./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.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_test17_2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a95368535a8c20a6128f13edcb77bbb1dbe40e6b --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-264dba8 [2019-11-21 11:02:00,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 11:02:00,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 11:02:00,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 11:02:00,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 11:02:00,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 11:02:00,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 11:02:00,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 11:02:00,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 11:02:00,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 11:02:00,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 11:02:00,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 11:02:00,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 11:02:00,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 11:02:00,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 11:02:00,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 11:02:00,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 11:02:00,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 11:02:00,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 11:02:00,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 11:02:00,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 11:02:00,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 11:02:00,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 11:02:00,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 11:02:00,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 11:02:00,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 11:02:00,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 11:02:00,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 11:02:00,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 11:02:00,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 11:02:00,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 11:02:00,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 11:02:00,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 11:02:00,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 11:02:00,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 11:02:00,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 11:02:00,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 11:02:00,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 11:02:00,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 11:02:00,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 11:02:00,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 11:02:00,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2019-11-21 11:02:00,500 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 11:02:00,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 11:02:00,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 11:02:00,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 11:02:00,509 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 11:02:00,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 11:02:00,510 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 11:02:00,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 11:02:00,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 11:02:00,511 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 11:02:00,511 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 11:02:00,511 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-21 11:02:00,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 11:02:00,514 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 11:02:00,514 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 11:02:00,515 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 11:02:00,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 11:02:00,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 11:02:00,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 11:02:00,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 11:02:00,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 11:02:00,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 11:02:00,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 11:02:00,518 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 11:02:00,518 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 11:02:00,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 11:02:00,519 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 -> a95368535a8c20a6128f13edcb77bbb1dbe40e6b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2019-11-21 11:02:00,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 11:02:00,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 11:02:00,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 11:02:00,898 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 11:02:00,898 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 11:02:00,899 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2019-11-21 11:02:00,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b92c37fb/7344d36f08364c0cb12692a7caaf4aa2/FLAG26afb73a1 [2019-11-21 11:02:01,545 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 11:02:01,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2019-11-21 11:02:01,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b92c37fb/7344d36f08364c0cb12692a7caaf4aa2/FLAG26afb73a1 [2019-11-21 11:02:01,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b92c37fb/7344d36f08364c0cb12692a7caaf4aa2 [2019-11-21 11:02:01,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 11:02:01,792 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 11:02:01,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 11:02:01,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 11:02:01,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 11:02:01,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:02:01" (1/1) ... [2019-11-21 11:02:01,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43474d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:02:01, skipping insertion in model container [2019-11-21 11:02:01,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:02:01" (1/1) ... [2019-11-21 11:02:01,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 11:02:01,851 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 11:02:02,303 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 11:02:02,303 INFO L969 CHandler]: at location: C: (struct ldv_msg*)ldv_malloc(sizeof(struct ldv_msg)) [577] [2019-11-21 11:02:02,304 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:02:02,317 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 11:02:02,318 INFO L969 CHandler]: at location: C: (typeof(*msg) *)( (char *)__mptr - ((size_t) &((typeof(*msg) *)0)->list) ) [608] [2019-11-21 11:02:02,318 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:02:02,322 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 11:02:02,323 INFO L969 CHandler]: at location: C: (typeof(*(msg)) *)( (char *)__mptr - ((size_t) &((typeof(*(msg)) *)0)->list) ) [608] [2019-11-21 11:02:02,323 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:02:02,327 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 11:02:02,328 INFO L969 CHandler]: at location: C: (typeof(*(n)) *)( (char *)__mptr - ((size_t) &((typeof(*(n)) *)0)->list) ) [608] [2019-11-21 11:02:02,328 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:02:02,358 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 11:02:02,358 INFO L969 CHandler]: at location: C: (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) ) [707] [2019-11-21 11:02:02,359 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:02:02,378 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 11:02:02,378 INFO L969 CHandler]: at location: C: (struct A17 *)ldv_malloc(sizeof(struct A17)) [766] [2019-11-21 11:02:02,379 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:02:02,391 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 11:02:02,392 INFO L969 CHandler]: at location: C: (struct A17 **)ldv_malloc(sizeof(struct A17*)*len) [785] [2019-11-21 11:02:02,393 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 11:02:02,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:02:02,427 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-21 11:02:02,453 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 11:02:02,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:02:02,568 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 11:02:02,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 11:02:02,752 INFO L205 MainTranslator]: Completed translation [2019-11-21 11:02:02,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:02:02 WrapperNode [2019-11-21 11:02:02,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 11:02:02,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 11:02:02,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 11:02:02,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 11:02:02,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:02:02" (1/1) ... [2019-11-21 11:02:02,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:02:02" (1/1) ... [2019-11-21 11:02:02,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:02:02" (1/1) ... [2019-11-21 11:02:02,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:02:02" (1/1) ... [2019-11-21 11:02:02,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:02:02" (1/1) ... [2019-11-21 11:02:02,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:02:02" (1/1) ... [2019-11-21 11:02:02,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:02:02" (1/1) ... [2019-11-21 11:02:02,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 11:02:02,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 11:02:02,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 11:02:02,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 11:02:02,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:02:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 11:02:02,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 11:02:02,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 11:02:02,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-21 11:02:02,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 11:02:02,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 11:02:02,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-21 11:02:02,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-21 11:02:02,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-21 11:02:02,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-21 11:02:02,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-21 11:02:02,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-21 11:02:02,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-21 11:02:02,994 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-21 11:02:02,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-21 11:02:02,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-21 11:02:02,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-21 11:02:02,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-21 11:02:02,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-21 11:02:02,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-21 11:02:02,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-21 11:02:02,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-21 11:02:02,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-21 11:02:02,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-21 11:02:02,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-21 11:02:02,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-21 11:02:02,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-21 11:02:02,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-21 11:02:02,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-21 11:02:02,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-21 11:02:02,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-21 11:02:02,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-21 11:02:02,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-21 11:02:02,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-21 11:02:02,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-21 11:02:02,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-21 11:02:02,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-21 11:02:03,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-21 11:02:03,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-21 11:02:03,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-21 11:02:03,000 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-21 11:02:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-21 11:02:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_unsafe_17 [2019-11-21 11:02:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2019-11-21 11:02:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-21 11:02:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 11:02:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-21 11:02:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-21 11:02:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-21 11:02:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 11:02:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 11:02:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 11:02:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 11:02:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 11:02:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 11:02:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 11:02:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 11:02:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 11:02:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 11:02:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 11:02:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 11:02:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 11:02:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 11:02:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 11:02:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 11:02:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 11:02:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 11:02:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-21 11:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-21 11:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-21 11:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 11:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 11:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 11:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 11:02:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 11:02:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 11:02:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 11:02:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 11:02:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 11:02:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 11:02:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 11:02:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 11:02:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 11:02:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 11:02:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 11:02:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 11:02:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 11:02:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 11:02:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 11:02:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 11:02:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 11:02:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 11:02:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 11:02:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 11:02:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 11:02:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 11:02:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 11:02:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 11:02:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 11:02:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 11:02:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 11:02:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 11:02:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 11:02:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 11:02:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 11:02:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 11:02:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 11:02:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 11:02:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 11:02:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 11:02:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 11:02:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 11:02:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 11:02:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 11:02:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 11:02:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 11:02:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 11:02:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 11:02:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 11:02:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 11:02:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 11:02:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 11:02:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 11:02:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 11:02:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 11:02:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 11:02:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 11:02:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 11:02:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 11:02:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 11:02:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 11:02:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 11:02:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 11:02:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 11:02:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 11:02:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 11:02:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 11:02:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 11:02:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 11:02:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 11:02:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 11:02:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 11:02:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 11:02:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 11:02:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 11:02:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 11:02:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 11:02:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 11:02:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 11:02:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 11:02:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 11:02:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 11:02:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 11:02:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 11:02:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 11:02:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 11:02:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-21 11:02:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-21 11:02:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-21 11:02:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-21 11:02:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-21 11:02:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-21 11:02:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-21 11:02:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-21 11:02:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 11:02:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-21 11:02:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-21 11:02:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-21 11:02:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-21 11:02:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-21 11:02:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-21 11:02:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-21 11:02:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-21 11:02:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-21 11:02:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-21 11:02:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-21 11:02:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-21 11:02:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-21 11:02:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-21 11:02:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 11:02:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-21 11:02:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-21 11:02:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-21 11:02:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-21 11:02:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-21 11:02:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-21 11:02:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-21 11:02:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-21 11:02:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-21 11:02:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-21 11:02:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-21 11:02:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-21 11:02:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-21 11:02:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-21 11:02:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-21 11:02:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-21 11:02:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-21 11:02:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-21 11:02:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-21 11:02:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-21 11:02:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-21 11:02:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-21 11:02:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-21 11:02:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-21 11:02:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_unsafe_17 [2019-11-21 11:02:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2019-11-21 11:02:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-21 11:02:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 11:02:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 11:02:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-21 11:02:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-21 11:02:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 11:02:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-21 11:02:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-21 11:02:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-21 11:02:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-21 11:02:03,667 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-21 11:02:04,069 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-21 11:02:04,597 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 11:02:04,598 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-21 11:02:04,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:02:04 BoogieIcfgContainer [2019-11-21 11:02:04,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 11:02:04,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 11:02:04,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 11:02:04,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 11:02:04,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 11:02:01" (1/3) ... [2019-11-21 11:02:04,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397eb947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 11:02:04, skipping insertion in model container [2019-11-21 11:02:04,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:02:02" (2/3) ... [2019-11-21 11:02:04,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397eb947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 11:02:04, skipping insertion in model container [2019-11-21 11:02:04,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:02:04" (3/3) ... [2019-11-21 11:02:04,609 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-1.i [2019-11-21 11:02:04,619 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 11:02:04,628 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 88 error locations. [2019-11-21 11:02:04,640 INFO L249 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2019-11-21 11:02:04,657 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 11:02:04,657 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 11:02:04,657 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 11:02:04,657 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 11:02:04,657 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 11:02:04,658 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 11:02:04,658 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 11:02:04,658 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 11:02:04,678 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2019-11-21 11:02:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-21 11:02:04,688 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:04,689 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:02:04,690 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:04,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:04,697 INFO L82 PathProgramCache]: Analyzing trace with hash 643410278, now seen corresponding path program 1 times [2019-11-21 11:02:04,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:04,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1053551708] [2019-11-21 11:02:04,707 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 11:02:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:02:05,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 11:02:05,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:05,276 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 11:02:05,277 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:02:05,292 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:02:05,293 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:02:05,296 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 11:02:05,352 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 11:02:05,353 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:05,435 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 11:02:05,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1053551708] [2019-11-21 11:02:05,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:02:05,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 11:02:05,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882527878] [2019-11-21 11:02:05,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 11:02:05,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:02:05,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 11:02:05,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:02:05,478 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 5 states. [2019-11-21 11:02:05,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:02:05,752 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2019-11-21 11:02:05,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 11:02:05,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-21 11:02:05,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:02:05,771 INFO L225 Difference]: With dead ends: 83 [2019-11-21 11:02:05,772 INFO L226 Difference]: Without dead ends: 80 [2019-11-21 11:02:05,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:02:05,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-21 11:02:05,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2019-11-21 11:02:05,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-21 11:02:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2019-11-21 11:02:05,865 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 16 [2019-11-21 11:02:05,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:02:05,866 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2019-11-21 11:02:05,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 11:02:05,867 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2019-11-21 11:02:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-21 11:02:05,869 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:05,869 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:02:06,072 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:06,073 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:06,074 INFO L82 PathProgramCache]: Analyzing trace with hash 643410279, now seen corresponding path program 1 times [2019-11-21 11:02:06,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:06,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2142365532] [2019-11-21 11:02:06,075 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 11:02:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:02:06,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-21 11:02:06,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:06,396 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 11:02:06,396 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:02:06,407 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:02:06,408 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:02:06,408 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 11:02:06,494 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 11:02:06,495 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:07,393 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 11:02:07,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2142365532] [2019-11-21 11:02:07,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:02:07,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2019-11-21 11:02:07,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515857956] [2019-11-21 11:02:07,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-21 11:02:07,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:02:07,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-21 11:02:07,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-21 11:02:07,398 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 14 states. [2019-11-21 11:02:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:02:08,900 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2019-11-21 11:02:08,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-21 11:02:08,901 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2019-11-21 11:02:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:02:08,903 INFO L225 Difference]: With dead ends: 91 [2019-11-21 11:02:08,903 INFO L226 Difference]: Without dead ends: 91 [2019-11-21 11:02:08,904 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2019-11-21 11:02:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-21 11:02:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2019-11-21 11:02:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-21 11:02:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2019-11-21 11:02:08,916 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 16 [2019-11-21 11:02:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:02:08,916 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2019-11-21 11:02:08,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-21 11:02:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2019-11-21 11:02:08,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-21 11:02:08,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:08,918 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:02:09,118 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:09,120 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:09,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1530913959, now seen corresponding path program 1 times [2019-11-21 11:02:09,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:09,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1175159380] [2019-11-21 11:02:09,122 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 11:02:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:02:09,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 11:02:09,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:09,419 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 11:02:09,419 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:09,463 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 11:02:09,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1175159380] [2019-11-21 11:02:09,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:02:09,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 11:02:09,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990771807] [2019-11-21 11:02:09,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 11:02:09,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:02:09,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 11:02:09,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:02:09,472 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 5 states. [2019-11-21 11:02:09,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:02:09,534 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2019-11-21 11:02:09,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 11:02:09,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-21 11:02:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:02:09,539 INFO L225 Difference]: With dead ends: 80 [2019-11-21 11:02:09,539 INFO L226 Difference]: Without dead ends: 80 [2019-11-21 11:02:09,539 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:02:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-21 11:02:09,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2019-11-21 11:02:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-21 11:02:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2019-11-21 11:02:09,560 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 16 [2019-11-21 11:02:09,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:02:09,561 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2019-11-21 11:02:09,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 11:02:09,561 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2019-11-21 11:02:09,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 11:02:09,564 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:09,565 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 11:02:09,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:09,769 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:09,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:09,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1529128267, now seen corresponding path program 1 times [2019-11-21 11:02:09,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:09,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1006487517] [2019-11-21 11:02:09,773 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 11:02:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:02:09,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 11:02:09,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:10,030 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 11:02:10,030 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:02:10,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1006487517] [2019-11-21 11:02:10,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:02:10,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 11:02:10,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736443052] [2019-11-21 11:02:10,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 11:02:10,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:02:10,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 11:02:10,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:02:10,150 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 5 states. [2019-11-21 11:02:10,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:02:10,217 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2019-11-21 11:02:10,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 11:02:10,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-21 11:02:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:02:10,218 INFO L225 Difference]: With dead ends: 80 [2019-11-21 11:02:10,218 INFO L226 Difference]: Without dead ends: 80 [2019-11-21 11:02:10,219 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 11:02:10,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-21 11:02:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2019-11-21 11:02:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-21 11:02:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2019-11-21 11:02:10,227 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 17 [2019-11-21 11:02:10,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:02:10,228 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2019-11-21 11:02:10,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 11:02:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2019-11-21 11:02:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 11:02:10,229 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:10,229 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 11:02:10,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:10,433 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:10,434 INFO L82 PathProgramCache]: Analyzing trace with hash 213682068, now seen corresponding path program 1 times [2019-11-21 11:02:10,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:10,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2020692076] [2019-11-21 11:02:10,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 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 11:02:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:02:10,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-21 11:02:10,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:10,657 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 11:02:10,657 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:10,704 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 11:02:10,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2020692076] [2019-11-21 11:02:10,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:02:10,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-21 11:02:10,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729776107] [2019-11-21 11:02:10,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 11:02:10,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:02:10,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 11:02:10,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 11:02:10,707 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 3 states. [2019-11-21 11:02:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:02:10,882 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2019-11-21 11:02:10,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 11:02:10,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-21 11:02:10,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:02:10,885 INFO L225 Difference]: With dead ends: 115 [2019-11-21 11:02:10,886 INFO L226 Difference]: Without dead ends: 110 [2019-11-21 11:02:10,886 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 11:02:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-21 11:02:10,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 76. [2019-11-21 11:02:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-21 11:02:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2019-11-21 11:02:10,908 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 17 [2019-11-21 11:02:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:02:10,908 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2019-11-21 11:02:10,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 11:02:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2019-11-21 11:02:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 11:02:10,911 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:10,912 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:02:11,123 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:11,125 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:11,126 INFO L82 PathProgramCache]: Analyzing trace with hash 115925255, now seen corresponding path program 1 times [2019-11-21 11:02:11,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:11,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1562729988] [2019-11-21 11:02:11,127 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 11:02:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:02:11,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-21 11:02:11,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:11,420 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 11:02:11,420 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:02:11,426 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:02:11,427 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:02:11,427 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 11:02:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:02:11,562 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:12,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:02:12,791 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-11-21 11:02:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:02:13,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1562729988] [2019-11-21 11:02:13,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 11:02:13,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2019-11-21 11:02:13,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254687876] [2019-11-21 11:02:13,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-21 11:02:13,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:02:13,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-21 11:02:13,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-21 11:02:13,179 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 19 states. [2019-11-21 11:02:14,113 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2019-11-21 11:02:14,722 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 11:02:15,151 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-11-21 11:02:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:02:15,940 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2019-11-21 11:02:15,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-21 11:02:15,941 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2019-11-21 11:02:15,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:02:15,942 INFO L225 Difference]: With dead ends: 93 [2019-11-21 11:02:15,943 INFO L226 Difference]: Without dead ends: 93 [2019-11-21 11:02:15,944 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2019-11-21 11:02:15,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-21 11:02:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2019-11-21 11:02:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-21 11:02:15,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2019-11-21 11:02:15,959 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 22 [2019-11-21 11:02:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:02:15,959 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2019-11-21 11:02:15,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-21 11:02:15,961 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2019-11-21 11:02:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-21 11:02:15,964 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:15,964 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:02:16,174 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:16,175 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:16,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1492536893, now seen corresponding path program 1 times [2019-11-21 11:02:16,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:16,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1930378344] [2019-11-21 11:02:16,177 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 11:02:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:02:16,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-21 11:02:16,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:02:16,553 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:02:16,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1930378344] [2019-11-21 11:02:16,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 11:02:16,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-21 11:02:16,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926816073] [2019-11-21 11:02:16,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-21 11:02:16,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:02:16,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-21 11:02:16,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-21 11:02:16,671 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 12 states. [2019-11-21 11:02:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:02:17,068 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2019-11-21 11:02:17,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-21 11:02:17,069 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2019-11-21 11:02:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:02:17,070 INFO L225 Difference]: With dead ends: 94 [2019-11-21 11:02:17,070 INFO L226 Difference]: Without dead ends: 94 [2019-11-21 11:02:17,071 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2019-11-21 11:02:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-21 11:02:17,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2019-11-21 11:02:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-11-21 11:02:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2019-11-21 11:02:17,077 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 30 [2019-11-21 11:02:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:02:17,077 INFO L462 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2019-11-21 11:02:17,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-21 11:02:17,078 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2019-11-21 11:02:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-21 11:02:17,079 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:17,079 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:02:17,283 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:17,284 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:17,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1093707847, now seen corresponding path program 2 times [2019-11-21 11:02:17,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:17,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1161803226] [2019-11-21 11:02:17,286 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:17,620 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-21 11:02:17,620 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 11:02:17,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-21 11:02:17,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:17,644 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 11:02:17,645 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:02:17,651 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:02:17,652 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:02:17,652 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 11:02:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:02:17,940 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:19,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:02:20,229 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-11-21 11:02:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:02:20,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1161803226] [2019-11-21 11:02:20,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 11:02:20,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2019-11-21 11:02:20,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268776690] [2019-11-21 11:02:20,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-21 11:02:20,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:02:20,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-21 11:02:20,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2019-11-21 11:02:20,678 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 27 states. [2019-11-21 11:02:22,254 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2019-11-21 11:02:23,146 WARN L192 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 11:02:23,595 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-11-21 11:02:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:02:24,619 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2019-11-21 11:02:24,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-21 11:02:24,620 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 34 [2019-11-21 11:02:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:02:24,621 INFO L225 Difference]: With dead ends: 104 [2019-11-21 11:02:24,621 INFO L226 Difference]: Without dead ends: 104 [2019-11-21 11:02:24,622 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=302, Invalid=1420, Unknown=0, NotChecked=0, Total=1722 [2019-11-21 11:02:24,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-21 11:02:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2019-11-21 11:02:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-21 11:02:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2019-11-21 11:02:24,635 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 34 [2019-11-21 11:02:24,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:02:24,636 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2019-11-21 11:02:24,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-21 11:02:24,636 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2019-11-21 11:02:24,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-21 11:02:24,638 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:24,638 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:02:24,841 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:24,842 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:24,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:24,844 INFO L82 PathProgramCache]: Analyzing trace with hash 648183772, now seen corresponding path program 2 times [2019-11-21 11:02:24,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:24,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1128921933] [2019-11-21 11:02:24,845 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 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 11:02:25,092 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-21 11:02:25,092 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 11:02:25,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 11:02:25,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-21 11:02:25,136 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-21 11:02:25,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1128921933] [2019-11-21 11:02:25,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:02:25,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-21 11:02:25,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404530785] [2019-11-21 11:02:25,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 11:02:25,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:02:25,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 11:02:25,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-21 11:02:25,184 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand 8 states. [2019-11-21 11:02:25,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:02:25,312 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions. [2019-11-21 11:02:25,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 11:02:25,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2019-11-21 11:02:25,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:02:25,315 INFO L225 Difference]: With dead ends: 139 [2019-11-21 11:02:25,315 INFO L226 Difference]: Without dead ends: 139 [2019-11-21 11:02:25,316 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-21 11:02:25,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-11-21 11:02:25,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 107. [2019-11-21 11:02:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-21 11:02:25,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2019-11-21 11:02:25,330 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 45 [2019-11-21 11:02:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:02:25,330 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2019-11-21 11:02:25,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 11:02:25,330 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2019-11-21 11:02:25,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-21 11:02:25,335 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:25,335 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:02:25,541 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:25,542 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:25,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1010331769, now seen corresponding path program 3 times [2019-11-21 11:02:25,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:25,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1145580180] [2019-11-21 11:02:25,544 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 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 11:02:26,106 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-11-21 11:02:26,106 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 11:02:26,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-21 11:02:26,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:02:26,474 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 11:02:28,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1145580180] [2019-11-21 11:02:28,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 11:02:28,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 38 [2019-11-21 11:02:28,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660362465] [2019-11-21 11:02:28,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-21 11:02:28,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:02:28,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-21 11:02:28,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1146, Unknown=0, NotChecked=0, Total=1406 [2019-11-21 11:02:28,652 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand 38 states. [2019-11-21 11:02:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:02:29,714 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2019-11-21 11:02:29,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-21 11:02:29,716 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 46 [2019-11-21 11:02:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:02:29,717 INFO L225 Difference]: With dead ends: 104 [2019-11-21 11:02:29,717 INFO L226 Difference]: Without dead ends: 104 [2019-11-21 11:02:29,719 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=285, Invalid=1197, Unknown=0, NotChecked=0, Total=1482 [2019-11-21 11:02:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-21 11:02:29,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2019-11-21 11:02:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-21 11:02:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2019-11-21 11:02:29,724 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 46 [2019-11-21 11:02:29,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:02:29,725 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2019-11-21 11:02:29,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-21 11:02:29,725 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2019-11-21 11:02:29,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-21 11:02:29,727 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:29,727 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:02:29,932 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:29,937 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:29,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:29,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1199700182, now seen corresponding path program 1 times [2019-11-21 11:02:29,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:29,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [477903074] [2019-11-21 11:02:29,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 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 11:02:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:02:30,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-21 11:02:30,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:30,414 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 11:02:30,414 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:02:30,416 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:02:30,416 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:02:30,417 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 11:02:30,514 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:02:30,515 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2019-11-21 11:02:30,516 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:02:30,535 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-21 11:02:30,536 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 11:02:30,536 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2019-11-21 11:02:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-21 11:02:30,574 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-11-21 11:02:34,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [477903074] [2019-11-21 11:02:34,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-21 11:02:34,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-11-21 11:02:34,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557402913] [2019-11-21 11:02:34,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 11:02:34,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:02:34,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 11:02:34,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=173, Unknown=1, NotChecked=0, Total=210 [2019-11-21 11:02:34,929 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand 8 states. [2019-11-21 11:02:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:02:48,484 INFO L93 Difference]: Finished difference Result 170 states and 194 transitions. [2019-11-21 11:02:48,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-21 11:02:48,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2019-11-21 11:02:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:02:48,486 INFO L225 Difference]: With dead ends: 170 [2019-11-21 11:02:48,486 INFO L226 Difference]: Without dead ends: 170 [2019-11-21 11:02:48,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=83, Invalid=377, Unknown=2, NotChecked=0, Total=462 [2019-11-21 11:02:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-21 11:02:48,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 113. [2019-11-21 11:02:48,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-11-21 11:02:48,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2019-11-21 11:02:48,495 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 56 [2019-11-21 11:02:48,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:02:48,495 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2019-11-21 11:02:48,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 11:02:48,496 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2019-11-21 11:02:48,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-21 11:02:48,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:02:48,497 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:02:48,700 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:48,703 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:02:48,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:02:48,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1199700183, now seen corresponding path program 1 times [2019-11-21 11:02:48,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:02:48,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [475155271] [2019-11-21 11:02:48,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:02:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:02:49,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-21 11:02:49,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:02:49,316 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 11:02:49,316 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:02:49,326 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:02:49,330 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 11:02:49,331 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 11:02:49,338 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:02:49,339 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:02:49,339 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-21 11:02:51,574 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 11:02:51,576 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-11-21 11:02:51,577 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:02:51,596 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:02:51,608 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:02:51,609 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-21 11:02:51,609 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 11:02:51,625 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:02:51,626 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:02:51,626 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:28, output treesize:14 [2019-11-21 11:02:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-21 11:02:51,665 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:02:51,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 11:02:53,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 11:02:53,162 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:02:53,162 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:02:53,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:02:53,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:02:53,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:02:53,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:02:53,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:02:53,170 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:03:04,744 WARN L192 SmtUtils]: Spent 6.83 s on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2019-11-21 11:03:04,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 11:03:08,797 INFO L392 ElimStorePlain]: Different costs {1=[|v_#valid_250|], 2=[|v_#length_208|]} [2019-11-21 11:03:08,809 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-21 11:03:08,809 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:03:08,822 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:03:08,825 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-21 11:03:08,825 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 11:03:08,833 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:03:08,834 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:03:08,834 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:23, output treesize:5 [2019-11-21 11:03:09,445 INFO L392 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2019-11-21 11:03:09,459 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-21 11:03:09,460 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:03:09,476 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:03:09,479 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-21 11:03:09,479 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 11:03:09,496 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:03:09,497 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 11:03:09,497 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:33, output treesize:16 [2019-11-21 11:03:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-21 11:03:09,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [475155271] [2019-11-21 11:03:09,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 11:03:09,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2019-11-21 11:03:09,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509648833] [2019-11-21 11:03:09,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-21 11:03:09,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:03:09,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-21 11:03:09,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=406, Unknown=4, NotChecked=0, Total=462 [2019-11-21 11:03:09,671 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand 22 states. [2019-11-21 11:03:47,558 WARN L192 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-11-21 11:04:03,747 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-11-21 11:04:14,449 WARN L192 SmtUtils]: Spent 6.17 s on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-11-21 11:04:21,640 WARN L192 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-11-21 11:04:30,299 WARN L192 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2019-11-21 11:04:33,431 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse8 (bvmul c_alloc_unsafe_17_~i~0 (_ bv8 32)))) (let ((.cse5 (bvadd c_alloc_unsafe_17_~array.offset .cse8 (_ bv8 32))) (.cse7 (bvadd c_alloc_unsafe_17_~array.offset .cse8))) (let ((.cse0 (bvsle (_ bv0 32) .cse7)) (.cse1 (forall ((|v_ldv_malloc_#t~malloc12.base_44| (_ BitVec 32))) (not (= (select |c_#valid| |v_ldv_malloc_#t~malloc12.base_44|) (_ bv0 1))))) (.cse6 (bvsle .cse7 .cse5))) (and (or .cse0 .cse1) (forall ((v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2 (_ BitVec 32)) (v_alloc_unsafe_17_~array.base_BEFORE_CALL_4 (_ BitVec 32)) (v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ BitVec 32))) (let ((.cse4 (bvmul v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ bv8 32)))) (let ((.cse3 (bvadd v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2 .cse4)) (.cse2 (bvadd v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2 .cse4 (_ bv8 32)))) (or (exists ((|v_ldv_malloc_#t~malloc12.base_44| (_ BitVec 32)) (v_ldv_malloc_~size_52 (_ BitVec 32))) (and (not (bvsle (bvadd v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2 (bvmul v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ bv8 32)) (_ bv8 32)) (select (store |c_old(#length)| |v_ldv_malloc_#t~malloc12.base_44| v_ldv_malloc_~size_52) v_alloc_unsafe_17_~array.base_BEFORE_CALL_4))) (= (select |c_old(#valid)| |v_ldv_malloc_#t~malloc12.base_44|) (_ bv0 1)))) (bvsle .cse2 (select |c_#length| v_alloc_unsafe_17_~array.base_BEFORE_CALL_4)) (not (bvsle (_ bv0 32) .cse3)) (not (bvsle .cse3 .cse2)))))) .cse0 (forall ((|v_ldv_malloc_#t~malloc12.base_44| (_ BitVec 32)) (v_ldv_malloc_~size_52 (_ BitVec 32))) (or (bvsle (bvadd c_alloc_unsafe_17_~array.offset (bvmul c_alloc_unsafe_17_~i~0 (_ bv8 32)) (_ bv8 32)) (select (store |c_#length| |v_ldv_malloc_#t~malloc12.base_44| v_ldv_malloc_~size_52) c_alloc_unsafe_17_~array.base)) (not (= (select |c_#valid| |v_ldv_malloc_#t~malloc12.base_44|) (_ bv0 1))))) (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#t~malloc12.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#t~malloc12.base|)) (= (store |c_old(#length)| |ldv_malloc_#t~malloc12.base| ldv_malloc_~size) |c_#length|))) (bvsle .cse5 (select |c_#length| c_alloc_unsafe_17_~array.base)) (or .cse1 .cse6) .cse6 (exists ((v_prenex_16 (_ BitVec 32))) (= (select |c_old(#valid)| v_prenex_16) (_ bv0 1))))))) is different from false [2019-11-21 11:04:41,184 WARN L192 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-11-21 11:05:00,192 WARN L192 SmtUtils]: Spent 8.13 s on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2019-11-21 11:05:06,848 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-11-21 11:05:48,919 WARN L192 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-11-21 11:05:51,452 WARN L192 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2019-11-21 11:06:09,732 WARN L192 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-11-21 11:06:29,533 WARN L192 SmtUtils]: Spent 14.75 s on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-11-21 11:06:34,839 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 18 [2019-11-21 11:07:04,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:07:04,921 INFO L93 Difference]: Finished difference Result 299 states and 348 transitions. [2019-11-21 11:07:04,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-21 11:07:04,939 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2019-11-21 11:07:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:07:04,941 INFO L225 Difference]: With dead ends: 299 [2019-11-21 11:07:04,941 INFO L226 Difference]: Without dead ends: 299 [2019-11-21 11:07:04,942 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 104.8s TimeCoverageRelationStatistics Valid=262, Invalid=1707, Unknown=15, NotChecked=86, Total=2070 [2019-11-21 11:07:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2019-11-21 11:07:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 150. [2019-11-21 11:07:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-21 11:07:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 180 transitions. [2019-11-21 11:07:04,951 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 180 transitions. Word has length 56 [2019-11-21 11:07:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:07:04,951 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 180 transitions. [2019-11-21 11:07:04,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-21 11:07:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 180 transitions. [2019-11-21 11:07:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-21 11:07:04,953 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:07:04,953 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:07:05,158 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:07:05,159 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:07:05,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:07:05,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1860597250, now seen corresponding path program 1 times [2019-11-21 11:07:05,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:07:05,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1892151036] [2019-11-21 11:07:05,161 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 11:07:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:07:05,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 11:07:05,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:07:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-21 11:07:05,469 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:07:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-21 11:07:05,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1892151036] [2019-11-21 11:07:05,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:07:05,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 11:07:05,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036599001] [2019-11-21 11:07:05,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 11:07:05,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:07:05,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 11:07:05,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 11:07:05,509 INFO L87 Difference]: Start difference. First operand 150 states and 180 transitions. Second operand 5 states. [2019-11-21 11:07:05,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:07:05,557 INFO L93 Difference]: Finished difference Result 174 states and 206 transitions. [2019-11-21 11:07:05,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 11:07:05,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2019-11-21 11:07:05,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:07:05,561 INFO L225 Difference]: With dead ends: 174 [2019-11-21 11:07:05,561 INFO L226 Difference]: Without dead ends: 174 [2019-11-21 11:07:05,561 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-21 11:07:05,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-11-21 11:07:05,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 150. [2019-11-21 11:07:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-21 11:07:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2019-11-21 11:07:05,575 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 58 [2019-11-21 11:07:05,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:07:05,575 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2019-11-21 11:07:05,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 11:07:05,576 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2019-11-21 11:07:05,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-21 11:07:05,577 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:07:05,577 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:07:05,781 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:07:05,781 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:07:05,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:07:05,782 INFO L82 PathProgramCache]: Analyzing trace with hash -691559711, now seen corresponding path program 1 times [2019-11-21 11:07:05,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:07:05,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [269523142] [2019-11-21 11:07:05,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:07:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:07:06,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-21 11:07:06,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:07:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-11-21 11:07:06,197 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:07:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-11-21 11:07:06,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [269523142] [2019-11-21 11:07:06,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 11:07:06,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-21 11:07:06,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520734392] [2019-11-21 11:07:06,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 11:07:06,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 11:07:06,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 11:07:06,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-21 11:07:06,237 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 6 states. [2019-11-21 11:07:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 11:07:06,359 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2019-11-21 11:07:06,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 11:07:06,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2019-11-21 11:07:06,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 11:07:06,361 INFO L225 Difference]: With dead ends: 155 [2019-11-21 11:07:06,361 INFO L226 Difference]: Without dead ends: 155 [2019-11-21 11:07:06,362 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-21 11:07:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-11-21 11:07:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2019-11-21 11:07:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-21 11:07:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2019-11-21 11:07:06,369 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 58 [2019-11-21 11:07:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 11:07:06,370 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2019-11-21 11:07:06,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 11:07:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2019-11-21 11:07:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-21 11:07:06,371 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 11:07:06,372 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 11:07:06,584 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:07:06,585 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, alloc_unsafe_17Err3REQUIRES_VIOLATION, alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err2REQUIRES_VIOLATION, alloc_unsafe_17Err0REQUIRES_VIOLATION, alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_unsafe_17Err1REQUIRES_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, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 11:07:06,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 11:07:06,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1753615753, now seen corresponding path program 1 times [2019-11-21 11:07:06,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 11:07:06,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1610372926] [2019-11-21 11:07:06,586 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 11:07:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 11:07:06,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-21 11:07:06,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 11:07:06,988 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 11:07:06,989 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 11:07:06,990 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 11:07:06,991 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 11:07:06,991 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 11:07:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-21 11:07:07,068 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 11:07:07,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 11:07:07,380 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-21 11:07:07,388 INFO L168 Benchmark]: Toolchain (without parser) took 305596.30 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 329.3 MB). Free memory was 952.3 MB in the beginning and 885.7 MB in the end (delta: 66.6 MB). Peak memory consumption was 395.8 MB. Max. memory is 11.5 GB. [2019-11-21 11:07:07,389 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 11:07:07,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 961.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -150.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-21 11:07:07,390 INFO L168 Benchmark]: Boogie Preprocessor took 168.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-21 11:07:07,390 INFO L168 Benchmark]: RCFGBuilder took 1676.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 979.1 MB in the end (delta: 116.7 MB). Peak memory consumption was 116.7 MB. Max. memory is 11.5 GB. [2019-11-21 11:07:07,391 INFO L168 Benchmark]: TraceAbstraction took 302785.69 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 182.5 MB). Free memory was 979.1 MB in the beginning and 885.7 MB in the end (delta: 93.3 MB). Peak memory consumption was 275.8 MB. Max. memory is 11.5 GB. [2019-11-21 11:07:07,395 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 961.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -150.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 168.13 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1676.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 979.1 MB in the end (delta: 116.7 MB). Peak memory consumption was 116.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 302785.69 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 182.5 MB). Free memory was 979.1 MB in the beginning and 885.7 MB in the end (delta: 93.3 MB). Peak memory consumption was 275.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...