./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c --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/cstrcat_unsafe.c -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 7cd6be6ad7a65db7d2c064e38ccfb241f9d252c5 ................................................................................................................................................................................................................................ 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 17:55:41,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:55:41,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:55:41,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:55:41,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:55:41,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:55:41,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:55:41,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:55:41,326 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 17:55:41,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:55:41,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:55:41,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:55:41,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:55:41,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:55:41,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:55:41,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:55:41,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:55:41,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:55:41,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:55:41,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:55:41,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:55:41,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:55:41,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:55:41,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:55:41,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:55:41,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:55:41,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:55:41,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:55:41,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:55:41,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:55:41,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:55:41,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:55:41,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:55:41,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:55:41,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:55:41,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:55:41,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:55:41,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:55:41,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:55:41,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 17:55:41,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:55:41,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:55:41,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:55:41,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:55:41,384 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:55:41,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:55:41,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:55:41,385 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:55:41,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:55:41,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:55:41,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:55:41,386 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:55:41,386 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:55:41,386 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:55:41,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:55:41,387 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:55:41,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:55:41,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:55:41,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:55:41,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:55:41,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:55:41,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:55:41,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:55:41,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:55:41,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:55:41,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 17:55:41,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 17:55:41,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:55:41,391 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 -> 7cd6be6ad7a65db7d2c064e38ccfb241f9d252c5 [2020-10-19 17:55:41,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:55:41,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:55:41,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:55:41,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:55:41,724 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:55:41,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2020-10-19 17:55:41,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9221fb3/b4752c6bf4d74dc88ce2c2602ea5eb24/FLAG3818e7e44 [2020-10-19 17:55:42,158 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:55:42,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2020-10-19 17:55:42,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9221fb3/b4752c6bf4d74dc88ce2c2602ea5eb24/FLAG3818e7e44 [2020-10-19 17:55:42,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9221fb3/b4752c6bf4d74dc88ce2c2602ea5eb24 [2020-10-19 17:55:42,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:55:42,533 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:55:42,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:55:42,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:55:42,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:55:42,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2345b03f 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 17:55:42,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:55:42,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:55:42,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:55:42,823 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:55:42,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:55:42,859 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:55:42,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42 WrapperNode [2020-10-19 17:55:42,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:55:42,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:55:42,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:55:42,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:55:42,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:55:42,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:55:42,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:55:42,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:55:42,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42" (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 17:55:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:55:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:55:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrcat [2020-10-19 17:55:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:55:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure cstrcat [2020-10-19 17:55:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 17:55:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 17:55:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:55:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:55:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:55:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:55:43,340 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:55:43,340 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 17:55:43,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:55:43 BoogieIcfgContainer [2020-10-19 17:55:43,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:55:43,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:55:43,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:55:43,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:55:43,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:55:42" (1/3) ... [2020-10-19 17:55:43,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459df83a 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 17:55:43,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42" (2/3) ... [2020-10-19 17:55:43,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459df83a 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 17:55:43,353 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 17:55:43,354 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrcat_unsafe.c [2020-10-19 17:55:43,368 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:55:43,376 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-19 17:55:43,395 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-19 17:55:43,433 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:55:43,437 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:55:43,437 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:55:43,437 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:55:43,438 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:55:43,438 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:55:43,438 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:55:43,440 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:55:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-19 17:55:43,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 17:55:43,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:43,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:43,474 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrcatErr3REQUIRES_VIOLATION, cstrcatErr2REQUIRES_VIOLATION, cstrcatErr4REQUIRES_VIOLATION, cstrcatErr0REQUIRES_VIOLATION, cstrcatErr5REQUIRES_VIOLATION, cstrcatErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:43,481 INFO L82 PathProgramCache]: Analyzing trace with hash 543632158, now seen corresponding path program 1 times [2020-10-19 17:55:43,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:43,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986053197] [2020-10-19 17:55:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 17:55:43,606 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 17:55:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 17:55:43,619 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 17:55:43,640 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 17:55:43,641 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 17:55:43,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 17:55:43,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 05:55:43 BoogieIcfgContainer [2020-10-19 17:55:43,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 17:55:43,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 17:55:43,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 17:55:43,667 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 17:55:43,668 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 17:55:43,670 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 17:55:43,713 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 17:55:43,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 17:55:43,717 INFO L168 Benchmark]: Toolchain (without parser) took 1187.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -135.5 MB). Peak memory consumption was 2.9 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:43,717 INFO L168 Benchmark]: CDTParser took 0.47 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 17:55:43,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.36 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 943.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:43,719 INFO L168 Benchmark]: Boogie Preprocessor took 111.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:43,720 INFO L168 Benchmark]: RCFGBuilder took 368.83 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: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:43,721 INFO L168 Benchmark]: TraceAbstraction took 322.32 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:43,722 INFO L168 Benchmark]: Witness Printer took 47.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:55:43,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 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 326.36 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 943.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 111.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 368.83 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: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 322.32 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * Witness Printer took 47.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L15] char *s1; [L16] char *s2; [L17] CALL cstrcat(s1, s2) VAL [s1={6:5}, s2={8:4}] [L3] char *s = s1; VAL [s={6:5}, s1={6:5}, s1={6:5}, s2={8:4}, s2={8:4}] [L5] \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...