./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb6bcc62184a60bbcb9e0528a455aeb84b21f101 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:58:17,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:58:17,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:58:17,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:58:17,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:58:17,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:58:17,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:58:17,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:58:17,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:58:17,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:58:17,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:58:17,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:58:17,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:58:17,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:58:17,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:58:17,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:58:17,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:58:17,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:58:17,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:58:17,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:58:17,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:58:17,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:58:17,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:58:17,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:58:17,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:58:17,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:58:17,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:58:17,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:58:18,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:58:18,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:58:18,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:58:18,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:58:18,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:58:18,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:58:18,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:58:18,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:58:18,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:58:18,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:58:18,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:58:18,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:58:18,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:58:18,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:58:18,032 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:58:18,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:58:18,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:58:18,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:58:18,034 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:58:18,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:58:18,035 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:58:18,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:58:18,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:58:18,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:58:18,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:58:18,036 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:58:18,037 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:58:18,037 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:58:18,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:58:18,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:58:18,037 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:58:18,038 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:58:18,038 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:58:18,038 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:58:18,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:58:18,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:58:18,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:58:18,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:58:18,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:58:18,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:58:18,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:58:18,040 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:58:18,040 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:58:18,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:58:18,040 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb6bcc62184a60bbcb9e0528a455aeb84b21f101 [2019-11-25 08:58:18,190 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:58:18,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:58:18,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:58:18,210 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:58:18,210 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:58:18,211 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2019-11-25 08:58:18,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/data/6f49ee6ba/9fad534850db452a8e7ec4f8eee27b74/FLAGbd44f1093 [2019-11-25 08:58:18,772 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:58:18,773 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2019-11-25 08:58:18,791 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/data/6f49ee6ba/9fad534850db452a8e7ec4f8eee27b74/FLAGbd44f1093 [2019-11-25 08:58:19,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/data/6f49ee6ba/9fad534850db452a8e7ec4f8eee27b74 [2019-11-25 08:58:19,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:58:19,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:58:19,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:58:19,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:58:19,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:58:19,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:58:19" (1/1) ... [2019-11-25 08:58:19,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3d0598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:19, skipping insertion in model container [2019-11-25 08:58:19,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:58:19" (1/1) ... [2019-11-25 08:58:19,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:58:19,377 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:58:19,738 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-25 08:58:19,739 INFO L968 CHandler]: at location: C: (struct ldv_msg*)ldv_malloc(sizeof(struct ldv_msg)) [576] [2019-11-25 08:58:19,739 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-25 08:58:19,750 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-25 08:58:19,750 INFO L968 CHandler]: at location: C: (typeof(*msg) *)( (char *)__mptr - ((size_t) &((typeof(*msg) *)0)->list) ) [607] [2019-11-25 08:58:19,750 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-25 08:58:19,752 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-25 08:58:19,753 INFO L968 CHandler]: at location: C: (typeof(*(msg)) *)( (char *)__mptr - ((size_t) &((typeof(*(msg)) *)0)->list) ) [607] [2019-11-25 08:58:19,753 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-25 08:58:19,755 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-25 08:58:19,755 INFO L968 CHandler]: at location: C: (typeof(*(n)) *)( (char *)__mptr - ((size_t) &((typeof(*(n)) *)0)->list) ) [607] [2019-11-25 08:58:19,756 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-25 08:58:19,777 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-25 08:58:19,777 INFO L968 CHandler]: at location: C: (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) ) [706] [2019-11-25 08:58:19,778 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-25 08:58:19,786 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-25 08:58:19,786 INFO L968 CHandler]: at location: C: (int *)ldv_malloc(sizeof(int)) [758] [2019-11-25 08:58:19,787 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-25 08:58:19,787 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-25 08:58:19,788 INFO L968 CHandler]: at location: C: (int *)ldv_malloc(sizeof(int)) [760] [2019-11-25 08:58:19,788 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-25 08:58:19,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:58:19,809 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-25 08:58:19,826 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:58:19,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:58:19,914 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:58:19,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:58:20,036 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:58:20,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:20 WrapperNode [2019-11-25 08:58:20,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:58:20,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:58:20,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:58:20,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:58:20,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:20" (1/1) ... [2019-11-25 08:58:20,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:20" (1/1) ... [2019-11-25 08:58:20,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:20" (1/1) ... [2019-11-25 08:58:20,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:20" (1/1) ... [2019-11-25 08:58:20,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:20" (1/1) ... [2019-11-25 08:58:20,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:20" (1/1) ... [2019-11-25 08:58:20,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:20" (1/1) ... [2019-11-25 08:58:20,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:58:20,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:58:20,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:58:20,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:58:20,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:58:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:58:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:58:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-25 08:58:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:58:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-25 08:58:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-25 08:58:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-25 08:58:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-25 08:58:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-25 08:58:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-25 08:58:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-25 08:58:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-25 08:58:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-25 08:58:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-25 08:58:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-25 08:58:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-25 08:58:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-25 08:58:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-25 08:58:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-25 08:58:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-25 08:58:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-25 08:58:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-25 08:58:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-25 08:58:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-25 08:58:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-25 08:58:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-25 08:58:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-25 08:58:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-25 08:58:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-25 08:58:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-25 08:58:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-25 08:58:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-25 08:58:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-25 08:58:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-25 08:58:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-25 08:58:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-25 08:58:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-25 08:58:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-25 08:58:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-25 08:58:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-25 08:58:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-25 08:58:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-25 08:58:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-25 08:58:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:58:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-25 08:58:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-25 08:58:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-25 08:58:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:58:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:58:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:58:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:58:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:58:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:58:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:58:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:58:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:58:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:58:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:58:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:58:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:58:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:58:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:58:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:58:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-25 08:58:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-25 08:58:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-25 08:58:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-25 08:58:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-25 08:58:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:58:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:58:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:58:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:58:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:58:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:58:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:58:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:58:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:58:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:58:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:58:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:58:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:58:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:58:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:58:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:58:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:58:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:58:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:58:20,213 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:58:20,213 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:58:20,213 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:58:20,213 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:58:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:58:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:58:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:58:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:58:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:58:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:58:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:58:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:58:20,215 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:58:20,215 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:58:20,215 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:58:20,216 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:58:20,216 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:58:20,216 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:58:20,217 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:58:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:58:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:58:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:58:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:58:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:58:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:58:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:58:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:58:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:58:20,223 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:58:20,223 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:58:20,223 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:58:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:58:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:58:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:58:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:58:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:58:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:58:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:58:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:58:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:58:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:58:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:58:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:58:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:58:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:58:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:58:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:58:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:58:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:58:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:58:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:58:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:58:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:58:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-25 08:58:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-25 08:58:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-25 08:58:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-25 08:58:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-25 08:58:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-25 08:58:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-25 08:58:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:58:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-25 08:58:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-25 08:58:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-25 08:58:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:58:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-25 08:58:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-25 08:58:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-25 08:58:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:58:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-25 08:58:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-25 08:58:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-25 08:58:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-25 08:58:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-25 08:58:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-25 08:58:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:58:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-25 08:58:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-25 08:58:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-25 08:58:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-25 08:58:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-25 08:58:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:58:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:58:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-25 08:58:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-25 08:58:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-25 08:58:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-25 08:58:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-25 08:58:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-25 08:58:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-25 08:58:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-25 08:58:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-25 08:58:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-25 08:58:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-25 08:58:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-25 08:58:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-25 08:58:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-25 08:58:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-25 08:58:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-25 08:58:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-25 08:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-25 08:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-25 08:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-25 08:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-25 08:58:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-25 08:58:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-25 08:58:20,918 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-25 08:58:21,298 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-25 08:58:21,609 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:58:21,609 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-25 08:58:21,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:21 BoogieIcfgContainer [2019-11-25 08:58:21,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:58:21,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:58:21,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:58:21,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:58:21,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:58:19" (1/3) ... [2019-11-25 08:58:21,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e3d28e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:58:21, skipping insertion in model container [2019-11-25 08:58:21,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:20" (2/3) ... [2019-11-25 08:58:21,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e3d28e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:58:21, skipping insertion in model container [2019-11-25 08:58:21,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:21" (3/3) ... [2019-11-25 08:58:21,617 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test4-1.i [2019-11-25 08:58:21,626 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:58:21,633 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 74 error locations. [2019-11-25 08:58:21,643 INFO L249 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2019-11-25 08:58:21,669 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:58:21,669 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:58:21,670 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:58:21,670 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:58:21,670 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:58:21,670 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:58:21,670 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:58:21,671 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:58:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2019-11-25 08:58:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:58:21,707 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:21,708 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:21,709 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:21,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:21,714 INFO L82 PathProgramCache]: Analyzing trace with hash 927863930, now seen corresponding path program 1 times [2019-11-25 08:58:21,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:21,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [816656778] [2019-11-25 08:58:21,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:21,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:58:21,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:22,038 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:22,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [816656778] [2019-11-25 08:58:22,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:22,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-25 08:58:22,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156337745] [2019-11-25 08:58:22,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:58:22,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:22,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:58:22,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:22,174 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 5 states. [2019-11-25 08:58:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:22,222 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-25 08:58:22,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:58:22,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-25 08:58:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:22,240 INFO L225 Difference]: With dead ends: 42 [2019-11-25 08:58:22,241 INFO L226 Difference]: Without dead ends: 39 [2019-11-25 08:58:22,243 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 [2019-11-25 08:58:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-25 08:58:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2019-11-25 08:58:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:58:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-11-25 08:58:22,310 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 16 [2019-11-25 08:58:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:22,311 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-11-25 08:58:22,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:58:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-11-25 08:58:22,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:58:22,313 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:22,314 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:22,525 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:22,526 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:22,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:22,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1624293031, now seen corresponding path program 1 times [2019-11-25 08:58:22,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:22,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1264933724] [2019-11-25 08:58:22,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:22,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:58:22,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:22,820 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:22,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1264933724] [2019-11-25 08:58:22,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:22,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:58:22,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581749275] [2019-11-25 08:58:22,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:58:22,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:22,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:58:22,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:58:22,872 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 3 states. [2019-11-25 08:58:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:22,923 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-25 08:58:22,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:58:22,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-25 08:58:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:22,925 INFO L225 Difference]: With dead ends: 40 [2019-11-25 08:58:22,925 INFO L226 Difference]: Without dead ends: 37 [2019-11-25 08:58:22,926 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:58:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-25 08:58:22,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2019-11-25 08:58:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-25 08:58:22,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-11-25 08:58:22,931 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 16 [2019-11-25 08:58:22,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:22,931 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-11-25 08:58:22,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:58:22,931 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-11-25 08:58:22,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-25 08:58:22,932 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:22,932 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:23,132 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:23,133 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:23,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:23,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1911181477, now seen corresponding path program 1 times [2019-11-25 08:58:23,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:23,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [434753678] [2019-11-25 08:58:23,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:23,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:58:23,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:58:23,388 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:58:23,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [434753678] [2019-11-25 08:58:23,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:23,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-25 08:58:23,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365886681] [2019-11-25 08:58:23,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:58:23,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:23,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:58:23,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:23,428 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 5 states. [2019-11-25 08:58:23,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:23,441 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-11-25 08:58:23,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:58:23,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-25 08:58:23,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:23,443 INFO L225 Difference]: With dead ends: 24 [2019-11-25 08:58:23,443 INFO L226 Difference]: Without dead ends: 24 [2019-11-25 08:58:23,444 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:23,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-25 08:58:23,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-25 08:58:23,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-25 08:58:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-11-25 08:58:23,447 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2019-11-25 08:58:23,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:23,448 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-11-25 08:58:23,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:58:23,448 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-11-25 08:58:23,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-25 08:58:23,449 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:23,449 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:23,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:23,650 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:23,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:23,650 INFO L82 PathProgramCache]: Analyzing trace with hash 882916751, now seen corresponding path program 1 times [2019-11-25 08:58:23,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:23,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1420167584] [2019-11-25 08:58:23,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:23,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:58:23,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:58:23,970 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:58:24,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1420167584] [2019-11-25 08:58:24,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:24,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2019-11-25 08:58:24,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390391500] [2019-11-25 08:58:24,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:58:24,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:24,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:58:24,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:58:24,070 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 9 states. [2019-11-25 08:58:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:24,227 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-11-25 08:58:24,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:58:24,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2019-11-25 08:58:24,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:24,229 INFO L225 Difference]: With dead ends: 23 [2019-11-25 08:58:24,229 INFO L226 Difference]: Without dead ends: 23 [2019-11-25 08:58:24,229 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:58:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-25 08:58:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-25 08:58:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-25 08:58:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-11-25 08:58:24,233 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2019-11-25 08:58:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:24,233 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-11-25 08:58:24,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:58:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-11-25 08:58:24,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:58:24,234 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:24,234 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:24,435 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:24,435 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:24,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:24,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1600615901, now seen corresponding path program 1 times [2019-11-25 08:58:24,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:24,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [406906023] [2019-11-25 08:58:24,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:24,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:58:24,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:24,736 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 [2019-11-25 08:58:24,737 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:58:24,740 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:58:24,741 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:58:24,741 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:58:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:58:24,770 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:58:24,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [406906023] [2019-11-25 08:58:24,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:24,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-25 08:58:24,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455781780] [2019-11-25 08:58:24,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:58:24,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:24,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:58:24,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:24,819 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2019-11-25 08:58:24,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:24,879 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-11-25 08:58:24,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:58:24,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-25 08:58:24,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:24,881 INFO L225 Difference]: With dead ends: 29 [2019-11-25 08:58:24,881 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 08:58:24,881 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 08:58:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-25 08:58:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:58:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-25 08:58:24,885 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2019-11-25 08:58:24,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:24,886 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-25 08:58:24,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:58:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-25 08:58:24,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:58:24,886 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:24,887 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:25,087 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:25,088 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:25,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1806847714, now seen corresponding path program 1 times [2019-11-25 08:58:25,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:25,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1923374174] [2019-11-25 08:58:25,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:25,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:58:25,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:58:25,293 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:58:25,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1923374174] [2019-11-25 08:58:25,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:25,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-25 08:58:25,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120816426] [2019-11-25 08:58:25,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:58:25,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:25,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:58:25,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:25,320 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2019-11-25 08:58:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:25,345 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-11-25 08:58:25,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:58:25,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-25 08:58:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:25,347 INFO L225 Difference]: With dead ends: 30 [2019-11-25 08:58:25,347 INFO L226 Difference]: Without dead ends: 30 [2019-11-25 08:58:25,347 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:25,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-25 08:58:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2019-11-25 08:58:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-25 08:58:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-11-25 08:58:25,351 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 22 [2019-11-25 08:58:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:25,352 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-11-25 08:58:25,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:58:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-11-25 08:58:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:58:25,353 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:25,353 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:25,560 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:25,561 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:25,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:25,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1221784944, now seen corresponding path program 1 times [2019-11-25 08:58:25,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:25,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1464821729] [2019-11-25 08:58:25,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4c8478f-86c4-4a7a-ad48-c30c69ef963c/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:58:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:58:25,934 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:58:25,935 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:58:26,135 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:26,146 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-25 08:58:26,150 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2019-11-25 08:58:26,151 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2019-11-25 08:58:26,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:58:26 BoogieIcfgContainer [2019-11-25 08:58:26,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:58:26,159 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:58:26,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:58:26,159 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:58:26,160 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:21" (3/4) ... [2019-11-25 08:58:26,163 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:58:26,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:58:26,165 INFO L168 Benchmark]: Toolchain (without parser) took 6880.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.5 MB). Free memory was 940.7 MB in the beginning and 1.2 GB in the end (delta: -231.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:26,165 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:26,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 751.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:26,166 INFO L168 Benchmark]: Boogie Preprocessor took 88.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:26,167 INFO L168 Benchmark]: RCFGBuilder took 1485.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 978.8 MB in the end (delta: 114.7 MB). Peak memory consumption was 114.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:26,167 INFO L168 Benchmark]: TraceAbstraction took 4547.19 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 978.8 MB in the beginning and 1.2 GB in the end (delta: -193.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:26,167 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:26,170 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 751.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 88.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1485.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 978.8 MB in the end (delta: 114.7 MB). Peak memory consumption was 114.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4547.19 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 978.8 MB in the beginning and 1.2 GB in the end (delta: -193.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 4.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 764]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 764. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [\old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, ldv_global_msg_list={562757590:0}] [L765] CALL entry_point() VAL [ldv_global_msg_list={562757590:0}] [L758] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={562757590:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [\old(size)=4, \result={15313:0}, ldv_global_msg_list={562757590:0}, malloc(size)={15313:0}, size=4] [L758] RET, EXPR ldv_malloc(sizeof(int)) VAL [ldv_global_msg_list={562757590:0}, ldv_malloc(sizeof(int))={15313:0}] [L758] int *p = (int *)ldv_malloc(sizeof(int)); [L759] COND TRUE \read(*p) VAL [ldv_global_msg_list={562757590:0}, p={15313:0}] [L760] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={562757590:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [\old(size)=4, \result={562756566:0}, ldv_global_msg_list={562757590:0}, malloc(size)={562756566:0}, size=4] [L760] RET, EXPR ldv_malloc(sizeof(int)) VAL [ldv_global_msg_list={562757590:0}, ldv_malloc(sizeof(int))={562756566:0}, p={15313:0}] [L760] int *q = (int *)ldv_malloc(sizeof(int)); [L761] free(q) VAL [ldv_global_msg_list={562757590:0}, p={15313:0}, q={562756566:0}] [L761] free(q) VAL [ldv_global_msg_list={562757590:0}, p={15313:0}, q={562756566:0}] [L761] free(q) [L765] RET entry_point() VAL [ldv_global_msg_list={562757590:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 47 procedures, 338 locations, 74 error locations. Result: UNSAFE, OverallTime: 4.4s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 158 SDtfs, 35 SDslu, 332 SDs, 0 SdLazy, 153 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 30 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 8634 SizeOfPredicates, 5 NumberOfNonLiveVariables, 471 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 32/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...