./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-f470102 [2019-11-28 20:05:51,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:05:51,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:05:51,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:05:51,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:05:51,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:05:51,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:05:51,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:05:51,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:05:51,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:05:51,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:05:51,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:05:51,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:05:51,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:05:51,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:05:51,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:05:51,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:05:51,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:05:51,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:05:51,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:05:51,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:05:51,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:05:51,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:05:51,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:05:51,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:05:51,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:05:51,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:05:51,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:05:51,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:05:51,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:05:51,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:05:51,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:05:51,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:05:51,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:05:51,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:05:51,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:05:51,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:05:51,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:05:51,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:05:51,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:05:51,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:05:51,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:05:51,165 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:05:51,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:05:51,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:05:51,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:05:51,167 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:05:51,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:05:51,168 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:05:51,168 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:05:51,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:05:51,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:05:51,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:05:51,170 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:05:51,171 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:05:51,171 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:05:51,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:05:51,172 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:05:51,172 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:05:51,172 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:05:51,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:05:51,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:05:51,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:05:51,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:05:51,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:05:51,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:05:51,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:05:51,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:05:51,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:05:51,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:05:51,176 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 [2019-11-28 20:05:51,464 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:05:51,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:05:51,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:05:51,483 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:05:51,484 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:05:51,485 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2019-11-28 20:05:51,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd49f2c2e/21d79064d3ef4837950760f11c7d11c1/FLAGc5b3e4439 [2019-11-28 20:05:52,101 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:05:52,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2019-11-28 20:05:52,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd49f2c2e/21d79064d3ef4837950760f11c7d11c1/FLAGc5b3e4439 [2019-11-28 20:05:52,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd49f2c2e/21d79064d3ef4837950760f11c7d11c1 [2019-11-28 20:05:52,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:05:52,428 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:05:52,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:05:52,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:05:52,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:05:52,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:05:52" (1/1) ... [2019-11-28 20:05:52,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7261e065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:52, skipping insertion in model container [2019-11-28 20:05:52,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:05:52" (1/1) ... [2019-11-28 20:05:52,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:05:52,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:05:52,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:05:52,976 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:05:53,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:05:53,099 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:05:53,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:53 WrapperNode [2019-11-28 20:05:53,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:05:53,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:05:53,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:05:53,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:05:53,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:53" (1/1) ... [2019-11-28 20:05:53,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:53" (1/1) ... [2019-11-28 20:05:53,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:53" (1/1) ... [2019-11-28 20:05:53,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:53" (1/1) ... [2019-11-28 20:05:53,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:53" (1/1) ... [2019-11-28 20:05:53,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:53" (1/1) ... [2019-11-28 20:05:53,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:53" (1/1) ... [2019-11-28 20:05:53,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:05:53,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:05:53,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:05:53,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:05:53,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:05:53,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:05:53,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:05:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:05:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:05:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:05:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:05:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:05:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:05:53,263 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:05:53,263 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:05:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:05:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:05:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:05:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:05:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:05:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:05:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:05:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:05:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:05:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:05:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:05:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:05:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:05:53,267 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:05:53,267 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:05:53,267 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:05:53,267 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:05:53,267 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:05:53,268 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:05:53,268 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:05:53,268 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:05:53,268 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:05:53,269 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:05:53,269 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:05:53,269 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:05:53,269 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:05:53,270 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:05:53,270 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:05:53,270 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:05:53,270 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:05:53,271 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:05:53,271 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:05:53,271 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:05:53,271 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:05:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:05:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:05:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:05:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:05:53,273 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:05:53,273 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:05:53,273 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:05:53,273 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:05:53,274 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:05:53,274 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:05:53,274 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:05:53,274 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:05:53,274 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:05:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:05:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:05:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:05:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:05:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:05:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:05:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:05:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:05:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:05:53,277 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:05:53,277 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:05:53,277 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:05:53,277 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:05:53,278 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:05:53,278 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:05:53,278 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:05:53,278 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:05:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:05:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:05:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:05:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:05:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:05:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:05:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:05:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:05:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:05:53,281 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:05:53,281 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:05:53,281 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:05:53,281 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:05:53,281 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:05:53,282 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:05:53,282 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:05:53,282 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:05:53,282 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:05:53,282 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:05:53,283 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:05:53,283 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:05:53,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:05:53,283 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:05:53,284 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:05:53,284 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:05:53,284 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:05:53,284 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:05:53,284 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:05:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:05:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:05:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:05:53,285 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:05:53,286 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:05:53,286 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:05:53,286 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:05:53,286 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:05:53,286 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:05:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:05:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:05:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:05:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:05:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:05:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-28 20:05:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:05:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 20:05:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:05:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:05:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:05:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:05:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:05:54,012 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:05:54,013 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-28 20:05:54,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:05:54 BoogieIcfgContainer [2019-11-28 20:05:54,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:05:54,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:05:54,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:05:54,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:05:54,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:05:52" (1/3) ... [2019-11-28 20:05:54,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31064bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:05:54, skipping insertion in model container [2019-11-28 20:05:54,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:05:53" (2/3) ... [2019-11-28 20:05:54,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31064bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:05:54, skipping insertion in model container [2019-11-28 20:05:54,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:05:54" (3/3) ... [2019-11-28 20:05:54,025 INFO L109 eAbstractionObserver]: Analyzing ICFG reverse_array_unsafe.i [2019-11-28 20:05:54,037 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:05:54,048 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2019-11-28 20:05:54,065 INFO L249 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2019-11-28 20:05:54,100 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:05:54,100 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:05:54,100 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:05:54,101 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:05:54,102 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:05:54,102 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:05:54,103 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:05:54,103 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:05:54,126 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2019-11-28 20:05:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:05:54,138 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:54,139 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:54,139 INFO L410 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]=== [2019-11-28 20:05:54,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:54,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1096953401, now seen corresponding path program 1 times [2019-11-28 20:05:54,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:54,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894506207] [2019-11-28 20:05:54,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:54,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894506207] [2019-11-28 20:05:54,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:54,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:05:54,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451553814] [2019-11-28 20:05:54,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:05:54,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:54,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:05:54,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:05:54,475 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2019-11-28 20:05:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:54,706 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2019-11-28 20:05:54,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:05:54,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 20:05:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:54,725 INFO L225 Difference]: With dead ends: 66 [2019-11-28 20:05:54,725 INFO L226 Difference]: Without dead ends: 63 [2019-11-28 20:05:54,731 INFO L630 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 [2019-11-28 20:05:54,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-28 20:05:54,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-28 20:05:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-28 20:05:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2019-11-28 20:05:54,794 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 11 [2019-11-28 20:05:54,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:54,794 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2019-11-28 20:05:54,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:05:54,795 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2019-11-28 20:05:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:05:54,796 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:54,797 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:54,797 INFO L410 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]=== [2019-11-28 20:05:54,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:54,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893819, now seen corresponding path program 1 times [2019-11-28 20:05:54,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:54,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908815620] [2019-11-28 20:05:54,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:05:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:05:54,922 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:05:54,922 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:05:54,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:05:54 BoogieIcfgContainer [2019-11-28 20:05:54,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:05:54,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:05:54,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:05:54,945 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:05:54,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:05:54" (3/4) ... [2019-11-28 20:05:54,948 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:05:54,989 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:05:54,989 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:05:54,991 INFO L168 Benchmark]: Toolchain (without parser) took 2562.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -75.3 MB). Peak memory consumption was 82.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:54,992 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:05:54,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:54,994 INFO L168 Benchmark]: Boogie Preprocessor took 94.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:54,995 INFO L168 Benchmark]: RCFGBuilder took 818.63 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: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:54,995 INFO L168 Benchmark]: TraceAbstraction took 928.38 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: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:54,996 INFO L168 Benchmark]: Witness Printer took 44.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:05:55,000 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 672.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 94.03 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 818.63 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: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 928.38 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: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. * Witness Printer took 44.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. 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. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...