./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 906a4fb5 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 0.1.25-906a4fb [2020-10-19 17:55:41,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:55:41,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:55:41,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:55:41,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:55:41,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:55:41,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:55:41,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:55:41,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:55:41,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:55:41,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:55:41,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:55:41,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:55:41,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:55:41,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:55:41,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:55:41,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:55:41,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:55:41,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:55:41,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:55:41,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:55:41,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:55:41,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:55:41,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:55:41,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:55:41,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:55:41,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:55:41,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:55:41,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:55:41,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:55:41,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:55:41,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:55:41,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:55:41,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:55:41,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:55:41,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:55:41,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:55:41,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:55:41,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:55:41,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:55:41,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:55:41,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 17:55:41,396 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:55:41,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:55:41,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:55:41,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:55:41,398 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:55:41,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:55:41,399 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:55:41,399 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:55:41,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:55:41,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:55:41,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:55:41,400 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:55:41,400 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:55:41,401 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:55:41,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:55:41,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:55:41,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:55:41,402 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:55:41,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:55:41,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:55:41,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:55:41,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:55:41,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:55:41,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:55:41,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:55:41,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 17:55:41,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 17:55:41,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:55:41,405 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 [2020-10-19 17:55:41,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:55:41,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:55:41,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:55:41,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:55:41,749 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:55:41,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2020-10-19 17:55:41,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8732dde4e/595ad87c06f14d13bc0a1e9fc0045eb0/FLAG4e3229d89 [2020-10-19 17:55:42,371 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:55:42,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2020-10-19 17:55:42,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8732dde4e/595ad87c06f14d13bc0a1e9fc0045eb0/FLAG4e3229d89 [2020-10-19 17:55:42,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8732dde4e/595ad87c06f14d13bc0a1e9fc0045eb0 [2020-10-19 17:55:42,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:55:42,665 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:55:42,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:55:42,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:55:42,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:55:42,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea562fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42, skipping insertion in model container [2020-10-19 17:55:42,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:55:42,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:55:43,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:55:43,113 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:55:43,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:55:43,247 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:55:43,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43 WrapperNode [2020-10-19 17:55:43,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:55:43,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:55:43,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:55:43,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:55:43,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:55:43,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:55:43,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:55:43,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:55:43,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:55:43,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:55:43,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:55:43,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 17:55:43,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 17:55:43,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 17:55:43,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 17:55:43,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 17:55:43,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:55:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 17:55:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 17:55:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 17:55:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 17:55:43,387 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 17:55:43,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 17:55:43,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 17:55:43,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 17:55:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 17:55:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 17:55:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 17:55:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 17:55:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 17:55:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 17:55:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 17:55:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 17:55:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 17:55:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 17:55:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 17:55:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 17:55:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 17:55:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 17:55:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 17:55:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 17:55:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 17:55:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 17:55:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 17:55:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 17:55:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 17:55:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 17:55:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 17:55:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 17:55:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 17:55:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 17:55:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 17:55:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 17:55:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 17:55:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 17:55:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 17:55:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 17:55:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 17:55:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 17:55:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 17:55:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 17:55:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 17:55:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 17:55:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 17:55:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 17:55:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 17:55:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 17:55:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 17:55:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 17:55:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 17:55:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 17:55:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 17:55:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 17:55:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 17:55:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 17:55:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 17:55:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 17:55:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 17:55:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 17:55:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 17:55:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 17:55:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 17:55:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 17:55:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 17:55:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 17:55:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 17:55:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 17:55:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 17:55:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 17:55:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 17:55:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 17:55:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 17:55:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 17:55:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 17:55:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 17:55:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 17:55:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 17:55:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 17:55:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 17:55:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 17:55:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 17:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 17:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 17:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 17:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 17:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 17:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 17:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 17:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 17:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 17:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 17:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 17:55:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 17:55:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 17:55:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 17:55:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 17:55:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 17:55:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 17:55:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 17:55:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 17:55:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 17:55:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 17:55:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 17:55:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 17:55:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 17:55:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:55:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 17:55:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:55:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 17:55:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 17:55:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:55:43,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:55:43,912 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:55:43,913 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-19 17:55:43,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:55:43 BoogieIcfgContainer [2020-10-19 17:55:43,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:55:43,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:55:43,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:55:43,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:55:43,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:55:42" (1/3) ... [2020-10-19 17:55:43,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b387f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:55:43, skipping insertion in model container [2020-10-19 17:55:43,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (2/3) ... [2020-10-19 17:55:43,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b387f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:55:43, skipping insertion in model container [2020-10-19 17:55:43,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:55:43" (3/3) ... [2020-10-19 17:55:43,925 INFO L111 eAbstractionObserver]: Analyzing ICFG count_down_unsafe.i [2020-10-19 17:55:43,938 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:55:43,946 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-10-19 17:55:43,961 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-19 17:55:43,985 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:55:43,986 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:55:43,986 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:55:43,986 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:55:43,987 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:55:43,997 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:55:43,998 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:55:43,998 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:55:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-19 17:55:44,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 17:55:44,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:44,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:44,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:44,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:44,046 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2020-10-19 17:55:44,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:44,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043896984] [2020-10-19 17:55:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:44,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:44,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043896984] [2020-10-19 17:55:44,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:44,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:55:44,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238227374] [2020-10-19 17:55:44,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 17:55:44,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:44,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 17:55:44,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:55:44,302 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-10-19 17:55:44,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:44,450 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-19 17:55:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:55:44,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 17:55:44,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:44,465 INFO L225 Difference]: With dead ends: 36 [2020-10-19 17:55:44,466 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 17:55:44,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:55:44,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 17:55:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-19 17:55:44,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-19 17:55:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-19 17:55:44,518 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2020-10-19 17:55:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:44,519 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-19 17:55:44,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 17:55:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-19 17:55:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 17:55:44,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:44,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:44,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 17:55:44,522 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:44,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:44,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2020-10-19 17:55:44,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:44,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952418485] [2020-10-19 17:55:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:44,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952418485] [2020-10-19 17:55:44,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:44,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 17:55:44,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145678268] [2020-10-19 17:55:44,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 17:55:44,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:44,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 17:55:44,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:55:44,627 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-19 17:55:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:44,738 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-10-19 17:55:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 17:55:44,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-19 17:55:44,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:44,741 INFO L225 Difference]: With dead ends: 29 [2020-10-19 17:55:44,741 INFO L226 Difference]: Without dead ends: 29 [2020-10-19 17:55:44,742 INFO L677 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 [2020-10-19 17:55:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-19 17:55:44,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-19 17:55:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 17:55:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-19 17:55:44,749 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2020-10-19 17:55:44,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:44,750 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-19 17:55:44,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 17:55:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-19 17:55:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 17:55:44,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:44,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:44,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 17:55:44,752 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:44,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:44,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2020-10-19 17:55:44,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:44,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628466747] [2020-10-19 17:55:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 17:55:44,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 17:55:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 17:55:44,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 17:55:44,817 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 17:55:44,817 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 17:55:44,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 17:55:44,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 05:55:44 BoogieIcfgContainer [2020-10-19 17:55:44,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 17:55:44,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 17:55:44,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 17:55:44,864 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 17:55:44,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:55:43" (3/4) ... [2020-10-19 17:55:44,869 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 17:55:44,922 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 17:55:44,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 17:55:44,931 INFO L168 Benchmark]: Toolchain (without parser) took 2265.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 960.0 MB in the beginning and 1.0 GB in the end (delta: -61.1 MB). Peak memory consumption was 83.6 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:44,933 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:55:44,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 582.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:44,935 INFO L168 Benchmark]: Boogie Preprocessor took 65.74 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. [2020-10-19 17:55:44,936 INFO L168 Benchmark]: RCFGBuilder took 599.93 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: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:44,940 INFO L168 Benchmark]: TraceAbstraction took 946.80 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. [2020-10-19 17:55:44,941 INFO L168 Benchmark]: Witness Printer took 59.19 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. [2020-10-19 17:55:44,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 582.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.74 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 599.93 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: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 946.80 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 59.19 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