./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/array-memsafety/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.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/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.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 693983fd65e20b5d89b8cfa65a19d47075cafd63 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 17:13:25,033 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 17:13:25,035 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 17:13:25,047 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 17:13:25,048 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 17:13:25,049 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 17:13:25,050 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 17:13:25,052 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 17:13:25,054 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 17:13:25,055 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 17:13:25,056 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 17:13:25,057 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 17:13:25,057 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 17:13:25,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 17:13:25,065 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 17:13:25,065 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 17:13:25,070 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 17:13:25,072 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 17:13:25,078 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 17:13:25,080 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 17:13:25,083 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 17:13:25,088 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 17:13:25,093 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 17:13:25,093 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 17:13:25,093 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 17:13:25,094 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 17:13:25,096 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 17:13:25,098 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 17:13:25,098 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 17:13:25,099 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 17:13:25,100 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 17:13:25,102 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 17:13:25,103 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 17:13:25,103 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 17:13:25,104 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 17:13:25,104 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 17:13:25,109 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-01 17:13:25,124 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 17:13:25,124 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 17:13:25,125 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 17:13:25,125 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 17:13:25,126 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 17:13:25,126 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 17:13:25,126 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 17:13:25,126 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 17:13:25,126 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 17:13:25,127 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 17:13:25,127 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 17:13:25,127 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-01 17:13:25,127 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-01 17:13:25,127 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-01 17:13:25,127 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-01 17:13:25,128 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 17:13:25,128 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 17:13:25,128 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 17:13:25,128 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 17:13:25,128 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-01 17:13:25,129 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-01 17:13:25,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 17:13:25,129 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 17:13:25,129 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-01 17:13:25,129 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 17:13:25,130 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-01 17:13:25,130 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 -> 693983fd65e20b5d89b8cfa65a19d47075cafd63 [2019-01-01 17:13:25,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 17:13:25,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 17:13:25,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 17:13:25,209 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 17:13:25,210 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 17:13:25,210 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i [2019-01-01 17:13:25,274 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94dbdb563/e4c1f31812704cbda05cb1af03d4834c/FLAG02965f49d [2019-01-01 17:13:25,767 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 17:13:25,767 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i [2019-01-01 17:13:25,785 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94dbdb563/e4c1f31812704cbda05cb1af03d4834c/FLAG02965f49d [2019-01-01 17:13:26,097 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94dbdb563/e4c1f31812704cbda05cb1af03d4834c [2019-01-01 17:13:26,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 17:13:26,103 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-01 17:13:26,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 17:13:26,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 17:13:26,108 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 17:13:26,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 05:13:26" (1/1) ... [2019-01-01 17:13:26,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178d5ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:26, skipping insertion in model container [2019-01-01 17:13:26,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 05:13:26" (1/1) ... [2019-01-01 17:13:26,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 17:13:26,179 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 17:13:26,558 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 17:13:26,575 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 17:13:26,713 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 17:13:26,786 INFO L195 MainTranslator]: Completed translation [2019-01-01 17:13:26,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:26 WrapperNode [2019-01-01 17:13:26,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 17:13:26,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 17:13:26,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 17:13:26,788 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 17:13:26,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:26" (1/1) ... [2019-01-01 17:13:26,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:26" (1/1) ... [2019-01-01 17:13:26,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:26" (1/1) ... [2019-01-01 17:13:26,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:26" (1/1) ... [2019-01-01 17:13:26,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:26" (1/1) ... [2019-01-01 17:13:26,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:26" (1/1) ... [2019-01-01 17:13:26,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:26" (1/1) ... [2019-01-01 17:13:26,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 17:13:26,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 17:13:26,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 17:13:26,863 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 17:13:26,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:26" (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 17:13:26,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-01 17:13:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 17:13:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-01-01 17:13:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-01-01 17:13:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrlen [2019-01-01 17:13:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-01 17:13:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-01-01 17:13:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-01-01 17:13:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-01 17:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-01 17:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-01 17:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-01 17:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-01 17:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-01 17:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-01 17:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-01 17:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-01 17:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-01 17:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-01 17:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-01 17:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-01 17:13:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-01 17:13:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-01 17:13:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-01 17:13:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-01 17:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-01 17:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-01 17:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-01 17:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-01 17:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-01 17:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-01 17:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-01 17:13:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-01 17:13:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-01 17:13:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-01 17:13:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-01 17:13:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-01 17:13:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-01 17:13:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-01 17:13:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-01 17:13:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-01 17:13:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-01 17:13:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-01 17:13:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-01 17:13:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-01 17:13:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-01 17:13:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-01 17:13:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-01 17:13:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-01 17:13:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-01 17:13:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-01 17:13:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-01 17:13:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-01 17:13:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-01 17:13:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-01 17:13:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-01 17:13:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-01 17:13:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-01 17:13:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-01 17:13:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-01 17:13:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-01 17:13:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-01 17:13:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-01 17:13:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-01 17:13:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-01 17:13:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-01 17:13:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-01 17:13:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-01 17:13:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-01 17:13:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-01 17:13:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-01 17:13:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-01 17:13:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-01 17:13:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-01 17:13:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-01 17:13:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-01 17:13:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-01 17:13:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-01 17:13:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-01 17:13:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-01 17:13:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-01 17:13:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-01 17:13:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-01 17:13:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-01 17:13:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-01 17:13:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-01 17:13:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-01 17:13:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-01 17:13:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-01 17:13:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-01 17:13:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-01 17:13:26,964 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-01 17:13:26,964 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-01 17:13:26,964 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-01 17:13:26,964 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-01 17:13:26,964 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-01 17:13:26,964 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-01 17:13:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-01 17:13:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-01 17:13:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-01 17:13:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-01 17:13:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-01 17:13:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-01 17:13:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-01 17:13:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-01 17:13:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-01 17:13:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-01 17:13:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-01 17:13:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-01 17:13:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure cstrlen [2019-01-01 17:13:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-01 17:13:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-01 17:13:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-01 17:13:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-01 17:13:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-01 17:13:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-01 17:13:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 17:13:27,772 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 17:13:27,773 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2019-01-01 17:13:27,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:13:27 BoogieIcfgContainer [2019-01-01 17:13:27,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 17:13:27,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-01 17:13:27,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-01 17:13:27,778 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-01 17:13:27,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.01 05:13:26" (1/3) ... [2019-01-01 17:13:27,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331e2aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 05:13:27, skipping insertion in model container [2019-01-01 17:13:27,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:26" (2/3) ... [2019-01-01 17:13:27,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331e2aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 05:13:27, skipping insertion in model container [2019-01-01 17:13:27,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:13:27" (3/3) ... [2019-01-01 17:13:27,781 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i [2019-01-01 17:13:27,793 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-01 17:13:27,809 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-01-01 17:13:27,827 INFO L257 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-01-01 17:13:27,856 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 17:13:27,857 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-01 17:13:27,857 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-01 17:13:27,857 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-01 17:13:27,858 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 17:13:27,859 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 17:13:27,859 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-01 17:13:27,859 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 17:13:27,859 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-01 17:13:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-01-01 17:13:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-01 17:13:27,894 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:27,895 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:27,898 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-01 17:13:27,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:27,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1008915917, now seen corresponding path program 1 times [2019-01-01 17:13:27,914 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:27,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:27,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:27,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:27,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:28,098 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 17:13:28,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:28,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-01 17:13:28,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-01 17:13:28,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-01 17:13:28,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-01 17:13:28,122 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2019-01-01 17:13:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:28,217 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-01-01 17:13:28,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-01 17:13:28,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-01-01 17:13:28,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:28,231 INFO L225 Difference]: With dead ends: 26 [2019-01-01 17:13:28,231 INFO L226 Difference]: Without dead ends: 23 [2019-01-01 17:13:28,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:13:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-01-01 17:13:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-01-01 17:13:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-01 17:13:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-01-01 17:13:28,282 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2019-01-01 17:13:28,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:28,284 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-01-01 17:13:28,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-01 17:13:28,284 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-01-01 17:13:28,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-01 17:13:28,285 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:28,285 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:28,285 INFO L423 AbstractCegarLoop]: === Iteration 2 === [cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-01 17:13:28,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:28,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1008915916, now seen corresponding path program 1 times [2019-01-01 17:13:28,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:28,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:28,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:28,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:28,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:28,399 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 17:13:28,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:28,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-01 17:13:28,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-01 17:13:28,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-01 17:13:28,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-01 17:13:28,403 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2019-01-01 17:13:28,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:28,456 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-01-01 17:13:28,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-01 17:13:28,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-01-01 17:13:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:28,457 INFO L225 Difference]: With dead ends: 22 [2019-01-01 17:13:28,457 INFO L226 Difference]: Without dead ends: 22 [2019-01-01 17:13:28,458 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-01 17:13:28,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-01-01 17:13:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-01-01 17:13:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-01 17:13:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-01-01 17:13:28,463 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 9 [2019-01-01 17:13:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:28,464 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-01-01 17:13:28,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-01 17:13:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-01-01 17:13:28,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-01 17:13:28,465 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:28,465 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:28,465 INFO L423 AbstractCegarLoop]: === Iteration 3 === [cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-01 17:13:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:28,466 INFO L82 PathProgramCache]: Analyzing trace with hash -432933794, now seen corresponding path program 1 times [2019-01-01 17:13:28,466 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:28,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:28,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:28,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:28,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:28,543 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 17:13:28,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:28,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-01 17:13:28,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-01 17:13:28,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-01 17:13:28,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-01 17:13:28,546 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2019-01-01 17:13:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:28,778 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-01-01 17:13:28,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-01 17:13:28,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-01-01 17:13:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:28,779 INFO L225 Difference]: With dead ends: 21 [2019-01-01 17:13:28,779 INFO L226 Difference]: Without dead ends: 21 [2019-01-01 17:13:28,780 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-01 17:13:28,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-01-01 17:13:28,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-01-01 17:13:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-01-01 17:13:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-01-01 17:13:28,785 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12 [2019-01-01 17:13:28,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:28,786 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-01-01 17:13:28,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-01 17:13:28,786 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-01-01 17:13:28,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-01 17:13:28,787 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:28,787 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:28,787 INFO L423 AbstractCegarLoop]: === Iteration 4 === [cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-01 17:13:28,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:28,787 INFO L82 PathProgramCache]: Analyzing trace with hash -432933793, now seen corresponding path program 1 times [2019-01-01 17:13:28,788 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:28,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:28,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:28,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:28,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:28,972 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 17:13:28,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:28,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-01 17:13:28,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-01-01 17:13:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-01-01 17:13:28,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-01-01 17:13:28,974 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 7 states. [2019-01-01 17:13:29,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:29,069 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-01-01 17:13:29,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-01 17:13:29,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-01-01 17:13:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:29,074 INFO L225 Difference]: With dead ends: 27 [2019-01-01 17:13:29,074 INFO L226 Difference]: Without dead ends: 27 [2019-01-01 17:13:29,075 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-01-01 17:13:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-01-01 17:13:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-01-01 17:13:29,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-01 17:13:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-01-01 17:13:29,081 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2019-01-01 17:13:29,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:29,081 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-01-01 17:13:29,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-01-01 17:13:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-01-01 17:13:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-01-01 17:13:29,082 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:29,082 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:29,082 INFO L423 AbstractCegarLoop]: === Iteration 5 === [cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-01 17:13:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:29,083 INFO L82 PathProgramCache]: Analyzing trace with hash 256132890, now seen corresponding path program 1 times [2019-01-01 17:13:29,083 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:29,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:29,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:29,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:29,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:29,452 WARN L181 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 8 [2019-01-01 17:13:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:29,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:29,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-01-01 17:13:29,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-01-01 17:13:29,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-01-01 17:13:29,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-01-01 17:13:29,611 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2019-01-01 17:13:29,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:29,800 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2019-01-01 17:13:29,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-01 17:13:29,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-01-01 17:13:29,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:29,806 INFO L225 Difference]: With dead ends: 34 [2019-01-01 17:13:29,806 INFO L226 Difference]: Without dead ends: 34 [2019-01-01 17:13:29,806 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-01-01 17:13:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-01-01 17:13:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2019-01-01 17:13:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-01 17:13:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-01-01 17:13:29,815 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 15 [2019-01-01 17:13:29,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:29,815 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-01-01 17:13:29,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-01-01 17:13:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-01-01 17:13:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-01-01 17:13:29,816 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:29,816 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:29,817 INFO L423 AbstractCegarLoop]: === Iteration 6 === [cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-01 17:13:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash 936191260, now seen corresponding path program 1 times [2019-01-01 17:13:29,817 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:29,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:29,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:29,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:29,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:30,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-01 17:13:30,116 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-01 17:13:30,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:30,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 17:13:30,232 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 14 treesize of output 11 [2019-01-01 17:13:30,237 INFO L478 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 11 treesize of output 10 [2019-01-01 17:13:30,238 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-01 17:13:30,246 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-01 17:13:30,270 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-01-01 17:13:30,271 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2019-01-01 17:13:30,515 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 14 [2019-01-01 17:13:30,539 INFO L478 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 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2019-01-01 17:13:30,540 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-01-01 17:13:30,571 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-01-01 17:13:30,601 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-01-01 17:13:30,601 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2019-01-01 17:13:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:30,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-01 17:13:30,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2019-01-01 17:13:30,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-01-01 17:13:30,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-01-01 17:13:30,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2019-01-01 17:13:30,828 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 15 states. [2019-01-01 17:13:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:31,443 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2019-01-01 17:13:31,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-01-01 17:13:31,444 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2019-01-01 17:13:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:31,446 INFO L225 Difference]: With dead ends: 42 [2019-01-01 17:13:31,446 INFO L226 Difference]: Without dead ends: 42 [2019-01-01 17:13:31,449 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-01-01 17:13:31,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-01-01 17:13:31,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2019-01-01 17:13:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-01-01 17:13:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-01-01 17:13:31,461 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 15 [2019-01-01 17:13:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:31,461 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-01-01 17:13:31,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-01-01 17:13:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-01-01 17:13:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-01 17:13:31,462 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:31,464 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:31,464 INFO L423 AbstractCegarLoop]: === Iteration 7 === [cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-01 17:13:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:31,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1755122930, now seen corresponding path program 1 times [2019-01-01 17:13:31,465 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:31,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:31,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:31,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:31,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:31,556 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 17:13:31,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:31,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-01 17:13:31,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-01 17:13:31,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-01 17:13:31,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-01 17:13:31,558 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 4 states. [2019-01-01 17:13:31,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:31,623 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-01-01 17:13:31,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-01 17:13:31,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-01-01 17:13:31,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:31,625 INFO L225 Difference]: With dead ends: 33 [2019-01-01 17:13:31,625 INFO L226 Difference]: Without dead ends: 19 [2019-01-01 17:13:31,625 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-01 17:13:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-01-01 17:13:31,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-01-01 17:13:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-01-01 17:13:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-01-01 17:13:31,628 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 18 [2019-01-01 17:13:31,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:31,629 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-01-01 17:13:31,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-01 17:13:31,629 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-01-01 17:13:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-01 17:13:31,631 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:31,631 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:31,631 INFO L423 AbstractCegarLoop]: === Iteration 8 === [cstrlenErr1REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-01 17:13:31,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:31,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1443823299, now seen corresponding path program 2 times [2019-01-01 17:13:31,632 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:31,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:31,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:31,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:31,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:31,841 WARN L181 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2019-01-01 17:13:32,089 WARN L181 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 16 [2019-01-01 17:13:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:32,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-01 17:13:32,163 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-01 17:13:32,179 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-01-01 17:13:32,223 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-01-01 17:13:32,223 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-01 17:13:32,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 17:13:32,236 INFO L478 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 [2019-01-01 17:13:32,237 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-01 17:13:32,245 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-01 17:13:32,246 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-01-01 17:13:32,279 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 16 treesize of output 13 [2019-01-01 17:13:32,282 INFO L478 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 13 treesize of output 12 [2019-01-01 17:13:32,283 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-01 17:13:32,287 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-01 17:13:32,294 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-01 17:13:32,294 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-01-01 17:13:32,435 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 16 [2019-01-01 17:13:32,448 INFO L478 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 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2019-01-01 17:13:32,449 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-01-01 17:13:32,455 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-01-01 17:13:32,472 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-01-01 17:13:32,473 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:49 [2019-01-01 17:13:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:32,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-01 17:13:32,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2019-01-01 17:13:32,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-01-01 17:13:32,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-01-01 17:13:32,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2019-01-01 17:13:32,601 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 16 states. [2019-01-01 17:13:33,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:33,476 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-01-01 17:13:33,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-01-01 17:13:33,478 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2019-01-01 17:13:33,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:33,479 INFO L225 Difference]: With dead ends: 20 [2019-01-01 17:13:33,479 INFO L226 Difference]: Without dead ends: 0 [2019-01-01 17:13:33,479 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2019-01-01 17:13:33,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-01 17:13:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-01 17:13:33,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-01 17:13:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-01 17:13:33,481 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-01-01 17:13:33,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:33,482 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 17:13:33,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-01-01 17:13:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-01 17:13:33,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-01 17:13:33,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.01 05:13:33 BoogieIcfgContainer [2019-01-01 17:13:33,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-01 17:13:33,488 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 17:13:33,488 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 17:13:33,488 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 17:13:33,489 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:13:27" (3/4) ... [2019-01-01 17:13:33,492 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-01 17:13:33,498 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-01-01 17:13:33,498 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-01-01 17:13:33,499 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-01-01 17:13:33,499 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrlen [2019-01-01 17:13:33,499 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-01-01 17:13:33,503 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-01-01 17:13:33,503 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-01-01 17:13:33,503 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-01 17:13:33,549 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 17:13:33,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 17:13:33,551 INFO L168 Benchmark]: Toolchain (without parser) took 7448.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.5 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -154.9 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. [2019-01-01 17:13:33,552 INFO L168 Benchmark]: CDTParser took 0.72 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 17:13:33,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -154.5 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2019-01-01 17:13:33,554 INFO L168 Benchmark]: Boogie Preprocessor took 70.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 17:13:33,554 INFO L168 Benchmark]: RCFGBuilder took 914.54 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2019-01-01 17:13:33,555 INFO L168 Benchmark]: TraceAbstraction took 5713.58 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -40.2 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. [2019-01-01 17:13:33,556 INFO L168 Benchmark]: Witness Printer took 60.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 17:13:33,560 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 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 683.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -154.5 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 914.54 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5713.58 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -40.2 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. * Witness Printer took 60.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 554]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 554]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 5 error locations. SAFE Result, 5.6s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 130 SDtfs, 138 SDslu, 387 SDs, 0 SdLazy, 376 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 131 ConstructedInterpolants, 8 QuantifiedInterpolants, 12956 SizeOfPredicates, 14 NumberOfNonLiveVariables, 161 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 2/13 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...