./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.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 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-8bd4bc6 [2020-07-29 00:52:05,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 00:52:05,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 00:52:05,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 00:52:05,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 00:52:05,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 00:52:05,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 00:52:05,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 00:52:05,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 00:52:05,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 00:52:05,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 00:52:05,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 00:52:05,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 00:52:05,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 00:52:05,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 00:52:05,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 00:52:05,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 00:52:05,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 00:52:05,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 00:52:05,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 00:52:05,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 00:52:05,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 00:52:05,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 00:52:05,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 00:52:05,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 00:52:05,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 00:52:05,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 00:52:05,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 00:52:05,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 00:52:05,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 00:52:05,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 00:52:05,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 00:52:05,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 00:52:05,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 00:52:05,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 00:52:05,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 00:52:05,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 00:52:05,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 00:52:05,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 00:52:05,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 00:52:05,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 00:52:05,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-07-29 00:52:06,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 00:52:06,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 00:52:06,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 00:52:06,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 00:52:06,012 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 00:52:06,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 00:52:06,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 00:52:06,013 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 00:52:06,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 00:52:06,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 00:52:06,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 00:52:06,015 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-07-29 00:52:06,015 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-07-29 00:52:06,018 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-07-29 00:52:06,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 00:52:06,019 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-07-29 00:52:06,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 00:52:06,019 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 00:52:06,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 00:52:06,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 00:52:06,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 00:52:06,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 00:52:06,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 00:52:06,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 00:52:06,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 00:52:06,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 00:52:06,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 00:52:06,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 00:52:06,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 [2020-07-29 00:52:06,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 00:52:06,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 00:52:06,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 00:52:06,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 00:52:06,349 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 00:52:06,350 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2020-07-29 00:52:06,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723ad7a4d/d74d12f7124c40df9a2b8a623dfb0638/FLAG72003a00c [2020-07-29 00:52:06,955 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 00:52:06,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2020-07-29 00:52:06,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723ad7a4d/d74d12f7124c40df9a2b8a623dfb0638/FLAG72003a00c [2020-07-29 00:52:07,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723ad7a4d/d74d12f7124c40df9a2b8a623dfb0638 [2020-07-29 00:52:07,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 00:52:07,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-07-29 00:52:07,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 00:52:07,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 00:52:07,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 00:52:07,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 12:52:07" (1/1) ... [2020-07-29 00:52:07,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610d84f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:52:07, skipping insertion in model container [2020-07-29 00:52:07,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 12:52:07" (1/1) ... [2020-07-29 00:52:07,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 00:52:07,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 00:52:07,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 00:52:07,879 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 00:52:07,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 00:52:07,995 INFO L208 MainTranslator]: Completed translation [2020-07-29 00:52:07,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:52:07 WrapperNode [2020-07-29 00:52:07,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 00:52:07,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 00:52:07,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 00:52:07,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 00:52:08,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:52:07" (1/1) ... [2020-07-29 00:52:08,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:52:07" (1/1) ... [2020-07-29 00:52:08,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:52:07" (1/1) ... [2020-07-29 00:52:08,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:52:07" (1/1) ... [2020-07-29 00:52:08,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:52:07" (1/1) ... [2020-07-29 00:52:08,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:52:07" (1/1) ... [2020-07-29 00:52:08,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:52:07" (1/1) ... [2020-07-29 00:52:08,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 00:52:08,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 00:52:08,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 00:52:08,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 00:52:08,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:52:07" (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 [2020-07-29 00:52:08,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-29 00:52:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 00:52:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-29 00:52:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-29 00:52:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-29 00:52:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-29 00:52:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-29 00:52:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-29 00:52:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-29 00:52:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-29 00:52:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-29 00:52:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-29 00:52:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-29 00:52:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-29 00:52:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-29 00:52:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-29 00:52:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-29 00:52:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-29 00:52:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-29 00:52:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-29 00:52:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-29 00:52:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-29 00:52:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-29 00:52:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-29 00:52:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-29 00:52:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-29 00:52:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-29 00:52:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-29 00:52:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-29 00:52:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-29 00:52:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-29 00:52:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-29 00:52:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-29 00:52:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-29 00:52:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-29 00:52:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-29 00:52:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-29 00:52:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-29 00:52:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-29 00:52:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-29 00:52:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-29 00:52:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-29 00:52:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-29 00:52:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-29 00:52:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-29 00:52:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-29 00:52:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-29 00:52:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-29 00:52:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-29 00:52:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-29 00:52:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-29 00:52:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-29 00:52:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-29 00:52:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-29 00:52:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-29 00:52:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-29 00:52:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-29 00:52:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-29 00:52:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-29 00:52:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-29 00:52:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-29 00:52:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-29 00:52:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-29 00:52:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-29 00:52:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-29 00:52:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-29 00:52:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-29 00:52:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-29 00:52:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-29 00:52:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-29 00:52:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-29 00:52:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-29 00:52:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-29 00:52:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-29 00:52:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-29 00:52:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-29 00:52:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-29 00:52:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-29 00:52:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-29 00:52:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-29 00:52:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-29 00:52:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-29 00:52:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-29 00:52:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-29 00:52:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-29 00:52:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-29 00:52:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-29 00:52:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-29 00:52:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-29 00:52:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-29 00:52:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-29 00:52:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-29 00:52:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-29 00:52:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-29 00:52:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-29 00:52:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-29 00:52:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-29 00:52:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-29 00:52:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-29 00:52:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-29 00:52:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-29 00:52:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-29 00:52:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-29 00:52:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-29 00:52:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-29 00:52:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-29 00:52:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-29 00:52:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-29 00:52:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-29 00:52:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-29 00:52:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-29 00:52:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-29 00:52:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-29 00:52:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-29 00:52:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-29 00:52:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-29 00:52:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-29 00:52:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-29 00:52:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-29 00:52:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-29 00:52:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-29 00:52:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-29 00:52:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-29 00:52:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 00:52:08,953 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 00:52:08,953 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-29 00:52:08,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 12:52:08 BoogieIcfgContainer [2020-07-29 00:52:08,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 00:52:08,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 00:52:08,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 00:52:08,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 00:52:08,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 12:52:07" (1/3) ... [2020-07-29 00:52:08,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477a049a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 12:52:08, skipping insertion in model container [2020-07-29 00:52:08,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:52:07" (2/3) ... [2020-07-29 00:52:08,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477a049a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 12:52:08, skipping insertion in model container [2020-07-29 00:52:08,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 12:52:08" (3/3) ... [2020-07-29 00:52:08,967 INFO L109 eAbstractionObserver]: Analyzing ICFG reverse_array_unsafe.i [2020-07-29 00:52:08,978 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 00:52:08,985 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-07-29 00:52:08,999 INFO L251 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-07-29 00:52:09,015 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 00:52:09,015 INFO L376 AbstractCegarLoop]: Hoare is false [2020-07-29 00:52:09,015 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 00:52:09,015 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 00:52:09,016 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 00:52:09,017 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 00:52:09,017 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 00:52:09,017 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 00:52:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-07-29 00:52:09,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-29 00:52:09,041 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 00:52:09,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 00:52:09,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-07-29 00:52:09,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 00:52:09,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1096953401, now seen corresponding path program 1 times [2020-07-29 00:52:09,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 00:52:09,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090573625] [2020-07-29 00:52:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 00:52:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 00:52:09,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-07-29 00:52:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 00:52:09,352 INFO L280 TraceCheckUtils]: 0: Hoare triple {74#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {68#true} is VALID [2020-07-29 00:52:09,352 INFO L280 TraceCheckUtils]: 1: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-29 00:52:09,353 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {68#true} {68#true} #125#return; {68#true} is VALID [2020-07-29 00:52:09,358 INFO L263 TraceCheckUtils]: 0: Hoare triple {68#true} call ULTIMATE.init(); {74#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-29 00:52:09,358 INFO L280 TraceCheckUtils]: 1: Hoare triple {74#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {68#true} is VALID [2020-07-29 00:52:09,358 INFO L280 TraceCheckUtils]: 2: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-29 00:52:09,359 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {68#true} {68#true} #125#return; {68#true} is VALID [2020-07-29 00:52:09,359 INFO L263 TraceCheckUtils]: 4: Hoare triple {68#true} call #t~ret18 := main(); {68#true} is VALID [2020-07-29 00:52:09,360 INFO L280 TraceCheckUtils]: 5: Hoare triple {68#true} havoc ~i~0;havoc ~j~0;havoc ~tmp~0;assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;~length~0 := #t~nondet2;havoc #t~nondet2; {68#true} is VALID [2020-07-29 00:52:09,366 INFO L280 TraceCheckUtils]: 6: Hoare triple {68#true} assume ~length~0 < 1;~length~0 := 1; {73#(not (= main_~length~0 (* 2 (div main_~length~0 2))))} is VALID [2020-07-29 00:52:09,368 INFO L280 TraceCheckUtils]: 7: Hoare triple {73#(not (= main_~length~0 (* 2 (div main_~length~0 2))))} assume 0 == (if ~length~0 < 0 && 0 != ~length~0 % 2 then ~length~0 % 2 - 2 else ~length~0 % 2);#t~post3 := ~length~0;~length~0 := 1 + #t~post3;havoc #t~post3; {69#false} is VALID [2020-07-29 00:52:09,368 INFO L280 TraceCheckUtils]: 8: Hoare triple {69#false} call #t~malloc4.base, #t~malloc4.offset := #Ultimate.allocOnStack(~length~0);~arr~0.base, ~arr~0.offset := #t~malloc4.base, #t~malloc4.offset;~i~1 := 0; {69#false} is VALID [2020-07-29 00:52:09,369 INFO L280 TraceCheckUtils]: 9: Hoare triple {69#false} assume !!(~i~1 < ~length~0);assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647; {69#false} is VALID [2020-07-29 00:52:09,369 INFO L280 TraceCheckUtils]: 10: Hoare triple {69#false} assume !(4 + (~arr~0.offset + 4 * ~i~1) <= #length[~arr~0.base] && 0 <= ~arr~0.offset + 4 * ~i~1); {69#false} is VALID [2020-07-29 00:52:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 00:52:09,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090573625] [2020-07-29 00:52:09,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 00:52:09,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-29 00:52:09,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788732378] [2020-07-29 00:52:09,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-29 00:52:09,389 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 00:52:09,393 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 00:52:09,427 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 00:52:09,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-29 00:52:09,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 00:52:09,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-29 00:52:09,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-29 00:52:09,443 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-07-29 00:52:09,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 00:52:09,941 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-29 00:52:09,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-29 00:52:09,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-29 00:52:09,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 00:52:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 00:52:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2020-07-29 00:52:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 00:52:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2020-07-29 00:52:09,965 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 76 transitions. [2020-07-29 00:52:10,102 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 76 edges. 76 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 00:52:10,118 INFO L225 Difference]: With dead ends: 66 [2020-07-29 00:52:10,118 INFO L226 Difference]: Without dead ends: 63 [2020-07-29 00:52:10,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-29 00:52:10,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-29 00:52:10,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-07-29 00:52:10,159 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 00:52:10,159 INFO L82 GeneralOperation]: Start isEquivalent. First operand 63 states. Second operand 63 states. [2020-07-29 00:52:10,160 INFO L74 IsIncluded]: Start isIncluded. First operand 63 states. Second operand 63 states. [2020-07-29 00:52:10,160 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 63 states. [2020-07-29 00:52:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 00:52:10,168 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-07-29 00:52:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-07-29 00:52:10,169 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 00:52:10,170 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 00:52:10,170 INFO L74 IsIncluded]: Start isIncluded. First operand 63 states. Second operand 63 states. [2020-07-29 00:52:10,170 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 63 states. [2020-07-29 00:52:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 00:52:10,177 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-07-29 00:52:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-07-29 00:52:10,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 00:52:10,179 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 00:52:10,179 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 00:52:10,179 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 00:52:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-29 00:52:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-07-29 00:52:10,186 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 11 [2020-07-29 00:52:10,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 00:52:10,187 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-07-29 00:52:10,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-29 00:52:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-07-29 00:52:10,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-29 00:52:10,188 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 00:52:10,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 00:52:10,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 00:52:10,195 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr22ENSURES_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-07-29 00:52:10,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 00:52:10,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893819, now seen corresponding path program 1 times [2020-07-29 00:52:10,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 00:52:10,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119634513] [2020-07-29 00:52:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 00:52:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 00:52:10,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 00:52:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 00:52:10,289 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 00:52:10,314 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 00:52:10,315 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-29 00:52:10,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 00:52:10,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.07 12:52:10 BoogieIcfgContainer [2020-07-29 00:52:10,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-29 00:52:10,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 00:52:10,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 00:52:10,339 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 00:52:10,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 12:52:08" (3/4) ... [2020-07-29 00:52:10,342 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-29 00:52:10,388 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 00:52:10,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 00:52:10,391 INFO L168 Benchmark]: Toolchain (without parser) took 3104.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 960.2 MB in the beginning and 941.9 MB in the end (delta: 18.3 MB). Peak memory consumption was 166.7 MB. Max. memory is 11.5 GB. [2020-07-29 00:52:10,392 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 00:52:10,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2020-07-29 00:52:10,394 INFO L168 Benchmark]: Boogie Preprocessor took 69.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2020-07-29 00:52:10,394 INFO L168 Benchmark]: RCFGBuilder took 891.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 70.6 MB). Peak memory consumption was 70.6 MB. Max. memory is 11.5 GB. [2020-07-29 00:52:10,395 INFO L168 Benchmark]: TraceAbstraction took 1379.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 948.4 MB in the end (delta: 99.4 MB). Peak memory consumption was 99.4 MB. Max. memory is 11.5 GB. [2020-07-29 00:52:10,396 INFO L168 Benchmark]: Witness Printer took 49.04 ms. Allocated memory is still 1.2 GB. Free memory was 948.4 MB in the beginning and 941.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2020-07-29 00:52:10,400 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 708.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 69.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 891.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 70.6 MB). Peak memory consumption was 70.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1379.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 948.4 MB in the end (delta: 99.4 MB). Peak memory consumption was 99.4 MB. Max. memory is 11.5 GB. * Witness Printer took 49.04 ms. Allocated memory is still 1.2 GB. Free memory was 948.4 MB in the beginning and 941.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L518] COND FALSE !(length % 2 == 0) VAL [length=1] [L519] int *arr = __builtin_alloca (length); [L520] int i = 0; VAL [__builtin_alloca (length)={2:0}, arr={2:0}, i=0, length=1] [L520] COND TRUE i < length [L522] arr[i] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 80 locations, 23 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 65 SDslu, 9 SDs, 0 SdLazy, 73 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 260 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...