./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i --full-output --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 264dba86 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9181148b15e14afa3f85d7f56edfe966974a0845 --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-264dba8 [2019-11-21 11:36:33,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 11:36:33,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 11:36:33,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 11:36:33,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 11:36:33,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 11:36:33,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 11:36:33,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 11:36:33,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 11:36:33,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 11:36:33,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 11:36:33,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 11:36:33,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 11:36:33,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 11:36:33,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 11:36:33,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 11:36:33,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 11:36:33,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 11:36:33,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 11:36:33,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 11:36:33,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 11:36:33,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 11:36:33,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 11:36:33,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 11:36:33,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 11:36:33,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 11:36:33,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 11:36:33,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 11:36:33,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 11:36:33,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 11:36:33,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 11:36:33,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 11:36:33,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 11:36:33,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 11:36:33,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 11:36:33,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 11:36:33,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 11:36:33,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 11:36:33,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 11:36:33,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 11:36:33,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 11:36:33,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2019-11-21 11:36:33,170 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 11:36:33,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 11:36:33,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 11:36:33,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 11:36:33,177 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 11:36:33,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 11:36:33,178 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 11:36:33,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 11:36:33,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 11:36:33,180 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 11:36:33,180 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 11:36:33,181 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-21 11:36:33,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 11:36:33,181 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 11:36:33,182 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 11:36:33,182 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 11:36:33,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 11:36:33,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 11:36:33,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 11:36:33,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 11:36:33,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 11:36:33,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 11:36:33,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 11:36:33,185 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 11:36:33,185 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 11:36:33,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 11:36:33,186 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9181148b15e14afa3f85d7f56edfe966974a0845 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2019-11-21 11:36:33,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 11:36:33,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 11:36:33,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 11:36:33,525 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 11:36:33,526 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 11:36:33,527 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2019-11-21 11:36:33,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5ebd0bb/cb367e6769a44fc5aba4acb82054727e/FLAG01e4a28c0 [2019-11-21 11:36:34,103 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 11:36:34,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2019-11-21 11:36:34,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5ebd0bb/cb367e6769a44fc5aba4acb82054727e/FLAG01e4a28c0 [2019-11-21 11:36:34,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5ebd0bb/cb367e6769a44fc5aba4acb82054727e [2019-11-21 11:36:34,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 11:36:34,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 11:36:34,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 11:36:34,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 11:36:34,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 11:36:34,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:36:34" (1/1) ... [2019-11-21 11:36:34,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2ab40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:36:34, skipping insertion in model container [2019-11-21 11:36:34,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:36:34" (1/1) ... [2019-11-21 11:36:34,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 11:36:34,488 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 11:36:34,959 INFO L966 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 [2019-11-21 11:36:34,960 INFO L969 CHandler]: at location: C: (struct ldv_msg*)ldv_malloc(sizeof(struct ldv_msg)) [577] [2019-11-21 11:36:34,960 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:36:34,972 INFO L966 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 [2019-11-21 11:36:34,973 INFO L969 CHandler]: at location: C: (typeof(*msg) *)( (char *)__mptr - ((size_t) &((typeof(*msg) *)0)->list) ) [608] [2019-11-21 11:36:34,973 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:36:34,976 INFO L966 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 [2019-11-21 11:36:34,976 INFO L969 CHandler]: at location: C: (typeof(*(msg)) *)( (char *)__mptr - ((size_t) &((typeof(*(msg)) *)0)->list) ) [608] [2019-11-21 11:36:34,976 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:36:34,979 INFO L966 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 [2019-11-21 11:36:34,980 INFO L969 CHandler]: at location: C: (typeof(*(n)) *)( (char *)__mptr - ((size_t) &((typeof(*(n)) *)0)->list) ) [608] [2019-11-21 11:36:34,980 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:36:35,005 INFO L966 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 [2019-11-21 11:36:35,005 INFO L969 CHandler]: at location: C: (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) ) [707] [2019-11-21 11:36:35,006 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:36:35,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:36:35,041 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-21 11:36:35,053 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 11:36:35,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:36:35,109 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 11:36:35,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:36:35,320 INFO L205 MainTranslator]: Completed translation [2019-11-21 11:36:35,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:36:35 WrapperNode [2019-11-21 11:36:35,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 11:36:35,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 11:36:35,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 11:36:35,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 11:36:35,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:36:35" (1/1) ... [2019-11-21 11:36:35,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:36:35" (1/1) ... [2019-11-21 11:36:35,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:36:35" (1/1) ... [2019-11-21 11:36:35,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:36:35" (1/1) ... [2019-11-21 11:36:35,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:36:35" (1/1) ... [2019-11-21 11:36:35,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:36:35" (1/1) ... [2019-11-21 11:36:35,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:36:35" (1/1) ... [2019-11-21 11:36:35,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 11:36:35,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 11:36:35,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 11:36:35,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 11:36:35,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:36:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 11:36:35,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 11:36:35,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 11:36:35,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-21 11:36:35,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 11:36:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 11:36:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-21 11:36:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-21 11:36:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-21 11:36:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-21 11:36:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-21 11:36:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-21 11:36:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-21 11:36:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-21 11:36:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-21 11:36:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-21 11:36:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-21 11:36:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-21 11:36:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-21 11:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-21 11:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-21 11:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-21 11:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-21 11:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-21 11:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-21 11:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-21 11:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-21 11:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-21 11:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-21 11:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-21 11:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-21 11:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-21 11:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-21 11:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-21 11:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-21 11:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-21 11:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-21 11:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-21 11:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-21 11:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-21 11:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-21 11:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-21 11:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-21 11:36:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 11:36:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-21 11:36:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-21 11:36:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-21 11:36:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 11:36:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 11:36:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 11:36:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 11:36:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 11:36:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 11:36:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 11:36:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 11:36:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 11:36:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 11:36:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 11:36:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 11:36:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 11:36:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 11:36:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 11:36:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 11:36:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 11:36:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 11:36:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-21 11:36:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-21 11:36:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-21 11:36:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 11:36:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 11:36:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 11:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 11:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 11:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 11:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 11:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 11:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 11:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 11:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 11:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 11:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 11:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 11:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 11:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 11:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 11:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 11:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 11:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 11:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 11:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 11:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 11:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 11:36:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 11:36:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 11:36:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 11:36:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 11:36:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 11:36:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 11:36:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 11:36:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 11:36:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 11:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 11:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 11:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 11:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 11:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 11:36:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 11:36:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 11:36:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 11:36:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 11:36:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 11:36:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 11:36:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 11:36:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 11:36:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 11:36:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 11:36:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 11:36:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 11:36:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 11:36:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 11:36:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 11:36:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 11:36:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 11:36:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 11:36:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 11:36:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 11:36:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 11:36:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 11:36:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 11:36:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 11:36:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 11:36:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 11:36:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 11:36:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 11:36:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 11:36:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 11:36:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 11:36:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 11:36:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 11:36:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 11:36:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 11:36:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 11:36:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 11:36:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 11:36:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 11:36:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 11:36:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 11:36:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 11:36:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 11:36:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 11:36:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 11:36:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 11:36:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 11:36:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 11:36:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-21 11:36:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-21 11:36:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-21 11:36:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-21 11:36:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-21 11:36:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-21 11:36:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-21 11:36:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-21 11:36:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 11:36:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-21 11:36:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-21 11:36:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-21 11:36:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-21 11:36:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-21 11:36:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-21 11:36:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-21 11:36:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-21 11:36:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-21 11:36:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-21 11:36:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-21 11:36:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-21 11:36:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-21 11:36:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-21 11:36:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 11:36:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-21 11:36:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-21 11:36:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-21 11:36:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-21 11:36:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-21 11:36:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-21 11:36:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-21 11:36:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-21 11:36:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-21 11:36:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-21 11:36:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-21 11:36:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-21 11:36:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-21 11:36:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-21 11:36:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-21 11:36:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-21 11:36:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-21 11:36:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-21 11:36:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-21 11:36:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-21 11:36:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-21 11:36:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-21 11:36:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-21 11:36:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-21 11:36:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-21 11:36:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 11:36:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 11:36:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-21 11:36:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-21 11:36:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 11:36:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-21 11:36:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-21 11:36:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-21 11:36:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-21 11:36:36,176 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-21 11:36:36,551 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-21 11:36:36,887 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 11:36:36,887 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-21 11:36:36,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:36:36 BoogieIcfgContainer [2019-11-21 11:36:36,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 11:36:36,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 11:36:36,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 11:36:36,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 11:36:36,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 11:36:34" (1/3) ... [2019-11-21 11:36:36,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd06ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 11:36:36, skipping insertion in model container [2019-11-21 11:36:36,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:36:35" (2/3) ... [2019-11-21 11:36:36,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd06ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 11:36:36, skipping insertion in model container [2019-11-21 11:36:36,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:36:36" (3/3) ... [2019-11-21 11:36:36,898 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1-1.i [2019-11-21 11:36:36,908 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 11:36:36,916 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2019-11-21 11:36:36,925 INFO L249 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2019-11-21 11:36:36,943 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 11:36:36,943 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 11:36:36,943 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 11:36:36,943 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 11:36:36,944 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 11:36:36,944 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 11:36:36,944 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 11:36:36,944 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 11:36:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2019-11-21 11:36:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 11:36:36,975 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:36,976 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:36,977 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:36,983 INFO L82 PathProgramCache]: Analyzing trace with hash 437307378, now seen corresponding path program 1 times [2019-11-21 11:36:36,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:36,996 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [665157932] [2019-11-21 11:36:36,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:36:37,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 11:36:37,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:37,391 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:36:37,392 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:36:37,403 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:36:37,404 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:36:37,404 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 11:36:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:37,433 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:37,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [665157932] [2019-11-21 11:36:37,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:36:37,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 11:36:37,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889864479] [2019-11-21 11:36:37,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 11:36:37,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:37,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 11:36:37,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:36:37,516 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 5 states. [2019-11-21 11:36:37,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:37,889 INFO L93 Difference]: Finished difference Result 156 states and 167 transitions. [2019-11-21 11:36:37,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 11:36:37,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-21 11:36:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:37,932 INFO L225 Difference]: With dead ends: 156 [2019-11-21 11:36:37,933 INFO L226 Difference]: Without dead ends: 153 [2019-11-21 11:36:37,935 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:36:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-11-21 11:36:38,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2019-11-21 11:36:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-21 11:36:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2019-11-21 11:36:38,017 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 17 [2019-11-21 11:36:38,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:38,018 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2019-11-21 11:36:38,018 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 11:36:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2019-11-21 11:36:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 11:36:38,019 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:38,020 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:38,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:38,229 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:38,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:38,230 INFO L82 PathProgramCache]: Analyzing trace with hash 437307379, now seen corresponding path program 1 times [2019-11-21 11:36:38,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:38,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1583554722] [2019-11-21 11:36:38,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:36:38,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-21 11:36:38,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:38,546 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:36:38,547 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:36:38,553 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:36:38,553 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:36:38,553 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 11:36:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:38,601 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:38,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1583554722] [2019-11-21 11:36:38,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:36:38,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-21 11:36:38,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716261269] [2019-11-21 11:36:38,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-21 11:36:38,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:38,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-21 11:36:38,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-21 11:36:38,927 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand 10 states. [2019-11-21 11:36:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:39,634 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2019-11-21 11:36:39,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 11:36:39,636 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-21 11:36:39,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:39,639 INFO L225 Difference]: With dead ends: 152 [2019-11-21 11:36:39,639 INFO L226 Difference]: Without dead ends: 152 [2019-11-21 11:36:39,639 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-21 11:36:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-21 11:36:39,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2019-11-21 11:36:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-21 11:36:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2019-11-21 11:36:39,652 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 17 [2019-11-21 11:36:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:39,653 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2019-11-21 11:36:39,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-21 11:36:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2019-11-21 11:36:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 11:36:39,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:39,654 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:39,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:39,857 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:39,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:39,858 INFO L82 PathProgramCache]: Analyzing trace with hash 465936529, now seen corresponding path program 1 times [2019-11-21 11:36:39,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:39,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [270556317] [2019-11-21 11:36:39,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:36:40,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 11:36:40,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:40,127 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:40,161 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [270556317] [2019-11-21 11:36:40,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:36:40,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 11:36:40,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599750757] [2019-11-21 11:36:40,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 11:36:40,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:40,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 11:36:40,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:36:40,163 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 5 states. [2019-11-21 11:36:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:40,190 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2019-11-21 11:36:40,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 11:36:40,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-21 11:36:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:40,193 INFO L225 Difference]: With dead ends: 146 [2019-11-21 11:36:40,193 INFO L226 Difference]: Without dead ends: 146 [2019-11-21 11:36:40,193 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:36:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-21 11:36:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2019-11-21 11:36:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-21 11:36:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2019-11-21 11:36:40,204 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 17 [2019-11-21 11:36:40,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:40,204 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2019-11-21 11:36:40,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 11:36:40,204 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2019-11-21 11:36:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-21 11:36:40,205 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:40,205 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:40,412 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:40,413 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:40,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1350751080, now seen corresponding path program 1 times [2019-11-21 11:36:40,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:40,416 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1034843300] [2019-11-21 11:36:40,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:36:40,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 11:36:40,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:40,679 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:40,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1034843300] [2019-11-21 11:36:40,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:36:40,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 11:36:40,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844719683] [2019-11-21 11:36:40,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 11:36:40,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:40,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 11:36:40,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:36:40,778 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand 5 states. [2019-11-21 11:36:40,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:40,806 INFO L93 Difference]: Finished difference Result 146 states and 153 transitions. [2019-11-21 11:36:40,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 11:36:40,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-11-21 11:36:40,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:40,809 INFO L225 Difference]: With dead ends: 146 [2019-11-21 11:36:40,809 INFO L226 Difference]: Without dead ends: 146 [2019-11-21 11:36:40,810 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:36:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-21 11:36:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2019-11-21 11:36:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-21 11:36:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 151 transitions. [2019-11-21 11:36:40,821 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 151 transitions. Word has length 27 [2019-11-21 11:36:40,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:40,821 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 151 transitions. [2019-11-21 11:36:40,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 11:36:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 151 transitions. [2019-11-21 11:36:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-21 11:36:40,823 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:40,823 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:41,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:41,032 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:41,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:41,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1861285257, now seen corresponding path program 1 times [2019-11-21 11:36:41,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:41,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1110584843] [2019-11-21 11:36:41,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:36:41,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-21 11:36:41,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:41,404 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:41,465 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1110584843] [2019-11-21 11:36:41,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:36:41,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-21 11:36:41,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39405489] [2019-11-21 11:36:41,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-21 11:36:41,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:41,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-21 11:36:41,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-21 11:36:41,468 INFO L87 Difference]: Start difference. First operand 144 states and 151 transitions. Second operand 7 states. [2019-11-21 11:36:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:41,537 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2019-11-21 11:36:41,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-21 11:36:41,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-11-21 11:36:41,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:41,542 INFO L225 Difference]: With dead ends: 160 [2019-11-21 11:36:41,542 INFO L226 Difference]: Without dead ends: 160 [2019-11-21 11:36:41,543 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-21 11:36:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-11-21 11:36:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 153. [2019-11-21 11:36:41,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-21 11:36:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 160 transitions. [2019-11-21 11:36:41,564 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 160 transitions. Word has length 27 [2019-11-21 11:36:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:41,564 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 160 transitions. [2019-11-21 11:36:41,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-21 11:36:41,564 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 160 transitions. [2019-11-21 11:36:41,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-21 11:36:41,565 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:41,565 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:41,766 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:41,767 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:41,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:41,768 INFO L82 PathProgramCache]: Analyzing trace with hash -371919445, now seen corresponding path program 1 times [2019-11-21 11:36:41,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:41,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1712810902] [2019-11-21 11:36:41,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:36:42,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-21 11:36:42,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:42,067 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:42,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1712810902] [2019-11-21 11:36:42,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:36:42,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-21 11:36:42,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604218459] [2019-11-21 11:36:42,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 11:36:42,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:42,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 11:36:42,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-21 11:36:42,119 INFO L87 Difference]: Start difference. First operand 153 states and 160 transitions. Second operand 6 states. [2019-11-21 11:36:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:42,189 INFO L93 Difference]: Finished difference Result 159 states and 166 transitions. [2019-11-21 11:36:42,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 11:36:42,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-21 11:36:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:42,193 INFO L225 Difference]: With dead ends: 159 [2019-11-21 11:36:42,193 INFO L226 Difference]: Without dead ends: 155 [2019-11-21 11:36:42,193 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-21 11:36:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-11-21 11:36:42,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2019-11-21 11:36:42,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-11-21 11:36:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 162 transitions. [2019-11-21 11:36:42,220 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 162 transitions. Word has length 32 [2019-11-21 11:36:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:42,220 INFO L462 AbstractCegarLoop]: Abstraction has 155 states and 162 transitions. [2019-11-21 11:36:42,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 11:36:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 162 transitions. [2019-11-21 11:36:42,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-21 11:36:42,225 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:42,225 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:42,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:42,429 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:42,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:42,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2114850165, now seen corresponding path program 1 times [2019-11-21 11:36:42,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:42,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1425837855] [2019-11-21 11:36:42,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:36:42,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 11:36:42,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:42,760 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:42,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1425837855] [2019-11-21 11:36:42,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 11:36:42,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-21 11:36:42,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884473385] [2019-11-21 11:36:42,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-21 11:36:42,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:42,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-21 11:36:42,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-21 11:36:42,889 INFO L87 Difference]: Start difference. First operand 155 states and 162 transitions. Second operand 10 states. [2019-11-21 11:36:43,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:43,100 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2019-11-21 11:36:43,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-21 11:36:43,101 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2019-11-21 11:36:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:43,102 INFO L225 Difference]: With dead ends: 163 [2019-11-21 11:36:43,103 INFO L226 Difference]: Without dead ends: 159 [2019-11-21 11:36:43,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2019-11-21 11:36:43,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-11-21 11:36:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2019-11-21 11:36:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-11-21 11:36:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 166 transitions. [2019-11-21 11:36:43,111 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 166 transitions. Word has length 34 [2019-11-21 11:36:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:43,111 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 166 transitions. [2019-11-21 11:36:43,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-21 11:36:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 166 transitions. [2019-11-21 11:36:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-21 11:36:43,113 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:43,113 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:43,316 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:43,317 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:43,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:43,318 INFO L82 PathProgramCache]: Analyzing trace with hash 349418536, now seen corresponding path program 1 times [2019-11-21 11:36:43,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:43,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1577752361] [2019-11-21 11:36:43,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:36:43,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-21 11:36:43,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:43,720 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:43,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1577752361] [2019-11-21 11:36:43,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:36:43,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-21 11:36:43,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858546031] [2019-11-21 11:36:43,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-21 11:36:43,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:43,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-21 11:36:43,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-21 11:36:43,804 INFO L87 Difference]: Start difference. First operand 159 states and 166 transitions. Second operand 7 states. [2019-11-21 11:36:43,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:43,868 INFO L93 Difference]: Finished difference Result 169 states and 176 transitions. [2019-11-21 11:36:43,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-21 11:36:43,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-11-21 11:36:43,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:43,870 INFO L225 Difference]: With dead ends: 169 [2019-11-21 11:36:43,871 INFO L226 Difference]: Without dead ends: 169 [2019-11-21 11:36:43,872 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-21 11:36:43,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-11-21 11:36:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2019-11-21 11:36:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-11-21 11:36:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 172 transitions. [2019-11-21 11:36:43,883 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 172 transitions. Word has length 36 [2019-11-21 11:36:43,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:43,884 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 172 transitions. [2019-11-21 11:36:43,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-21 11:36:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 172 transitions. [2019-11-21 11:36:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-21 11:36:43,889 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:43,889 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:44,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:44,105 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:44,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1191975232, now seen corresponding path program 1 times [2019-11-21 11:36:44,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:44,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [865358621] [2019-11-21 11:36:44,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:36:44,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-21 11:36:44,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:44,348 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:44,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [865358621] [2019-11-21 11:36:44,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:36:44,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-21 11:36:44,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635184654] [2019-11-21 11:36:44,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 11:36:44,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:44,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 11:36:44,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 11:36:44,489 INFO L87 Difference]: Start difference. First operand 165 states and 172 transitions. Second operand 3 states. [2019-11-21 11:36:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:44,691 INFO L93 Difference]: Finished difference Result 176 states and 182 transitions. [2019-11-21 11:36:44,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 11:36:44,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-11-21 11:36:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:44,693 INFO L225 Difference]: With dead ends: 176 [2019-11-21 11:36:44,693 INFO L226 Difference]: Without dead ends: 154 [2019-11-21 11:36:44,694 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 11:36:44,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-21 11:36:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 146. [2019-11-21 11:36:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-21 11:36:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 152 transitions. [2019-11-21 11:36:44,699 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 152 transitions. Word has length 34 [2019-11-21 11:36:44,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:44,699 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 152 transitions. [2019-11-21 11:36:44,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 11:36:44,699 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 152 transitions. [2019-11-21 11:36:44,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-21 11:36:44,700 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:44,700 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:44,903 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:44,904 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:44,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:44,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1672035253, now seen corresponding path program 2 times [2019-11-21 11:36:44,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:44,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1303143488] [2019-11-21 11:36:44,905 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:45,177 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-21 11:36:45,177 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 11:36:45,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-21 11:36:45,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:45,189 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:36:45,190 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:36:45,191 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:36:45,191 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:36:45,192 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 11:36:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-21 11:36:45,338 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-21 11:36:45,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1303143488] [2019-11-21 11:36:45,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:36:45,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-21 11:36:45,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044972489] [2019-11-21 11:36:45,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-21 11:36:45,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:45,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-21 11:36:45,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-21 11:36:45,431 INFO L87 Difference]: Start difference. First operand 146 states and 152 transitions. Second operand 13 states. [2019-11-21 11:36:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:46,586 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2019-11-21 11:36:46,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 11:36:46,586 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2019-11-21 11:36:46,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:46,587 INFO L225 Difference]: With dead ends: 157 [2019-11-21 11:36:46,587 INFO L226 Difference]: Without dead ends: 157 [2019-11-21 11:36:46,588 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-21 11:36:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-11-21 11:36:46,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 145. [2019-11-21 11:36:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-11-21 11:36:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 151 transitions. [2019-11-21 11:36:46,595 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 151 transitions. Word has length 38 [2019-11-21 11:36:46,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:46,595 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 151 transitions. [2019-11-21 11:36:46,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-21 11:36:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 151 transitions. [2019-11-21 11:36:46,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-21 11:36:46,596 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:46,596 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:46,799 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:46,801 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:46,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:46,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1672035252, now seen corresponding path program 1 times [2019-11-21 11:36:46,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:46,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1332064867] [2019-11-21 11:36:46,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:36:47,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-21 11:36:47,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:47,208 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:47,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1332064867] [2019-11-21 11:36:47,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 11:36:47,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-21 11:36:47,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511241165] [2019-11-21 11:36:47,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-21 11:36:47,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:47,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-21 11:36:47,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2019-11-21 11:36:47,521 INFO L87 Difference]: Start difference. First operand 145 states and 151 transitions. Second operand 18 states. [2019-11-21 11:36:48,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:48,400 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2019-11-21 11:36:48,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-21 11:36:48,401 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2019-11-21 11:36:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:48,402 INFO L225 Difference]: With dead ends: 157 [2019-11-21 11:36:48,403 INFO L226 Difference]: Without dead ends: 153 [2019-11-21 11:36:48,403 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2019-11-21 11:36:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-11-21 11:36:48,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-11-21 11:36:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-21 11:36:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 159 transitions. [2019-11-21 11:36:48,409 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 159 transitions. Word has length 38 [2019-11-21 11:36:48,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:48,409 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 159 transitions. [2019-11-21 11:36:48,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-21 11:36:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 159 transitions. [2019-11-21 11:36:48,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-21 11:36:48,410 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:48,410 INFO L410 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:48,613 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:48,614 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:48,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:48,615 INFO L82 PathProgramCache]: Analyzing trace with hash -120338484, now seen corresponding path program 2 times [2019-11-21 11:36:48,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:48,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1802322140] [2019-11-21 11:36:48,617 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:48,925 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-21 11:36:48,925 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 11:36:48,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-21 11:36:48,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:48,945 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:36:48,947 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:36:48,952 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:36:48,953 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:36:48,953 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 11:36:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-21 11:36:49,208 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-21 11:36:50,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1802322140] [2019-11-21 11:36:50,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:36:50,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-21 11:36:50,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410496994] [2019-11-21 11:36:50,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-21 11:36:50,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:50,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-21 11:36:50,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-21 11:36:50,044 INFO L87 Difference]: Start difference. First operand 153 states and 159 transitions. Second operand 23 states. [2019-11-21 11:36:52,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:52,899 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2019-11-21 11:36:52,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 11:36:52,900 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2019-11-21 11:36:52,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:52,901 INFO L225 Difference]: With dead ends: 152 [2019-11-21 11:36:52,901 INFO L226 Difference]: Without dead ends: 152 [2019-11-21 11:36:52,902 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2019-11-21 11:36:52,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-21 11:36:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2019-11-21 11:36:52,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-21 11:36:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 158 transitions. [2019-11-21 11:36:52,908 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 158 transitions. Word has length 46 [2019-11-21 11:36:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:52,909 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 158 transitions. [2019-11-21 11:36:52,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-21 11:36:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 158 transitions. [2019-11-21 11:36:52,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-21 11:36:52,909 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:52,909 INFO L410 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:53,110 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:53,110 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:53,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2099111874, now seen corresponding path program 1 times [2019-11-21 11:36:53,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:53,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1446871793] [2019-11-21 11:36:53,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:36:53,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-21 11:36:53,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:53,656 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:53,778 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-11-21 11:36:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:36:54,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1446871793] [2019-11-21 11:36:54,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 11:36:54,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2019-11-21 11:36:54,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864262506] [2019-11-21 11:36:54,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-21 11:36:54,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:54,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-21 11:36:54,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2019-11-21 11:36:54,788 INFO L87 Difference]: Start difference. First operand 152 states and 158 transitions. Second operand 34 states. [2019-11-21 11:36:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:36:58,665 INFO L93 Difference]: Finished difference Result 170 states and 188 transitions. [2019-11-21 11:36:58,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-21 11:36:58,668 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 51 [2019-11-21 11:36:58,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:36:58,669 INFO L225 Difference]: With dead ends: 170 [2019-11-21 11:36:58,669 INFO L226 Difference]: Without dead ends: 166 [2019-11-21 11:36:58,670 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=736, Invalid=1426, Unknown=0, NotChecked=0, Total=2162 [2019-11-21 11:36:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-11-21 11:36:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2019-11-21 11:36:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-11-21 11:36:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 172 transitions. [2019-11-21 11:36:58,683 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 172 transitions. Word has length 51 [2019-11-21 11:36:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:36:58,683 INFO L462 AbstractCegarLoop]: Abstraction has 166 states and 172 transitions. [2019-11-21 11:36:58,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-21 11:36:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 172 transitions. [2019-11-21 11:36:58,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-21 11:36:58,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:36:58,685 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:36:58,888 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:58,889 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:36:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:36:58,890 INFO L82 PathProgramCache]: Analyzing trace with hash 490263070, now seen corresponding path program 2 times [2019-11-21 11:36:58,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:36:58,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1937569668] [2019-11-21 11:36:58,892 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:36:59,203 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-21 11:36:59,203 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 11:36:59,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-21 11:36:59,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:36:59,215 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:36:59,216 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:36:59,217 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:36:59,217 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:36:59,218 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 11:36:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:36:59,428 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:36:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:36:59,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1937569668] [2019-11-21 11:36:59,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:36:59,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-21 11:36:59,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007499209] [2019-11-21 11:36:59,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-21 11:36:59,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:36:59,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-21 11:36:59,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-21 11:36:59,518 INFO L87 Difference]: Start difference. First operand 166 states and 172 transitions. Second operand 13 states. [2019-11-21 11:37:00,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:00,479 INFO L93 Difference]: Finished difference Result 176 states and 181 transitions. [2019-11-21 11:37:00,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 11:37:00,479 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2019-11-21 11:37:00,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:00,481 INFO L225 Difference]: With dead ends: 176 [2019-11-21 11:37:00,481 INFO L226 Difference]: Without dead ends: 176 [2019-11-21 11:37:00,482 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-21 11:37:00,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-11-21 11:37:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 164. [2019-11-21 11:37:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2019-11-21 11:37:00,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 170 transitions. [2019-11-21 11:37:00,487 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 170 transitions. Word has length 65 [2019-11-21 11:37:00,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:00,488 INFO L462 AbstractCegarLoop]: Abstraction has 164 states and 170 transitions. [2019-11-21 11:37:00,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-21 11:37:00,488 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 170 transitions. [2019-11-21 11:37:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-21 11:37:00,488 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:00,489 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:00,692 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:00,692 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:00,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash 490263071, now seen corresponding path program 1 times [2019-11-21 11:37:00,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:00,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [668775880] [2019-11-21 11:37:00,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:01,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-21 11:37:01,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:01,304 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:37:01,304 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:37:01,310 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:37:01,311 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:37:01,311 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 11:37:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:01,553 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:02,366 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [668775880] [2019-11-21 11:37:02,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:02,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-21 11:37:02,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943085832] [2019-11-21 11:37:02,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-21 11:37:02,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:02,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-21 11:37:02,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-21 11:37:02,367 INFO L87 Difference]: Start difference. First operand 164 states and 170 transitions. Second operand 23 states. [2019-11-21 11:37:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:05,083 INFO L93 Difference]: Finished difference Result 162 states and 168 transitions. [2019-11-21 11:37:05,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 11:37:05,084 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2019-11-21 11:37:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:05,085 INFO L225 Difference]: With dead ends: 162 [2019-11-21 11:37:05,086 INFO L226 Difference]: Without dead ends: 162 [2019-11-21 11:37:05,086 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 104 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2019-11-21 11:37:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-11-21 11:37:05,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2019-11-21 11:37:05,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-11-21 11:37:05,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 168 transitions. [2019-11-21 11:37:05,093 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 168 transitions. Word has length 65 [2019-11-21 11:37:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:05,093 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 168 transitions. [2019-11-21 11:37:05,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-21 11:37:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 168 transitions. [2019-11-21 11:37:05,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-21 11:37:05,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:05,095 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:05,299 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:05,300 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:05,300 INFO L82 PathProgramCache]: Analyzing trace with hash 201237803, now seen corresponding path program 1 times [2019-11-21 11:37:05,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:05,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [986066195] [2019-11-21 11:37:05,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:05,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 11:37:05,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:05,651 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:05,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [986066195] [2019-11-21 11:37:05,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:05,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2019-11-21 11:37:05,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494606304] [2019-11-21 11:37:05,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 11:37:05,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:05,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 11:37:05,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-21 11:37:05,778 INFO L87 Difference]: Start difference. First operand 162 states and 168 transitions. Second operand 8 states. [2019-11-21 11:37:05,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:05,824 INFO L93 Difference]: Finished difference Result 164 states and 169 transitions. [2019-11-21 11:37:05,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 11:37:05,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2019-11-21 11:37:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:05,827 INFO L225 Difference]: With dead ends: 164 [2019-11-21 11:37:05,827 INFO L226 Difference]: Without dead ends: 162 [2019-11-21 11:37:05,827 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-21 11:37:05,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-11-21 11:37:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2019-11-21 11:37:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-11-21 11:37:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 167 transitions. [2019-11-21 11:37:05,833 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 167 transitions. Word has length 68 [2019-11-21 11:37:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:05,833 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 167 transitions. [2019-11-21 11:37:05,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 11:37:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 167 transitions. [2019-11-21 11:37:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-21 11:37:05,834 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:05,835 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:06,035 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:06,035 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:06,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:06,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1372781212, now seen corresponding path program 1 times [2019-11-21 11:37:06,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:06,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1191401740] [2019-11-21 11:37:06,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:06,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-21 11:37:06,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:06,426 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:06,427 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:06,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:37:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:06,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1191401740] [2019-11-21 11:37:06,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:06,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2019-11-21 11:37:06,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530843680] [2019-11-21 11:37:06,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 11:37:06,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:06,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 11:37:06,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-21 11:37:06,682 INFO L87 Difference]: Start difference. First operand 162 states and 167 transitions. Second operand 11 states. [2019-11-21 11:37:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:06,786 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2019-11-21 11:37:06,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 11:37:06,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2019-11-21 11:37:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:06,787 INFO L225 Difference]: With dead ends: 166 [2019-11-21 11:37:06,787 INFO L226 Difference]: Without dead ends: 162 [2019-11-21 11:37:06,788 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-21 11:37:06,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-11-21 11:37:06,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2019-11-21 11:37:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-11-21 11:37:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 166 transitions. [2019-11-21 11:37:06,792 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 166 transitions. Word has length 73 [2019-11-21 11:37:06,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:06,793 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 166 transitions. [2019-11-21 11:37:06,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 11:37:06,793 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 166 transitions. [2019-11-21 11:37:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-21 11:37:06,794 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:06,794 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:07,002 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:07,002 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:07,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:07,003 INFO L82 PathProgramCache]: Analyzing trace with hash -2061819663, now seen corresponding path program 1 times [2019-11-21 11:37:07,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:07,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [547643925] [2019-11-21 11:37:07,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:07,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-21 11:37:07,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:07,535 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:37:07,536 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:37:07,538 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:37:07,538 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:37:07,538 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 11:37:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:07,812 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:08,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [547643925] [2019-11-21 11:37:08,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:08,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 12] imperfect sequences [] total 17 [2019-11-21 11:37:08,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504434502] [2019-11-21 11:37:08,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-21 11:37:08,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:08,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-21 11:37:08,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2019-11-21 11:37:08,214 INFO L87 Difference]: Start difference. First operand 162 states and 166 transitions. Second operand 18 states. [2019-11-21 11:37:09,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:09,996 INFO L93 Difference]: Finished difference Result 172 states and 175 transitions. [2019-11-21 11:37:09,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-21 11:37:09,997 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 84 [2019-11-21 11:37:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:09,998 INFO L225 Difference]: With dead ends: 172 [2019-11-21 11:37:09,998 INFO L226 Difference]: Without dead ends: 172 [2019-11-21 11:37:09,999 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2019-11-21 11:37:10,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-11-21 11:37:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 160. [2019-11-21 11:37:10,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-11-21 11:37:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 164 transitions. [2019-11-21 11:37:10,009 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 164 transitions. Word has length 84 [2019-11-21 11:37:10,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:10,010 INFO L462 AbstractCegarLoop]: Abstraction has 160 states and 164 transitions. [2019-11-21 11:37:10,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-21 11:37:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 164 transitions. [2019-11-21 11:37:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-21 11:37:10,011 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:10,012 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:10,215 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:10,216 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:10,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:10,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2061819662, now seen corresponding path program 1 times [2019-11-21 11:37:10,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:10,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [505095809] [2019-11-21 11:37:10,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:10,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-21 11:37:10,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:10,893 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:37:10,894 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:37:10,900 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:37:10,901 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:37:10,901 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 11:37:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:11,287 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:12,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [505095809] [2019-11-21 11:37:12,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:12,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 14] imperfect sequences [] total 30 [2019-11-21 11:37:12,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131314084] [2019-11-21 11:37:12,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-21 11:37:12,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:12,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-21 11:37:12,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2019-11-21 11:37:12,908 INFO L87 Difference]: Start difference. First operand 160 states and 164 transitions. Second operand 31 states. [2019-11-21 11:37:16,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:16,249 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2019-11-21 11:37:16,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-21 11:37:16,250 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 84 [2019-11-21 11:37:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:16,251 INFO L225 Difference]: With dead ends: 158 [2019-11-21 11:37:16,251 INFO L226 Difference]: Without dead ends: 158 [2019-11-21 11:37:16,251 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 134 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2019-11-21 11:37:16,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2019-11-21 11:37:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2019-11-21 11:37:16,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2019-11-21 11:37:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 162 transitions. [2019-11-21 11:37:16,255 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 162 transitions. Word has length 84 [2019-11-21 11:37:16,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:16,256 INFO L462 AbstractCegarLoop]: Abstraction has 158 states and 162 transitions. [2019-11-21 11:37:16,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-21 11:37:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 162 transitions. [2019-11-21 11:37:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-21 11:37:16,257 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:16,257 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:16,463 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:16,463 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:16,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:16,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1459599634, now seen corresponding path program 1 times [2019-11-21 11:37:16,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:16,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1065988776] [2019-11-21 11:37:16,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:16,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-21 11:37:16,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:16,908 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:17,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1065988776] [2019-11-21 11:37:17,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:17,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2019-11-21 11:37:17,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929706156] [2019-11-21 11:37:17,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 11:37:17,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:17,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 11:37:17,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-21 11:37:17,107 INFO L87 Difference]: Start difference. First operand 158 states and 162 transitions. Second operand 11 states. [2019-11-21 11:37:17,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:17,252 INFO L93 Difference]: Finished difference Result 161 states and 164 transitions. [2019-11-21 11:37:17,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-21 11:37:17,253 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2019-11-21 11:37:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:17,255 INFO L225 Difference]: With dead ends: 161 [2019-11-21 11:37:17,255 INFO L226 Difference]: Without dead ends: 158 [2019-11-21 11:37:17,255 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-11-21 11:37:17,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2019-11-21 11:37:17,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2019-11-21 11:37:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2019-11-21 11:37:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 161 transitions. [2019-11-21 11:37:17,263 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 161 transitions. Word has length 93 [2019-11-21 11:37:17,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:17,263 INFO L462 AbstractCegarLoop]: Abstraction has 158 states and 161 transitions. [2019-11-21 11:37:17,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 11:37:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 161 transitions. [2019-11-21 11:37:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-21 11:37:17,265 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:17,265 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:17,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:17,470 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:17,473 INFO L82 PathProgramCache]: Analyzing trace with hash -684662951, now seen corresponding path program 1 times [2019-11-21 11:37:17,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:17,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1052507958] [2019-11-21 11:37:17,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:18,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 30 conjunts are in the unsatisfiable core [2019-11-21 11:37:18,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:18,139 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:37:18,140 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:37:18,142 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:37:18,142 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:37:18,142 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 11:37:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:18,502 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:18,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1052507958] [2019-11-21 11:37:18,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:18,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 14] imperfect sequences [] total 19 [2019-11-21 11:37:18,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68773109] [2019-11-21 11:37:18,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-21 11:37:18,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:18,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-21 11:37:18,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2019-11-21 11:37:18,888 INFO L87 Difference]: Start difference. First operand 158 states and 161 transitions. Second operand 20 states. [2019-11-21 11:37:20,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:20,562 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2019-11-21 11:37:20,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-21 11:37:20,563 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 106 [2019-11-21 11:37:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:20,564 INFO L225 Difference]: With dead ends: 172 [2019-11-21 11:37:20,564 INFO L226 Difference]: Without dead ends: 172 [2019-11-21 11:37:20,564 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 187 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2019-11-21 11:37:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-11-21 11:37:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 156. [2019-11-21 11:37:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-21 11:37:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 159 transitions. [2019-11-21 11:37:20,570 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 159 transitions. Word has length 106 [2019-11-21 11:37:20,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:20,571 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 159 transitions. [2019-11-21 11:37:20,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-21 11:37:20,571 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 159 transitions. [2019-11-21 11:37:20,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-21 11:37:20,572 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:20,572 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:20,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:20,777 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:20,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:20,778 INFO L82 PathProgramCache]: Analyzing trace with hash -684662950, now seen corresponding path program 1 times [2019-11-21 11:37:20,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:20,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [256487297] [2019-11-21 11:37:20,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:21,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-21 11:37:21,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:21,582 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:37:21,583 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:37:21,590 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:37:21,590 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:37:21,590 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 11:37:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:22,142 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:24,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [256487297] [2019-11-21 11:37:24,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:24,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 16] imperfect sequences [] total 34 [2019-11-21 11:37:24,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504441183] [2019-11-21 11:37:24,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-21 11:37:24,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:24,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-21 11:37:24,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2019-11-21 11:37:24,136 INFO L87 Difference]: Start difference. First operand 156 states and 159 transitions. Second operand 35 states. [2019-11-21 11:37:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:28,217 INFO L93 Difference]: Finished difference Result 154 states and 157 transitions. [2019-11-21 11:37:28,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-21 11:37:28,219 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 106 [2019-11-21 11:37:28,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:28,221 INFO L225 Difference]: With dead ends: 154 [2019-11-21 11:37:28,222 INFO L226 Difference]: Without dead ends: 154 [2019-11-21 11:37:28,223 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 172 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2019-11-21 11:37:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-21 11:37:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-11-21 11:37:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-21 11:37:28,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 157 transitions. [2019-11-21 11:37:28,229 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 157 transitions. Word has length 106 [2019-11-21 11:37:28,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:28,230 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 157 transitions. [2019-11-21 11:37:28,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-21 11:37:28,230 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 157 transitions. [2019-11-21 11:37:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-21 11:37:28,231 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:28,231 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:28,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:28,432 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:28,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:28,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1381247537, now seen corresponding path program 1 times [2019-11-21 11:37:28,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:28,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [550423805] [2019-11-21 11:37:28,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:28,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-21 11:37:28,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:28,966 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:29,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [550423805] [2019-11-21 11:37:29,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:29,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2019-11-21 11:37:29,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722707104] [2019-11-21 11:37:29,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 11:37:29,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:29,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 11:37:29,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-21 11:37:29,384 INFO L87 Difference]: Start difference. First operand 154 states and 157 transitions. Second operand 11 states. [2019-11-21 11:37:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:29,485 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2019-11-21 11:37:29,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-21 11:37:29,486 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2019-11-21 11:37:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:29,487 INFO L225 Difference]: With dead ends: 156 [2019-11-21 11:37:29,487 INFO L226 Difference]: Without dead ends: 154 [2019-11-21 11:37:29,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-11-21 11:37:29,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-21 11:37:29,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-11-21 11:37:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-21 11:37:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2019-11-21 11:37:29,492 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 104 [2019-11-21 11:37:29,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:29,492 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 156 transitions. [2019-11-21 11:37:29,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 11:37:29,493 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 156 transitions. [2019-11-21 11:37:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-21 11:37:29,493 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:29,494 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:29,698 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:29,698 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:29,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:29,699 INFO L82 PathProgramCache]: Analyzing trace with hash 624069493, now seen corresponding path program 1 times [2019-11-21 11:37:29,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:29,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2031348093] [2019-11-21 11:37:29,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:30,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 42 conjunts are in the unsatisfiable core [2019-11-21 11:37:30,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:30,387 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:37:30,388 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:37:30,391 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:37:30,391 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:37:30,391 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 11:37:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:31,029 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:31,530 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2031348093] [2019-11-21 11:37:31,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:31,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 18] imperfect sequences [] total 23 [2019-11-21 11:37:31,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215518279] [2019-11-21 11:37:31,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-21 11:37:31,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:31,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-21 11:37:31,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2019-11-21 11:37:31,532 INFO L87 Difference]: Start difference. First operand 154 states and 156 transitions. Second operand 24 states. [2019-11-21 11:37:33,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:33,598 INFO L93 Difference]: Finished difference Result 164 states and 165 transitions. [2019-11-21 11:37:33,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-21 11:37:33,605 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 119 [2019-11-21 11:37:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:33,606 INFO L225 Difference]: With dead ends: 164 [2019-11-21 11:37:33,606 INFO L226 Difference]: Without dead ends: 164 [2019-11-21 11:37:33,607 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 205 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-11-21 11:37:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-21 11:37:33,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 152. [2019-11-21 11:37:33,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-21 11:37:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions. [2019-11-21 11:37:33,613 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 119 [2019-11-21 11:37:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:33,613 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 154 transitions. [2019-11-21 11:37:33,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-21 11:37:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 154 transitions. [2019-11-21 11:37:33,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-21 11:37:33,615 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:33,615 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:33,820 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:33,821 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:33,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:33,822 INFO L82 PathProgramCache]: Analyzing trace with hash 624069494, now seen corresponding path program 1 times [2019-11-21 11:37:33,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:33,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1209350980] [2019-11-21 11:37:33,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:34,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 52 conjunts are in the unsatisfiable core [2019-11-21 11:37:34,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:34,710 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:37:34,710 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:37:34,717 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:37:34,717 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:37:34,718 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 11:37:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:35,854 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:38,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1209350980] [2019-11-21 11:37:38,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:38,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 20] imperfect sequences [] total 42 [2019-11-21 11:37:38,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022991010] [2019-11-21 11:37:38,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-11-21 11:37:38,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:38,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-11-21 11:37:38,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1685, Unknown=0, NotChecked=0, Total=1806 [2019-11-21 11:37:38,562 INFO L87 Difference]: Start difference. First operand 152 states and 154 transitions. Second operand 43 states. [2019-11-21 11:37:44,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:44,660 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2019-11-21 11:37:44,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-21 11:37:44,661 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 119 [2019-11-21 11:37:44,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:44,662 INFO L225 Difference]: With dead ends: 150 [2019-11-21 11:37:44,662 INFO L226 Difference]: Without dead ends: 150 [2019-11-21 11:37:44,663 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 188 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=176, Invalid=2374, Unknown=0, NotChecked=0, Total=2550 [2019-11-21 11:37:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-21 11:37:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-11-21 11:37:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-21 11:37:44,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2019-11-21 11:37:44,667 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 119 [2019-11-21 11:37:44,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:44,667 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2019-11-21 11:37:44,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-11-21 11:37:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2019-11-21 11:37:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-21 11:37:44,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:44,674 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:44,875 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:44,875 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:44,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:44,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1258913086, now seen corresponding path program 1 times [2019-11-21 11:37:44,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:44,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1024890539] [2019-11-21 11:37:44,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:45,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-21 11:37:45,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:46,359 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:47,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1024890539] [2019-11-21 11:37:47,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:37:47,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 19] imperfect sequences [] total 38 [2019-11-21 11:37:47,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081765874] [2019-11-21 11:37:47,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-11-21 11:37:47,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:47,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-11-21 11:37:47,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2019-11-21 11:37:47,120 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand 39 states. [2019-11-21 11:37:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:37:49,343 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2019-11-21 11:37:49,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-21 11:37:49,345 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 122 [2019-11-21 11:37:49,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:37:49,346 INFO L225 Difference]: With dead ends: 149 [2019-11-21 11:37:49,346 INFO L226 Difference]: Without dead ends: 149 [2019-11-21 11:37:49,347 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 202 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=160, Invalid=1910, Unknown=0, NotChecked=0, Total=2070 [2019-11-21 11:37:49,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-11-21 11:37:49,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2019-11-21 11:37:49,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-11-21 11:37:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2019-11-21 11:37:49,351 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 122 [2019-11-21 11:37:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:37:49,351 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2019-11-21 11:37:49,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-11-21 11:37:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2019-11-21 11:37:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-21 11:37:49,353 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:37:49,353 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:37:49,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:49,560 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:37:49,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:37:49,561 INFO L82 PathProgramCache]: Analyzing trace with hash -625005447, now seen corresponding path program 1 times [2019-11-21 11:37:49,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:37:49,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [320519653] [2019-11-21 11:37:49,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:37:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:37:50,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 72 conjunts are in the unsatisfiable core [2019-11-21 11:37:50,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:37:51,069 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 23 [2019-11-21 11:37:51,070 INFO L343 Elim1Store]: treesize reduction 548, result has 6.0 percent of original size [2019-11-21 11:37:51,070 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 18 case distinctions, treesize of input 183 treesize of output 113 [2019-11-21 11:37:51,072 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:37:51,110 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:37:51,111 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:37:51,111 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:183, output treesize:167 [2019-11-21 11:37:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2019-11-21 11:37:51,236 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:37:51,535 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-21 11:37:53,265 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-11-21 11:37:55,040 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-11-21 11:37:56,043 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-11-21 11:37:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:37:57,286 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [320519653] [2019-11-21 11:37:57,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-21 11:37:57,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2019-11-21 11:37:57,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804962038] [2019-11-21 11:37:57,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 11:37:57,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:37:57,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 11:37:57,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2019-11-21 11:37:57,287 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 11 states. [2019-11-21 11:38:07,673 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-11-21 11:38:13,324 WARN L192 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 116 [2019-11-21 11:38:16,627 WARN L192 SmtUtils]: Spent 862.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-11-21 11:38:20,359 WARN L192 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 94 [2019-11-21 11:38:23,906 WARN L192 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 106 [2019-11-21 11:38:27,468 WARN L192 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 93 [2019-11-21 11:38:30,189 WARN L192 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 97 [2019-11-21 11:38:35,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:38:35,013 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2019-11-21 11:38:35,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-21 11:38:35,016 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 125 [2019-11-21 11:38:35,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:38:35,017 INFO L225 Difference]: With dead ends: 124 [2019-11-21 11:38:35,017 INFO L226 Difference]: Without dead ends: 124 [2019-11-21 11:38:35,021 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 225 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=95, Invalid=897, Unknown=0, NotChecked=0, Total=992 [2019-11-21 11:38:35,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-11-21 11:38:35,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2019-11-21 11:38:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-11-21 11:38:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2019-11-21 11:38:35,027 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 125 [2019-11-21 11:38:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:38:35,027 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2019-11-21 11:38:35,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 11:38:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2019-11-21 11:38:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-21 11:38:35,028 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:38:35,029 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:38:35,234 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:38:35,235 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:38:35,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:38:35,235 INFO L82 PathProgramCache]: Analyzing trace with hash 377518402, now seen corresponding path program 1 times [2019-11-21 11:38:35,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:38:35,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1054617781] [2019-11-21 11:38:35,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 29 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:38:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:38:36,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 64 conjunts are in the unsatisfiable core [2019-11-21 11:38:36,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:38:36,827 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 23 [2019-11-21 11:38:36,827 INFO L343 Elim1Store]: treesize reduction 288, result has 10.8 percent of original size [2019-11-21 11:38:36,828 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 91 treesize of output 73 [2019-11-21 11:38:36,830 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:38:36,847 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:38:36,847 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:38:36,847 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:91, output treesize:83 [2019-11-21 11:38:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:38:36,941 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:38:37,565 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-11-21 11:38:40,504 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2019-11-21 11:38:41,429 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-11-21 11:38:42,670 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-21 11:38:44,455 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-11-21 11:38:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 11:38:45,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1054617781] [2019-11-21 11:38:45,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:38:45,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 9] imperfect sequences [] total 21 [2019-11-21 11:38:45,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593006780] [2019-11-21 11:38:45,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-21 11:38:45,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:38:45,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-21 11:38:45,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2019-11-21 11:38:45,070 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 21 states. [2019-11-21 11:38:47,271 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-21 11:38:48,594 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-21 11:38:49,776 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-21 11:38:59,787 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-11-21 11:39:01,771 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-11-21 11:39:02,881 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2019-11-21 11:39:04,683 WARN L192 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-21 11:39:06,126 WARN L192 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-11-21 11:39:08,818 WARN L192 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-11-21 11:39:09,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:39:09,617 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2019-11-21 11:39:09,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-21 11:39:09,621 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 123 [2019-11-21 11:39:09,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:39:09,621 INFO L225 Difference]: With dead ends: 89 [2019-11-21 11:39:09,621 INFO L226 Difference]: Without dead ends: 0 [2019-11-21 11:39:09,622 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2019-11-21 11:39:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-21 11:39:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-21 11:39:09,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-21 11:39:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-21 11:39:09,622 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 123 [2019-11-21 11:39:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:39:09,623 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-21 11:39:09,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-21 11:39:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-21 11:39:09,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-21 11:39:09,824 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:39:09,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 11:39:09 BoogieIcfgContainer [2019-11-21 11:39:09,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 11:39:09,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 11:39:09,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 11:39:09,832 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 11:39:09,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:36:36" (3/4) ... [2019-11-21 11:39:09,836 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-21 11:39:09,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_submit_msg [2019-11-21 11:39:09,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_create [2019-11-21 11:39:09,844 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_del [2019-11-21 11:39:09,844 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_positive [2019-11-21 11:39:09,844 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __ldv_list_del [2019-11-21 11:39:09,844 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-21 11:39:09,844 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-21 11:39:09,844 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_msg_free [2019-11-21 11:39:09,844 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-21 11:39:09,845 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_list_del [2019-11-21 11:39:09,845 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kref_get [2019-11-21 11:39:09,845 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_put [2019-11-21 11:39:09,845 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-21 11:39:09,845 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_init [2019-11-21 11:39:09,845 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ##fun~$Pointer$~TO~VOID [2019-11-21 11:39:09,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_atomic_sub_return [2019-11-21 11:39:09,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_list_add_tail [2019-11-21 11:39:09,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-21 11:39:09,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_nonpositive [2019-11-21 11:39:09,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.meminit [2019-11-21 11:39:09,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure entry_point [2019-11-21 11:39:09,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_msg_alloc [2019-11-21 11:39:09,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_init_internal [2019-11-21 11:39:09,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kref_init [2019-11-21 11:39:09,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_list_add [2019-11-21 11:39:09,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_destroy_msgs [2019-11-21 11:39:09,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_msg_fill [2019-11-21 11:39:09,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kref_sub [2019-11-21 11:39:09,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset [2019-11-21 11:39:09,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_atomic_add_return [2019-11-21 11:39:09,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2019-11-21 11:39:09,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_release [2019-11-21 11:39:09,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2019-11-21 11:39:09,849 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-21 11:39:09,849 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_cleanup [2019-11-21 11:39:09,849 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memcpy [2019-11-21 11:39:09,849 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure LDV_INIT_LIST_HEAD [2019-11-21 11:39:09,849 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __ldv_list_add [2019-11-21 11:39:09,849 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-21 11:39:09,849 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2019-11-21 11:39:09,850 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_dev_set_drvdata [2019-11-21 11:39:09,850 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_zalloc [2019-11-21 11:39:09,850 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kref_put [2019-11-21 11:39:09,850 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_get [2019-11-21 11:39:09,851 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_dev_get_drvdata [2019-11-21 11:39:09,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 55 nodes and edges [2019-11-21 11:39:09,865 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-11-21 11:39:09,866 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-21 11:39:09,867 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-21 11:39:09,867 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-21 11:39:09,942 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-21 11:39:09,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 11:39:09,948 INFO L168 Benchmark]: Toolchain (without parser) took 155521.71 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 469.2 MB). Free memory was 956.3 MB in the beginning and 1.2 GB in the end (delta: -211.3 MB). Peak memory consumption was 258.0 MB. Max. memory is 11.5 GB. [2019-11-21 11:39:09,948 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 11:39:09,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 894.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -139.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-21 11:39:09,949 INFO L168 Benchmark]: Boogie Preprocessor took 137.21 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-21 11:39:09,950 INFO L168 Benchmark]: RCFGBuilder took 1429.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 983.9 MB in the end (delta: 105.3 MB). Peak memory consumption was 105.3 MB. Max. memory is 11.5 GB. [2019-11-21 11:39:09,950 INFO L168 Benchmark]: TraceAbstraction took 152941.14 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 321.4 MB). Free memory was 983.9 MB in the beginning and 1.2 GB in the end (delta: -196.4 MB). Peak memory consumption was 125.0 MB. Max. memory is 11.5 GB. [2019-11-21 11:39:09,950 INFO L168 Benchmark]: Witness Printer took 114.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-11-21 11:39:09,956 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 894.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -139.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 137.21 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1429.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 983.9 MB in the end (delta: 105.3 MB). Peak memory consumption was 105.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 152941.14 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 321.4 MB). Free memory was 983.9 MB in the beginning and 1.2 GB in the end (delta: -196.4 MB). Peak memory consumption was 125.0 MB. Max. memory is 11.5 GB. * Witness Printer took 114.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 683]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 683]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 560]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 560]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 745]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 745]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 608]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 608]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 608]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 608]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 608]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 608]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 588]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 589]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 588]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 589]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 588]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 588]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 659]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 659]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 661]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 661]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 555]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 555]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 556]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 556]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 701]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 703]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 703]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 703]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 701]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 701]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 595]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 595]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 594]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 594]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 595]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 764]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 542]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 542]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 568]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 568]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 568]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 568]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 550]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 549]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 549]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 550]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 624]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 624]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 667]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 667]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 669]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 669]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 564]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 564]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 620]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 620]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 579]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 579]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 71 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 46 procedures, 327 locations, 71 error locations. Result: SAFE, OverallTime: 152.8s, OverallIterations: 28, TraceHistogramMax: 28, AutomataDifference: 98.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3303 SDtfs, 1629 SDslu, 27245 SDs, 0 SdLazy, 14887 SolverSat, 482 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3820 GetRequests, 3227 SyntacticMatches, 63 SemanticMatches, 530 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2431 ImplicationChecksByTransitivity, 59.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred 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: 0.2s AutomataMinimizationTime, 28 MinimizatonAttempts, 98 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 6.5s SatisfiabilityAnalysisTime, 35.2s InterpolantComputationTime, 1870 NumberOfCodeBlocks, 1822 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 3684 ConstructedInterpolants, 370 QuantifiedInterpolants, 1704989 SizeOfPredicates, 187 NumberOfNonLiveVariables, 7921 ConjunctsInSsa, 585 ConjunctsInUnsatCore, 56 InterpolantComputations, 49 PerfectInterpolantSequences, 12404/12690 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 proved your program to be correct! Received shutdown request...