./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/array-memsafety/count_down_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2e94e6aa Calling Ultimate with: 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 /storage/repos/svcomp/c/array-memsafety/count_down_unsafe_false-valid-deref.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.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 32bit --witnessprinter.graph.data.programhash 71c9f2b0d8bf95458c9b099304dfb78f8cadcf0a ............................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 17:12:34,674 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 17:12:34,676 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 17:12:34,693 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 17:12:34,694 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 17:12:34,696 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 17:12:34,697 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 17:12:34,699 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 17:12:34,702 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 17:12:34,705 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 17:12:34,709 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 17:12:34,710 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 17:12:34,711 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 17:12:34,714 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 17:12:34,722 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 17:12:34,723 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 17:12:34,724 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 17:12:34,725 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 17:12:34,731 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 17:12:34,734 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 17:12:34,736 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 17:12:34,738 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 17:12:34,743 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 17:12:34,743 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 17:12:34,743 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 17:12:34,744 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 17:12:34,748 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 17:12:34,749 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 17:12:34,750 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 17:12:34,754 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 17:12:34,754 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 17:12:34,755 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 17:12:34,755 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 17:12:34,756 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 17:12:34,759 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 17:12:34,760 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 17:12:34,762 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-01 17:12:34,787 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 17:12:34,787 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 17:12:34,789 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 17:12:34,789 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 17:12:34,789 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 17:12:34,789 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 17:12:34,790 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 17:12:34,790 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 17:12:34,790 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 17:12:34,790 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 17:12:34,790 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 17:12:34,790 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-01 17:12:34,791 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-01 17:12:34,791 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-01 17:12:34,791 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-01 17:12:34,791 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 17:12:34,791 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 17:12:34,792 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 17:12:34,792 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 17:12:34,792 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-01 17:12:34,792 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-01 17:12:34,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 17:12:34,792 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 17:12:34,795 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-01 17:12:34,795 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 17:12:34,795 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-01 17:12:34,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71c9f2b0d8bf95458c9b099304dfb78f8cadcf0a [2019-01-01 17:12:34,843 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 17:12:34,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 17:12:34,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 17:12:34,867 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 17:12:34,868 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 17:12:34,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/count_down_unsafe_false-valid-deref.i [2019-01-01 17:12:34,929 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d564aa2f5/74d21baacdab4aa8b5d1006b08fc8b3b/FLAG0f419a4a9 [2019-01-01 17:12:35,413 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 17:12:35,413 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/count_down_unsafe_false-valid-deref.i [2019-01-01 17:12:35,440 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d564aa2f5/74d21baacdab4aa8b5d1006b08fc8b3b/FLAG0f419a4a9 [2019-01-01 17:12:35,712 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d564aa2f5/74d21baacdab4aa8b5d1006b08fc8b3b [2019-01-01 17:12:35,715 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 17:12:35,717 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-01 17:12:35,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 17:12:35,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 17:12:35,722 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 17:12:35,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 05:12:35" (1/1) ... [2019-01-01 17:12:35,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a31d3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:35, skipping insertion in model container [2019-01-01 17:12:35,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 05:12:35" (1/1) ... [2019-01-01 17:12:35,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 17:12:35,792 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 17:12:36,242 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 17:12:36,260 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 17:12:36,322 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 17:12:36,384 INFO L195 MainTranslator]: Completed translation [2019-01-01 17:12:36,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36 WrapperNode [2019-01-01 17:12:36,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 17:12:36,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 17:12:36,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 17:12:36,385 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 17:12:36,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 17:12:36,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 17:12:36,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 17:12:36,530 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 17:12:36,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (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 [2019-01-01 17:12:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-01 17:12:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 17:12:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-01-01 17:12:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-01-01 17:12:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-01 17:12:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-01-01 17:12:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-01-01 17:12:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-01 17:12:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-01 17:12:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-01 17:12:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-01 17:12:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-01 17:12:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-01 17:12:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-01 17:12:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-01 17:12:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-01 17:12:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-01 17:12:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-01 17:12:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-01 17:12:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-01 17:12:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-01 17:12:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-01 17:12:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-01 17:12:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-01 17:12:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-01 17:12:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-01 17:12:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-01 17:12:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-01 17:12:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-01 17:12:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-01 17:12:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-01 17:12:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-01 17:12:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-01 17:12:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-01 17:12:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-01 17:12:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-01 17:12:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-01 17:12:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-01 17:12:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-01 17:12:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-01 17:12:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-01 17:12:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-01 17:12:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-01 17:12:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-01 17:12:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-01 17:12:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-01 17:12:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-01 17:12:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-01 17:12:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-01 17:12:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-01 17:12:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-01 17:12:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-01 17:12:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-01 17:12:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-01 17:12:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-01 17:12:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-01 17:12:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-01 17:12:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-01 17:12:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-01 17:12:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-01 17:12:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-01 17:12:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-01 17:12:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-01 17:12:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-01 17:12:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-01 17:12:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-01 17:12:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-01 17:12:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-01 17:12:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-01 17:12:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-01 17:12:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-01 17:12:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-01 17:12:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-01 17:12:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-01 17:12:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-01 17:12:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-01 17:12:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-01 17:12:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-01 17:12:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-01 17:12:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-01 17:12:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-01 17:12:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-01 17:12:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-01 17:12:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-01 17:12:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-01 17:12:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-01 17:12:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-01 17:12:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-01 17:12:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-01 17:12:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-01 17:12:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-01 17:12:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-01 17:12:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-01 17:12:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-01 17:12:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-01 17:12:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-01 17:12:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-01 17:12:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-01 17:12:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-01 17:12:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-01 17:12:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-01 17:12:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-01 17:12:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-01 17:12:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-01 17:12:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-01 17:12:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-01 17:12:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-01 17:12:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-01 17:12:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-01 17:12:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-01 17:12:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-01 17:12:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-01 17:12:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-01 17:12:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-01 17:12:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 17:12:37,365 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 17:12:37,365 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2019-01-01 17:12:37,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:12:37 BoogieIcfgContainer [2019-01-01 17:12:37,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 17:12:37,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-01 17:12:37,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-01 17:12:37,371 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-01 17:12:37,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.01 05:12:35" (1/3) ... [2019-01-01 17:12:37,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff246bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 05:12:37, skipping insertion in model container [2019-01-01 17:12:37,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (2/3) ... [2019-01-01 17:12:37,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff246bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 05:12:37, skipping insertion in model container [2019-01-01 17:12:37,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:12:37" (3/3) ... [2019-01-01 17:12:37,375 INFO L112 eAbstractionObserver]: Analyzing ICFG count_down_unsafe_false-valid-deref.i [2019-01-01 17:12:37,385 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-01 17:12:37,392 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-01-01 17:12:37,411 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-01-01 17:12:37,439 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 17:12:37,440 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-01 17:12:37,440 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-01 17:12:37,440 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-01 17:12:37,442 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 17:12:37,442 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 17:12:37,442 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-01 17:12:37,442 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 17:12:37,443 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-01 17:12:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-01-01 17:12:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-01 17:12:37,471 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:12:37,472 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:12:37,475 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2019-01-01 17:12:37,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:12:37,482 INFO L82 PathProgramCache]: Analyzing trace with hash -355510925, now seen corresponding path program 1 times [2019-01-01 17:12:37,485 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:12:37,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:12:37,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:12:37,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:12:37,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:12:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:12:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:12:37,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:12:37,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-01 17:12:37,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-01 17:12:37,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-01 17:12:37,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-01 17:12:37,701 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2019-01-01 17:12:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:12:37,803 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-01-01 17:12:37,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-01 17:12:37,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-01-01 17:12:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:12:37,816 INFO L225 Difference]: With dead ends: 36 [2019-01-01 17:12:37,816 INFO L226 Difference]: Without dead ends: 33 [2019-01-01 17:12:37,818 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-01 17:12:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-01-01 17:12:37,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-01-01 17:12:37,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-01-01 17:12:37,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-01-01 17:12:37,858 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2019-01-01 17:12:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:12:37,858 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-01-01 17:12:37,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-01 17:12:37,859 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-01-01 17:12:37,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-01 17:12:37,859 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:12:37,860 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:12:37,860 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2019-01-01 17:12:37,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:12:37,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1951364451, now seen corresponding path program 1 times [2019-01-01 17:12:37,861 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:12:37,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:12:37,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:12:37,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:12:37,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:12:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 17:12:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 17:12:37,936 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-01 17:12:37,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.01 05:12:37 BoogieIcfgContainer [2019-01-01 17:12:37,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-01 17:12:37,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 17:12:37,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 17:12:37,961 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 17:12:37,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:12:37" (3/4) ... [2019-01-01 17:12:37,963 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-01 17:12:38,018 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 17:12:38,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 17:12:38,020 INFO L168 Benchmark]: Toolchain (without parser) took 2303.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -104.3 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:38,021 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 17:12:38,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.74 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 931.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:38,023 INFO L168 Benchmark]: Boogie Preprocessor took 144.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -197.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:38,024 INFO L168 Benchmark]: RCFGBuilder took 835.62 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:38,024 INFO L168 Benchmark]: TraceAbstraction took 593.37 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:38,026 INFO L168 Benchmark]: Witness Printer took 58.58 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:38,034 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 666.74 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 931.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 144.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -197.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 835.62 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 593.37 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Witness Printer took 58.58 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 552]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L541] int i, j; [L542] int val; [L543] int length = __VERIFIER_nondet_int(); [L544] COND TRUE length < 1 [L544] length = 1 VAL [length=1] [L545] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={1:0}, arr={1:0}, length=1] [L546] COND FALSE !(!arr) [L547] i=0 VAL [__builtin_alloca (length)={1:0}, arr={1:0}, i=0, length=1] [L547] COND TRUE i