./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.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_test17_1-2.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 4e7f10697bf40be831ee927139b8f7b8ae344247 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-34ebb1e [2019-11-21 15:43:00,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 15:43:00,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 15:43:00,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 15:43:00,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 15:43:00,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 15:43:00,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 15:43:00,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 15:43:00,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 15:43:00,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 15:43:00,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 15:43:00,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 15:43:00,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 15:43:00,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 15:43:00,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 15:43:00,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 15:43:00,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 15:43:00,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 15:43:00,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 15:43:00,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 15:43:00,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 15:43:00,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 15:43:00,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 15:43:00,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 15:43:00,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 15:43:00,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 15:43:00,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 15:43:00,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 15:43:00,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 15:43:00,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 15:43:00,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 15:43:00,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 15:43:00,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 15:43:00,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 15:43:00,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 15:43:00,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 15:43:00,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 15:43:00,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 15:43:00,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 15:43:00,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 15:43:00,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 15:43:00,775 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2019-11-21 15:43:00,810 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 15:43:00,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 15:43:00,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 15:43:00,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 15:43:00,818 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 15:43:00,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 15:43:00,819 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 15:43:00,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 15:43:00,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 15:43:00,820 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 15:43:00,821 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 15:43:00,821 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-21 15:43:00,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 15:43:00,822 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 15:43:00,822 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 15:43:00,822 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 15:43:00,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 15:43:00,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 15:43:00,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 15:43:00,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 15:43:00,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 15:43:00,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 15:43:00,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 15:43:00,825 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 15:43:00,825 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 15:43:00,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 15:43:00,826 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 -> 4e7f10697bf40be831ee927139b8f7b8ae344247 [2019-11-21 15:43:01,158 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 15:43:01,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 15:43:01,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 15:43:01,185 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 15:43:01,185 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 15:43:01,186 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2019-11-21 15:43:01,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12533b3d0/26e5aaefa9394552989db84e85e7eaff/FLAGf4c0c9d3c [2019-11-21 15:43:01,850 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 15:43:01,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2019-11-21 15:43:01,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12533b3d0/26e5aaefa9394552989db84e85e7eaff/FLAGf4c0c9d3c [2019-11-21 15:43:02,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12533b3d0/26e5aaefa9394552989db84e85e7eaff [2019-11-21 15:43:02,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 15:43:02,120 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 15:43:02,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 15:43:02,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 15:43:02,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 15:43:02,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 03:43:02" (1/1) ... [2019-11-21 15:43:02,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307b14bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:43:02, skipping insertion in model container [2019-11-21 15:43:02,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 03:43:02" (1/1) ... [2019-11-21 15:43:02,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 15:43:02,206 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 15:43:02,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 15:43:02,845 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 15:43:02,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 15:43:02,989 INFO L205 MainTranslator]: Completed translation [2019-11-21 15:43:02,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:43:02 WrapperNode [2019-11-21 15:43:02,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 15:43:02,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 15:43:02,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 15:43:02,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 15:43:03,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:43:02" (1/1) ... [2019-11-21 15:43:03,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:43:02" (1/1) ... [2019-11-21 15:43:03,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:43:02" (1/1) ... [2019-11-21 15:43:03,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:43:02" (1/1) ... [2019-11-21 15:43:03,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:43:02" (1/1) ... [2019-11-21 15:43:03,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:43:02" (1/1) ... [2019-11-21 15:43:03,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:43:02" (1/1) ... [2019-11-21 15:43:03,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 15:43:03,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 15:43:03,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 15:43:03,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 15:43:03,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:43:02" (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 15:43:03,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 15:43:03,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 15:43:03,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-21 15:43:03,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 15:43:03,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 15:43:03,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-21 15:43:03,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-21 15:43:03,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-21 15:43:03,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-21 15:43:03,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-21 15:43:03,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-21 15:43:03,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-21 15:43:03,197 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-21 15:43:03,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-21 15:43:03,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-21 15:43:03,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-21 15:43:03,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-21 15:43:03,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-21 15:43:03,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-21 15:43:03,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-21 15:43:03,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-21 15:43:03,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-21 15:43:03,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-21 15:43:03,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-21 15:43:03,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-21 15:43:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-21 15:43:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-21 15:43:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-21 15:43:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-21 15:43:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-21 15:43:03,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-21 15:43:03,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-21 15:43:03,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-21 15:43:03,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-21 15:43:03,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-21 15:43:03,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-21 15:43:03,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-21 15:43:03,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-21 15:43:03,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-21 15:43:03,204 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-21 15:43:03,204 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-21 15:43:03,204 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_17 [2019-11-21 15:43:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2019-11-21 15:43:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-21 15:43:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 15:43:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-21 15:43:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-21 15:43:03,206 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-21 15:43:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 15:43:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 15:43:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 15:43:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 15:43:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 15:43:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 15:43:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 15:43:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 15:43:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 15:43:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 15:43:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 15:43:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 15:43:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 15:43:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 15:43:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 15:43:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 15:43:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 15:43:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 15:43:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-21 15:43:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-21 15:43:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-21 15:43:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 15:43:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 15:43:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 15:43:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 15:43:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 15:43:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 15:43:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 15:43:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 15:43:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 15:43:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 15:43:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 15:43:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 15:43:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 15:43:03,214 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 15:43:03,214 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 15:43:03,214 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 15:43:03,214 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 15:43:03,214 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 15:43:03,215 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 15:43:03,215 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 15:43:03,215 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 15:43:03,215 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 15:43:03,215 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 15:43:03,216 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 15:43:03,216 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 15:43:03,216 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 15:43:03,216 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 15:43:03,216 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 15:43:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 15:43:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 15:43:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 15:43:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 15:43:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 15:43:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 15:43:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 15:43:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 15:43:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 15:43:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 15:43:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 15:43:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 15:43:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 15:43:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 15:43:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 15:43:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 15:43:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 15:43:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 15:43:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 15:43:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 15:43:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 15:43:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 15:43:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 15:43:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 15:43:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 15:43:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 15:43:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 15:43:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 15:43:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 15:43:03,223 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 15:43:03,223 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 15:43:03,223 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 15:43:03,223 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 15:43:03,223 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 15:43:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 15:43:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 15:43:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 15:43:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 15:43:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 15:43:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 15:43:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 15:43:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 15:43:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 15:43:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 15:43:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 15:43:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 15:43:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 15:43:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 15:43:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 15:43:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 15:43:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 15:43:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 15:43:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 15:43:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 15:43:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 15:43:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 15:43:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 15:43:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 15:43:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-21 15:43:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-21 15:43:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-21 15:43:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-21 15:43:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-21 15:43:03,231 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-21 15:43:03,231 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-21 15:43:03,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-21 15:43:03,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 15:43:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-21 15:43:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-21 15:43:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-21 15:43:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-21 15:43:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-21 15:43:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-21 15:43:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-21 15:43:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-21 15:43:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-21 15:43:03,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-21 15:43:03,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-21 15:43:03,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-21 15:43:03,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-21 15:43:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-21 15:43:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 15:43:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-21 15:43:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-21 15:43:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-21 15:43:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-21 15:43:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-21 15:43:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-21 15:43:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-21 15:43:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-21 15:43:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-21 15:43:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-21 15:43:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-21 15:43:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-21 15:43:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-21 15:43:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-21 15:43:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-21 15:43:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-21 15:43:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-21 15:43:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-21 15:43:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-21 15:43:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-21 15:43:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-21 15:43:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-21 15:43:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-21 15:43:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-21 15:43:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_17 [2019-11-21 15:43:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2019-11-21 15:43:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-21 15:43:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 15:43:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 15:43:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-21 15:43:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-21 15:43:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 15:43:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-21 15:43:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-21 15:43:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-21 15:43:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-21 15:43:03,850 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-21 15:43:04,256 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-21 15:43:04,916 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 15:43:04,918 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-21 15:43:04,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 03:43:04 BoogieIcfgContainer [2019-11-21 15:43:04,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 15:43:04,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 15:43:04,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 15:43:04,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 15:43:04,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 03:43:02" (1/3) ... [2019-11-21 15:43:04,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c21a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 03:43:04, skipping insertion in model container [2019-11-21 15:43:04,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:43:02" (2/3) ... [2019-11-21 15:43:04,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c21a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 03:43:04, skipping insertion in model container [2019-11-21 15:43:04,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 03:43:04" (3/3) ... [2019-11-21 15:43:04,934 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-2.i [2019-11-21 15:43:04,946 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 15:43:04,957 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 90 error locations. [2019-11-21 15:43:04,969 INFO L249 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2019-11-21 15:43:04,993 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 15:43:04,993 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 15:43:04,993 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 15:43:04,994 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 15:43:04,994 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 15:43:04,994 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 15:43:04,994 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 15:43:04,995 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 15:43:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2019-11-21 15:43:05,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-21 15:43:05,026 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:05,027 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:43:05,028 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:05,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:05,035 INFO L82 PathProgramCache]: Analyzing trace with hash 658326159, now seen corresponding path program 1 times [2019-11-21 15:43:05,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:05,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1771009161] [2019-11-21 15:43:05,048 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 15:43:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:43:05,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 15:43:05,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:05,451 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 15:43:05,451 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:43:05,464 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:43:05,465 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:43:05,465 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 15:43:05,506 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 15:43:05,506 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:05,562 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 15:43:05,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1771009161] [2019-11-21 15:43:05,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:43:05,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 15:43:05,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816483348] [2019-11-21 15:43:05,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 15:43:05,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:43:05,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 15:43:05,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 15:43:05,590 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 5 states. [2019-11-21 15:43:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:43:05,914 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2019-11-21 15:43:05,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 15:43:05,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-21 15:43:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:43:05,940 INFO L225 Difference]: With dead ends: 87 [2019-11-21 15:43:05,940 INFO L226 Difference]: Without dead ends: 84 [2019-11-21 15:43:05,943 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 15:43:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-11-21 15:43:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2019-11-21 15:43:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-21 15:43:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2019-11-21 15:43:06,047 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 16 [2019-11-21 15:43:06,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:43:06,048 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2019-11-21 15:43:06,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 15:43:06,048 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2019-11-21 15:43:06,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-21 15:43:06,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:06,052 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:43:06,263 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:43:06,264 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:06,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:06,265 INFO L82 PathProgramCache]: Analyzing trace with hash 658326160, now seen corresponding path program 1 times [2019-11-21 15:43:06,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:06,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1215330649] [2019-11-21 15:43:06,266 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 15:43:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:43:06,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-21 15:43:06,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:06,603 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 15:43:06,604 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:43:06,613 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:43:06,614 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:43:06,614 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 15:43:06,698 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 15:43:06,698 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:07,522 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 15:43:07,523 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1215330649] [2019-11-21 15:43:07,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:43:07,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2019-11-21 15:43:07,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398324255] [2019-11-21 15:43:07,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-21 15:43:07,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:43:07,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-21 15:43:07,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-21 15:43:07,526 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 14 states. [2019-11-21 15:43:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:43:09,043 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2019-11-21 15:43:09,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-21 15:43:09,044 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2019-11-21 15:43:09,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:43:09,047 INFO L225 Difference]: With dead ends: 95 [2019-11-21 15:43:09,047 INFO L226 Difference]: Without dead ends: 95 [2019-11-21 15:43:09,048 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2019-11-21 15:43:09,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-21 15:43:09,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2019-11-21 15:43:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-21 15:43:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2019-11-21 15:43:09,060 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 16 [2019-11-21 15:43:09,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:43:09,061 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2019-11-21 15:43:09,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-21 15:43:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2019-11-21 15:43:09,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-21 15:43:09,062 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:09,062 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:43:09,264 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:43:09,265 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:09,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:09,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1545829840, now seen corresponding path program 1 times [2019-11-21 15:43:09,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:09,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [428659886] [2019-11-21 15:43:09,266 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 15:43:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:43:09,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 15:43:09,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:09,517 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 15:43:09,517 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 15:43:09,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [428659886] [2019-11-21 15:43:09,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:43:09,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 15:43:09,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165694439] [2019-11-21 15:43:09,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 15:43:09,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:43:09,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 15:43:09,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 15:43:09,553 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 5 states. [2019-11-21 15:43:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:43:09,606 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2019-11-21 15:43:09,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 15:43:09,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-21 15:43:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:43:09,608 INFO L225 Difference]: With dead ends: 84 [2019-11-21 15:43:09,608 INFO L226 Difference]: Without dead ends: 84 [2019-11-21 15:43:09,609 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 15:43:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-11-21 15:43:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2019-11-21 15:43:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-21 15:43:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2019-11-21 15:43:09,618 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 16 [2019-11-21 15:43:09,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:43:09,619 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2019-11-21 15:43:09,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 15:43:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2019-11-21 15:43:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 15:43:09,621 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:09,621 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 15:43:09,824 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:43:09,825 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:09,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1065898717, now seen corresponding path program 1 times [2019-11-21 15:43:09,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:09,827 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [733751058] [2019-11-21 15:43:09,827 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 15:43:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:43:10,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 15:43:10,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:10,062 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 15:43:10,062 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:10,136 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 15:43:10,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [733751058] [2019-11-21 15:43:10,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:43:10,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 15:43:10,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747966009] [2019-11-21 15:43:10,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 15:43:10,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:43:10,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 15:43:10,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 15:43:10,140 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2019-11-21 15:43:10,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:43:10,218 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2019-11-21 15:43:10,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 15:43:10,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-21 15:43:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:43:10,221 INFO L225 Difference]: With dead ends: 84 [2019-11-21 15:43:10,221 INFO L226 Difference]: Without dead ends: 84 [2019-11-21 15:43:10,221 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 15:43:10,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-11-21 15:43:10,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2019-11-21 15:43:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-21 15:43:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2019-11-21 15:43:10,238 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 17 [2019-11-21 15:43:10,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:43:10,239 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2019-11-21 15:43:10,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 15:43:10,239 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2019-11-21 15:43:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 15:43:10,241 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:10,241 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 15:43:10,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:43:10,444 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:10,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:10,445 INFO L82 PathProgramCache]: Analyzing trace with hash 676911618, now seen corresponding path program 1 times [2019-11-21 15:43:10,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:10,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1403301834] [2019-11-21 15:43:10,447 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 15:43:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:43:10,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-21 15:43:10,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:10,675 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 15:43:10,675 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:10,752 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 15:43:10,752 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1403301834] [2019-11-21 15:43:10,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:43:10,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-21 15:43:10,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628693077] [2019-11-21 15:43:10,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 15:43:10,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:43:10,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 15:43:10,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 15:43:10,755 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 3 states. [2019-11-21 15:43:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:43:10,904 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2019-11-21 15:43:10,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 15:43:10,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-21 15:43:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:43:10,906 INFO L225 Difference]: With dead ends: 120 [2019-11-21 15:43:10,906 INFO L226 Difference]: Without dead ends: 115 [2019-11-21 15:43:10,906 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 15:43:10,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-11-21 15:43:10,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80. [2019-11-21 15:43:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-21 15:43:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2019-11-21 15:43:10,915 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 17 [2019-11-21 15:43:10,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:43:10,916 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2019-11-21 15:43:10,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 15:43:10,916 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2019-11-21 15:43:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 15:43:10,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:10,917 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:43:11,119 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:43:11,121 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:11,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1457557360, now seen corresponding path program 1 times [2019-11-21 15:43:11,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:11,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1565081809] [2019-11-21 15:43:11,123 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 15:43:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:43:11,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-21 15:43:11,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:11,402 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 15:43:11,402 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:43:11,408 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:43:11,408 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:43:11,408 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 15:43:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 15:43:11,536 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:12,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 15:43:12,758 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-11-21 15:43:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 15:43:13,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1565081809] [2019-11-21 15:43:13,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 15:43:13,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2019-11-21 15:43:13,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164521335] [2019-11-21 15:43:13,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-21 15:43:13,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:43:13,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-21 15:43:13,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-21 15:43:13,169 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 19 states. [2019-11-21 15:43:14,812 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 15:43:15,192 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-11-21 15:43:16,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:43:16,075 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2019-11-21 15:43:16,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-21 15:43:16,076 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2019-11-21 15:43:16,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:43:16,077 INFO L225 Difference]: With dead ends: 97 [2019-11-21 15:43:16,077 INFO L226 Difference]: Without dead ends: 97 [2019-11-21 15:43:16,078 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2019-11-21 15:43:16,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-11-21 15:43:16,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2019-11-21 15:43:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-21 15:43:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2019-11-21 15:43:16,086 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 22 [2019-11-21 15:43:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:43:16,087 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2019-11-21 15:43:16,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-21 15:43:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2019-11-21 15:43:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-21 15:43:16,089 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:16,089 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:43:16,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:43:16,293 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:16,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:16,294 INFO L82 PathProgramCache]: Analyzing trace with hash 2122432263, now seen corresponding path program 1 times [2019-11-21 15:43:16,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:16,295 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1339546679] [2019-11-21 15:43:16,295 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 15:43:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:43:16,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-21 15:43:16,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 15:43:16,653 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 15:43:16,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1339546679] [2019-11-21 15:43:16,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 15:43:16,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-21 15:43:16,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623181503] [2019-11-21 15:43:16,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-21 15:43:16,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:43:16,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-21 15:43:16,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-21 15:43:16,827 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 12 states. [2019-11-21 15:43:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:43:17,245 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2019-11-21 15:43:17,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-21 15:43:17,247 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2019-11-21 15:43:17,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:43:17,248 INFO L225 Difference]: With dead ends: 98 [2019-11-21 15:43:17,248 INFO L226 Difference]: Without dead ends: 98 [2019-11-21 15:43:17,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2019-11-21 15:43:17,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-21 15:43:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2019-11-21 15:43:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-21 15:43:17,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2019-11-21 15:43:17,266 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 35 [2019-11-21 15:43:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:43:17,267 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2019-11-21 15:43:17,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-21 15:43:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2019-11-21 15:43:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-21 15:43:17,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:17,269 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:43:17,470 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:43:17,471 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:17,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:17,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1647594640, now seen corresponding path program 2 times [2019-11-21 15:43:17,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:17,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [127370111] [2019-11-21 15:43:17,473 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 15:43:17,818 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-21 15:43:17,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 15:43:17,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-21 15:43:17,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:17,856 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 15:43:17,856 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:43:17,862 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:43:17,862 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:43:17,862 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 15:43:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 15:43:18,120 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:19,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 15:43:20,290 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-11-21 15:43:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 15:43:20,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [127370111] [2019-11-21 15:43:20,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 15:43:20,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2019-11-21 15:43:20,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110584843] [2019-11-21 15:43:20,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-21 15:43:20,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:43:20,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-21 15:43:20,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2019-11-21 15:43:20,778 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand 27 states. [2019-11-21 15:43:22,611 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2019-11-21 15:43:23,518 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 15:43:23,997 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-11-21 15:43:25,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:43:25,307 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2019-11-21 15:43:25,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-21 15:43:25,308 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 34 [2019-11-21 15:43:25,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:43:25,309 INFO L225 Difference]: With dead ends: 108 [2019-11-21 15:43:25,310 INFO L226 Difference]: Without dead ends: 108 [2019-11-21 15:43:25,311 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=302, Invalid=1420, Unknown=0, NotChecked=0, Total=1722 [2019-11-21 15:43:25,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-21 15:43:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2019-11-21 15:43:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-21 15:43:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2019-11-21 15:43:25,317 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 34 [2019-11-21 15:43:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:43:25,318 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2019-11-21 15:43:25,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-21 15:43:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2019-11-21 15:43:25,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-21 15:43:25,320 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:25,320 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:43:25,526 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:43:25,527 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:25,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:25,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1226889072, now seen corresponding path program 3 times [2019-11-21 15:43:25,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:25,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1614449859] [2019-11-21 15:43:25,529 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 15:43:26,075 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-11-21 15:43:26,076 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 15:43:26,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-21 15:43:26,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 15:43:26,502 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 15:43:28,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1614449859] [2019-11-21 15:43:28,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 15:43:28,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 38 [2019-11-21 15:43:28,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821662793] [2019-11-21 15:43:28,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-21 15:43:28,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:43:28,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-21 15:43:28,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1146, Unknown=0, NotChecked=0, Total=1406 [2019-11-21 15:43:28,666 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 38 states. [2019-11-21 15:43:30,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:43:30,227 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2019-11-21 15:43:30,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-21 15:43:30,228 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 46 [2019-11-21 15:43:30,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:43:30,229 INFO L225 Difference]: With dead ends: 101 [2019-11-21 15:43:30,229 INFO L226 Difference]: Without dead ends: 101 [2019-11-21 15:43:30,230 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=285, Invalid=1197, Unknown=0, NotChecked=0, Total=1482 [2019-11-21 15:43:30,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-21 15:43:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2019-11-21 15:43:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-21 15:43:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2019-11-21 15:43:30,235 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 46 [2019-11-21 15:43:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:43:30,236 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2019-11-21 15:43:30,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-21 15:43:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2019-11-21 15:43:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-21 15:43:30,238 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:30,238 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:43:30,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:43:30,443 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:30,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2119706825, now seen corresponding path program 2 times [2019-11-21 15:43:30,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:30,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [646091461] [2019-11-21 15:43:30,446 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 15:43:30,708 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-21 15:43:30,708 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 15:43:30,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 15:43:30,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-21 15:43:30,742 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-21 15:43:30,818 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [646091461] [2019-11-21 15:43:30,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:43:30,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-21 15:43:30,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203243121] [2019-11-21 15:43:30,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-21 15:43:30,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:43:30,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-21 15:43:30,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-21 15:43:30,820 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand 7 states. [2019-11-21 15:43:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:43:30,922 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2019-11-21 15:43:30,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 15:43:30,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-11-21 15:43:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:43:30,926 INFO L225 Difference]: With dead ends: 132 [2019-11-21 15:43:30,926 INFO L226 Difference]: Without dead ends: 129 [2019-11-21 15:43:30,927 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-21 15:43:30,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-11-21 15:43:30,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 102. [2019-11-21 15:43:30,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-21 15:43:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2019-11-21 15:43:30,932 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 56 [2019-11-21 15:43:30,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:43:30,933 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2019-11-21 15:43:30,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-21 15:43:30,933 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2019-11-21 15:43:30,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-21 15:43:30,935 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:30,935 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:43:31,138 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:43:31,139 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:31,140 INFO L82 PathProgramCache]: Analyzing trace with hash -852929006, now seen corresponding path program 1 times [2019-11-21 15:43:31,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:31,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [634248157] [2019-11-21 15:43:31,142 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 15:43:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:43:31,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-21 15:43:31,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:31,618 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 15:43:31,618 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:43:31,619 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:43:31,620 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:43:31,620 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 15:43:31,707 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:43:31,707 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-11-21 15:43:31,708 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:43:31,727 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-21 15:43:31,728 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 15:43:31,728 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2019-11-21 15:43:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-21 15:43:31,782 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-11-21 15:43:36,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [634248157] [2019-11-21 15:43:36,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-21 15:43:36,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-11-21 15:43:36,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001982346] [2019-11-21 15:43:36,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 15:43:36,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:43:36,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 15:43:36,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=173, Unknown=1, NotChecked=0, Total=210 [2019-11-21 15:43:36,172 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand 8 states. [2019-11-21 15:43:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:43:56,257 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2019-11-21 15:43:56,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-21 15:43:56,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2019-11-21 15:43:56,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:43:56,261 INFO L225 Difference]: With dead ends: 159 [2019-11-21 15:43:56,261 INFO L226 Difference]: Without dead ends: 159 [2019-11-21 15:43:56,262 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=83, Invalid=377, Unknown=2, NotChecked=0, Total=462 [2019-11-21 15:43:56,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-11-21 15:43:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 108. [2019-11-21 15:43:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-21 15:43:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2019-11-21 15:43:56,268 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 56 [2019-11-21 15:43:56,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:43:56,269 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2019-11-21 15:43:56,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 15:43:56,269 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2019-11-21 15:43:56,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-21 15:43:56,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:43:56,271 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:43:56,475 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:43:56,476 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:43:56,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:43:56,477 INFO L82 PathProgramCache]: Analyzing trace with hash -852929005, now seen corresponding path program 1 times [2019-11-21 15:43:56,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:43:56,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1335541695] [2019-11-21 15:43:56,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:43:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:43:57,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-21 15:43:57,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:43:57,141 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 15:43:57,142 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:43:57,152 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:43:57,157 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 15:43:57,157 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 15:43:57,168 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:43:57,168 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:43:57,169 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-21 15:43:59,443 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 15:43:59,445 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2019-11-21 15:43:59,446 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:43:59,462 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:43:59,475 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:43:59,476 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-21 15:43:59,476 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 15:43:59,492 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:43:59,493 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:43:59,493 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:12 [2019-11-21 15:43:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-21 15:43:59,539 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:43:59,747 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 15:44:02,026 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-11-21 15:44:02,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 15:44:02,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 15:44:02,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 15:44:02,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 15:44:02,032 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 15:44:02,032 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 15:44:02,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 15:44:02,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 15:44:07,156 WARN L192 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2019-11-21 15:44:07,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 15:44:14,332 INFO L392 ElimStorePlain]: Different costs {1=[|v_#valid_256|], 2=[|v_#length_214|]} [2019-11-21 15:44:14,343 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-21 15:44:14,343 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:44:14,353 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:44:14,355 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-21 15:44:14,356 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 15:44:14,365 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:44:14,366 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:44:14,366 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:23, output treesize:5 [2019-11-21 15:44:15,037 INFO L392 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2019-11-21 15:44:15,054 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-21 15:44:15,054 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:44:15,072 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:44:15,075 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-21 15:44:15,076 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 15:44:15,093 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:44:15,094 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 15:44:15,094 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:33, output treesize:16 [2019-11-21 15:44:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-21 15:44:15,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1335541695] [2019-11-21 15:44:15,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 15:44:15,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2019-11-21 15:44:15,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228492948] [2019-11-21 15:44:15,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-21 15:44:15,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:44:15,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-21 15:44:15,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=407, Unknown=2, NotChecked=0, Total=462 [2019-11-21 15:44:15,280 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 22 states. [2019-11-21 15:44:33,497 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 15:44:35,889 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-11-21 15:44:48,321 WARN L192 SmtUtils]: Spent 8.20 s on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2019-11-21 15:45:09,362 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 16 [2019-11-21 15:45:15,081 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2019-11-21 15:45:23,147 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-11-21 15:45:32,993 WARN L192 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-11-21 15:45:39,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:39,078 INFO L93 Difference]: Finished difference Result 280 states and 321 transitions. [2019-11-21 15:45:39,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-21 15:45:39,080 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2019-11-21 15:45:39,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:39,085 INFO L225 Difference]: With dead ends: 280 [2019-11-21 15:45:39,086 INFO L226 Difference]: Without dead ends: 280 [2019-11-21 15:45:39,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 47.9s TimeCoverageRelationStatistics Valid=212, Invalid=1345, Unknown=3, NotChecked=0, Total=1560 [2019-11-21 15:45:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2019-11-21 15:45:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 149. [2019-11-21 15:45:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-11-21 15:45:39,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 182 transitions. [2019-11-21 15:45:39,097 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 182 transitions. Word has length 56 [2019-11-21 15:45:39,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:39,097 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 182 transitions. [2019-11-21 15:45:39,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-21 15:45:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 182 transitions. [2019-11-21 15:45:39,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-21 15:45:39,099 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:39,099 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:45:39,304 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:39,305 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:45:39,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:39,306 INFO L82 PathProgramCache]: Analyzing trace with hash 673934239, now seen corresponding path program 1 times [2019-11-21 15:45:39,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:39,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [938094593] [2019-11-21 15:45:39,307 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 15:45:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:39,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 15:45:39,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-21 15:45:39,613 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-21 15:45:39,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [938094593] [2019-11-21 15:45:39,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:39,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 15:45:39,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414070347] [2019-11-21 15:45:39,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 15:45:39,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:39,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 15:45:39,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 15:45:39,651 INFO L87 Difference]: Start difference. First operand 149 states and 182 transitions. Second operand 5 states. [2019-11-21 15:45:39,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:39,716 INFO L93 Difference]: Finished difference Result 162 states and 195 transitions. [2019-11-21 15:45:39,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 15:45:39,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2019-11-21 15:45:39,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:39,719 INFO L225 Difference]: With dead ends: 162 [2019-11-21 15:45:39,719 INFO L226 Difference]: Without dead ends: 162 [2019-11-21 15:45:39,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-21 15:45:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-11-21 15:45:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 151. [2019-11-21 15:45:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-11-21 15:45:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 182 transitions. [2019-11-21 15:45:39,728 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 182 transitions. Word has length 58 [2019-11-21 15:45:39,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:39,728 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 182 transitions. [2019-11-21 15:45:39,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 15:45:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 182 transitions. [2019-11-21 15:45:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-21 15:45:39,729 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:39,729 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:45:39,932 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:39,933 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:45:39,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:39,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1878222722, now seen corresponding path program 1 times [2019-11-21 15:45:39,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:39,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1281773152] [2019-11-21 15:45:39,934 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 15:45:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:40,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-21 15:45:40,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-11-21 15:45:40,370 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-11-21 15:45:40,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1281773152] [2019-11-21 15:45:40,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:40,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-21 15:45:40,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236609820] [2019-11-21 15:45:40,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 15:45:40,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:40,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 15:45:40,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-21 15:45:40,415 INFO L87 Difference]: Start difference. First operand 151 states and 182 transitions. Second operand 6 states. [2019-11-21 15:45:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:40,531 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2019-11-21 15:45:40,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 15:45:40,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2019-11-21 15:45:40,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:40,534 INFO L225 Difference]: With dead ends: 160 [2019-11-21 15:45:40,534 INFO L226 Difference]: Without dead ends: 160 [2019-11-21 15:45:40,534 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-21 15:45:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-11-21 15:45:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 153. [2019-11-21 15:45:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-21 15:45:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 184 transitions. [2019-11-21 15:45:40,552 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 184 transitions. Word has length 58 [2019-11-21 15:45:40,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:40,553 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 184 transitions. [2019-11-21 15:45:40,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 15:45:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 184 transitions. [2019-11-21 15:45:40,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-21 15:45:40,554 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:40,556 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 15:45:40,771 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:40,771 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:45:40,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:40,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1249334386, now seen corresponding path program 1 times [2019-11-21 15:45:40,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:40,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [925673645] [2019-11-21 15:45:40,772 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 15:45:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:41,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-21 15:45:41,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:41,213 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 15:45:41,213 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:45:41,215 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:45:41,216 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:45:41,216 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 15:45:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-21 15:45:41,290 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:41,574 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:41,575 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-21 15:45:41,582 INFO L168 Benchmark]: Toolchain (without parser) took 159462.09 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 357.0 MB). Free memory was 956.3 MB in the beginning and 1.0 GB in the end (delta: -72.3 MB). Peak memory consumption was 284.7 MB. Max. memory is 11.5 GB. [2019-11-21 15:45:41,585 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 15:45:41,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 865.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -147.6 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-11-21 15:45:41,586 INFO L168 Benchmark]: Boogie Preprocessor took 146.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 15:45:41,587 INFO L168 Benchmark]: RCFGBuilder took 1782.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.3 MB in the end (delta: 122.2 MB). Peak memory consumption was 122.2 MB. Max. memory is 11.5 GB. [2019-11-21 15:45:41,587 INFO L168 Benchmark]: TraceAbstraction took 156657.42 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 206.6 MB). Free memory was 976.3 MB in the beginning and 1.0 GB in the end (delta: -52.3 MB). Peak memory consumption was 154.3 MB. Max. memory is 11.5 GB. [2019-11-21 15:45:41,594 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 865.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -147.6 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 146.88 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 1782.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.3 MB in the end (delta: 122.2 MB). Peak memory consumption was 122.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 156657.42 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 206.6 MB). Free memory was 976.3 MB in the beginning and 1.0 GB in the end (delta: -52.3 MB). Peak memory consumption was 154.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...