./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/count_down_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30f4e4ab 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/count_down_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 744113fc2ef40828e0832f07c1176e726449b166 ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:31:13,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:31:13,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:31:13,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:31:13,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:31:13,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:31:13,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:31:13,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:31:13,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:31:13,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:31:13,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:31:13,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:31:13,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:31:13,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:31:13,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:31:13,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:31:13,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:31:13,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:31:13,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:31:13,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:31:13,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:31:13,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:31:13,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:31:13,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:31:13,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:31:13,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:31:13,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:31:13,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:31:13,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:31:13,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:31:13,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:31:13,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:31:13,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:31:13,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:31:13,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:31:13,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:31:13,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:31:13,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:31:13,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:31:13,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:31:13,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:31:13,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:31:13,333 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:31:13,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:31:13,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:31:13,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:31:13,336 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:31:13,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:31:13,336 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:31:13,337 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:31:13,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:31:13,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:31:13,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:31:13,338 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:31:13,338 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:31:13,338 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:31:13,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:31:13,339 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:31:13,339 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:31:13,339 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:31:13,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:31:13,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:31:13,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:31:13,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:31:13,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:31:13,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:31:13,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:31:13,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:31:13,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:31:13,343 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 -> 744113fc2ef40828e0832f07c1176e726449b166 [2019-11-28 02:31:13,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:31:13,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:31:13,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:31:13,672 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:31:13,673 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:31:13,674 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2019-11-28 02:31:13,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8590f6f1d/7a8b2f812a084917a43b83ccd41ec213/FLAG490b4318a [2019-11-28 02:31:14,292 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:31:14,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2019-11-28 02:31:14,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8590f6f1d/7a8b2f812a084917a43b83ccd41ec213/FLAG490b4318a [2019-11-28 02:31:14,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8590f6f1d/7a8b2f812a084917a43b83ccd41ec213 [2019-11-28 02:31:14,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:31:14,606 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:31:14,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:31:14,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:31:14,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:31:14,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:14" (1/1) ... [2019-11-28 02:31:14,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b00476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:14, skipping insertion in model container [2019-11-28 02:31:14,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:14" (1/1) ... [2019-11-28 02:31:14,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:31:14,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:31:15,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:31:15,084 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:31:15,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:31:15,180 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:31:15,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15 WrapperNode [2019-11-28 02:31:15,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:31:15,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:31:15,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:31:15,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:31:15,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (1/1) ... [2019-11-28 02:31:15,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:31:15,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:31:15,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:31:15,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:31:15,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (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 02:31:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:31:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:31:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:31:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:31:15,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:31:15,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:31:15,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:31:15,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:31:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:31:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:31:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:31:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:31:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:31:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:31:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:31:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:31:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:31:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:31:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:31:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:31:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:31:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:31:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:31:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:31:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:31:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:31:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:31:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:31:15,317 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:31:15,317 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:31:15,317 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:31:15,317 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:31:15,317 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:31:15,318 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:31:15,318 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:31:15,318 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:31:15,318 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:31:15,319 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:31:15,319 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:31:15,319 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:31:15,319 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:31:15,319 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:31:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:31:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:31:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:31:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:31:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:31:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:31:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:31:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:31:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:31:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:31:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:31:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:31:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:31:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:31:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:31:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:31:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:31:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:31:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:31:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:31:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:31:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:31:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:31:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:31:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:31:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:31:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:31:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:31:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:31:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:31:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:31:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:31:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:31:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:31:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:31:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:31:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:31:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:31:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:31:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:31:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:31:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:31:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:31:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:31:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:31:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:31:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:31:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:31:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:31:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:31:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:31:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:31:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:31:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:31:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:31:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:31:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:31:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:31:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:31:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:31:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:31:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:31:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:31:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:31:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:31:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:31:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:31:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:31:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:31:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:31:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:31:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:31:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:31:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:31:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:31:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 02:31:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:31:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:31:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:31:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:31:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:31:15,820 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:31:15,821 INFO L297 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-28 02:31:15,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:15 BoogieIcfgContainer [2019-11-28 02:31:15,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:31:15,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:31:15,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:31:15,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:31:15,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:31:14" (1/3) ... [2019-11-28 02:31:15,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2e6ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:15, skipping insertion in model container [2019-11-28 02:31:15,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:15" (2/3) ... [2019-11-28 02:31:15,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2e6ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:15, skipping insertion in model container [2019-11-28 02:31:15,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:15" (3/3) ... [2019-11-28 02:31:15,832 INFO L109 eAbstractionObserver]: Analyzing ICFG count_down_unsafe.i [2019-11-28 02:31:15,843 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:31:15,850 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-11-28 02:31:15,864 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-11-28 02:31:15,886 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:31:15,886 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:31:15,886 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:31:15,887 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:31:15,887 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:31:15,888 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:31:15,888 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:31:15,888 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:31:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-28 02:31:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:31:15,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:15,918 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:15,919 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:15,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:15,926 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2019-11-28 02:31:15,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:15,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50573771] [2019-11-28 02:31:15,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:16,150 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 02:31:16,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50573771] [2019-11-28 02:31:16,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:16,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:31:16,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288459090] [2019-11-28 02:31:16,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:31:16,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:16,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:31:16,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:31:16,191 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-11-28 02:31:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:16,375 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-11-28 02:31:16,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:31:16,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 02:31:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:16,391 INFO L225 Difference]: With dead ends: 36 [2019-11-28 02:31:16,391 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 02:31:16,395 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 02:31:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 02:31:16,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-28 02:31:16,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-28 02:31:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-28 02:31:16,447 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2019-11-28 02:31:16,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:16,447 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-28 02:31:16,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:31:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-28 02:31:16,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:31:16,449 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:16,449 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:16,450 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:16,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:16,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2019-11-28 02:31:16,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:16,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9771849] [2019-11-28 02:31:16,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:31:16,589 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 02:31:16,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9771849] [2019-11-28 02:31:16,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:31:16,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:31:16,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809618277] [2019-11-28 02:31:16,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:31:16,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:31:16,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:31:16,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:31:16,598 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2019-11-28 02:31:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:31:16,714 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-11-28 02:31:16,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:31:16,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 02:31:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:31:16,717 INFO L225 Difference]: With dead ends: 29 [2019-11-28 02:31:16,719 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 02:31:16,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:31:16,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 02:31:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 02:31:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 02:31:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-11-28 02:31:16,729 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2019-11-28 02:31:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:31:16,731 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-11-28 02:31:16,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:31:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-11-28 02:31:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:31:16,732 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:16,732 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:16,733 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 02:31:16,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:16,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2019-11-28 02:31:16,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:16,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627979990] [2019-11-28 02:31:16,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:31:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:31:16,846 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:31:16,846 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:31:16,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:31:16 BoogieIcfgContainer [2019-11-28 02:31:16,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:31:16,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:31:16,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:31:16,872 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:31:16,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:15" (3/4) ... [2019-11-28 02:31:16,876 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:31:16,920 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:31:16,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:31:16,923 INFO L168 Benchmark]: Toolchain (without parser) took 2316.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -66.2 MB). Peak memory consumption was 80.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:16,924 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:31:16,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 574.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -177.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:16,926 INFO L168 Benchmark]: Boogie Preprocessor took 65.48 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: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:16,927 INFO L168 Benchmark]: RCFGBuilder took 574.48 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: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:16,928 INFO L168 Benchmark]: TraceAbstraction took 1048.04 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: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:16,929 INFO L168 Benchmark]: Witness Printer took 48.84 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 02:31:16,933 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 574.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -177.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.48 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: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 574.48 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: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1048.04 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: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 11.5 GB. * Witness Printer took 48.84 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: 524]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int val; [L515] int length = __VERIFIER_nondet_int(); [L516] COND TRUE length < 1 [L516] length = 1 VAL [length=1] [L517] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={2:0}, arr={2:0}, length=1] [L518] COND FALSE !(!arr) [L519] i=0 VAL [__builtin_alloca (length)={2:0}, arr={2:0}, i=0, length=1] [L519] COND TRUE i