./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 f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/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-f470102 [2019-11-28 20:03:58,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:03:58,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:03:58,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:03:58,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:03:58,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:03:58,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:03:58,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:03:58,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:03:58,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:03:58,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:03:58,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:03:58,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:03:58,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:03:58,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:03:58,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:03:58,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:03:58,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:03:58,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:03:58,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:03:58,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:03:58,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:03:58,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:03:58,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:03:58,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:03:58,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:03:58,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:03:58,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:03:58,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:03:58,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:03:58,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:03:58,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:03:58,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:03:58,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:03:58,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:03:58,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:03:58,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:03:58,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:03:58,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:03:58,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:03:58,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:03:58,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:03:58,353 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:03:58,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:03:58,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:03:58,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:03:58,361 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:03:58,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:03:58,361 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:03:58,362 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:03:58,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:03:58,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:03:58,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:03:58,363 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:03:58,363 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:03:58,364 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:03:58,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:03:58,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:03:58,365 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:03:58,365 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:03:58,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:03:58,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:03:58,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:03:58,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:03:58,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:03:58,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:03:58,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:03:58,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:03:58,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:03:58,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:03:58,369 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 [2019-11-28 20:03:58,705 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:03:58,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:03:58,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:03:58,733 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:03:58,734 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:03:58,735 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2019-11-28 20:03:58,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e426399/63a9ebb841f349e980928417157fe4fd/FLAGbdc2a3eee [2019-11-28 20:03:59,265 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:03:59,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2019-11-28 20:03:59,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e426399/63a9ebb841f349e980928417157fe4fd/FLAGbdc2a3eee [2019-11-28 20:03:59,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e426399/63a9ebb841f349e980928417157fe4fd [2019-11-28 20:03:59,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:03:59,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:03:59,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:03:59,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:03:59,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:03:59,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:03:59" (1/1) ... [2019-11-28 20:03:59,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d613c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59, skipping insertion in model container [2019-11-28 20:03:59,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:03:59" (1/1) ... [2019-11-28 20:03:59,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:03:59,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:03:59,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:03:59,855 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:03:59,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:03:59,889 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:03:59,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59 WrapperNode [2019-11-28 20:03:59,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:03:59,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:03:59,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:03:59,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:03:59,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59" (1/1) ... [2019-11-28 20:03:59,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59" (1/1) ... [2019-11-28 20:03:59,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59" (1/1) ... [2019-11-28 20:03:59,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59" (1/1) ... [2019-11-28 20:03:59,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59" (1/1) ... [2019-11-28 20:03:59,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59" (1/1) ... [2019-11-28 20:03:59,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59" (1/1) ... [2019-11-28 20:03:59,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:03:59,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:03:59,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:03:59,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:03:59,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:04:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:04:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:04:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrcat [2019-11-28 20:04:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:04:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure cstrcat [2019-11-28 20:04:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:04:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:04:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:04:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:04:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:04:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:04:00,260 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:04:00,261 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 20:04:00,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:00 BoogieIcfgContainer [2019-11-28 20:04:00,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:04:00,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:04:00,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:04:00,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:04:00,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:03:59" (1/3) ... [2019-11-28 20:04:00,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72779add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:00, skipping insertion in model container [2019-11-28 20:04:00,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:03:59" (2/3) ... [2019-11-28 20:04:00,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72779add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:00, skipping insertion in model container [2019-11-28 20:04:00,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:00" (3/3) ... [2019-11-28 20:04:00,284 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrcat_unsafe.c [2019-11-28 20:04:00,299 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:04:00,310 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-28 20:04:00,327 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-28 20:04:00,381 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:04:00,381 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:04:00,381 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:04:00,382 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:04:00,382 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:04:00,382 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:04:00,382 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:04:00,382 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:04:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-28 20:04:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:04:00,412 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:00,413 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:00,414 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cstrcatErr3REQUIRES_VIOLATION, cstrcatErr2REQUIRES_VIOLATION, cstrcatErr4REQUIRES_VIOLATION, cstrcatErr0REQUIRES_VIOLATION, cstrcatErr5REQUIRES_VIOLATION, cstrcatErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:00,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:00,419 INFO L82 PathProgramCache]: Analyzing trace with hash 543632158, now seen corresponding path program 1 times [2019-11-28 20:04:00,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:00,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587118534] [2019-11-28 20:04:00,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:04:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:04:00,542 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:04:00,542 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:04:00,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:04:00 BoogieIcfgContainer [2019-11-28 20:04:00,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:04:00,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:04:00,563 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:04:00,563 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:04:00,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:00" (3/4) ... [2019-11-28 20:04:00,566 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:04:00,606 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:04:00,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:04:00,609 INFO L168 Benchmark]: Toolchain (without parser) took 979.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -112.4 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:00,610 INFO L168 Benchmark]: CDTParser took 0.17 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 20:04:00,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.25 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:00,612 INFO L168 Benchmark]: Boogie Preprocessor took 82.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 950.9 MB in the beginning and 1.1 GB in the end (delta: -163.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:00,613 INFO L168 Benchmark]: RCFGBuilder took 289.99 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:00,614 INFO L168 Benchmark]: TraceAbstraction took 291.98 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:00,615 INFO L168 Benchmark]: Witness Printer took 43.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:00,619 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 260.25 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 950.9 MB in the beginning and 1.1 GB in the end (delta: -163.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 289.99 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 291.98 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Witness Printer took 43.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. 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={5:6}, s2={8:3}] [L3] char *s = s1; VAL [s={5:6}, s1={5:6}, s1={5:6}, s2={8:3}, s2={8:3}] [L5] \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 7 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...