./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/cstrncat_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 25bb35238109f4fc42bc09877cec45401fedd3ae .............................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:31:25,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:31:25,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:31:25,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:31:25,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:31:25,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:31:25,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:31:25,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:31:25,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:31:25,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:31:25,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:31:25,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:31:25,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:31:25,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:31:25,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:31:25,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:31:25,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:31:25,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:31:25,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:31:25,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:31:25,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:31:25,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:31:25,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:31:25,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:31:25,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:31:25,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:31:25,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:31:25,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:31:25,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:31:25,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:31:25,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:31:25,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:31:25,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:31:25,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:31:25,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:31:25,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:31:25,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:31:25,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:31:25,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:31:25,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:31:25,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:31:25,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:31:25,423 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:31:25,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:31:25,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:31:25,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:31:25,426 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:31:25,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:31:25,426 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:31:25,427 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:31:25,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:31:25,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:31:25,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:31:25,429 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:31:25,429 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:31:25,429 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:31:25,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:31:25,430 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:31:25,430 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:31:25,430 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:31:25,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:31:25,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:31:25,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:31:25,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:31:25,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:31:25,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:31:25,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:31:25,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:31:25,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:31:25,433 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 -> 25bb35238109f4fc42bc09877cec45401fedd3ae [2019-11-28 02:31:25,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:31:25,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:31:25,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:31:25,823 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:31:25,824 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:31:25,824 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2019-11-28 02:31:25,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b52268b37/ae0e306ce041476fae6020fc465ddefd/FLAG075b6e60e [2019-11-28 02:31:26,321 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:31:26,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2019-11-28 02:31:26,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b52268b37/ae0e306ce041476fae6020fc465ddefd/FLAG075b6e60e [2019-11-28 02:31:26,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b52268b37/ae0e306ce041476fae6020fc465ddefd [2019-11-28 02:31:26,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:31:26,729 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:31:26,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:31:26,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:31:26,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:31:26,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:26" (1/1) ... [2019-11-28 02:31:26,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550650fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:26, skipping insertion in model container [2019-11-28 02:31:26,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:26" (1/1) ... [2019-11-28 02:31:26,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:31:26,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:31:27,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:31:27,035 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:31:27,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:31:27,081 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:31:27,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:27 WrapperNode [2019-11-28 02:31:27,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:31:27,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:31:27,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:31:27,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:31:27,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:27" (1/1) ... [2019-11-28 02:31:27,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:27" (1/1) ... [2019-11-28 02:31:27,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:27" (1/1) ... [2019-11-28 02:31:27,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:27" (1/1) ... [2019-11-28 02:31:27,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:27" (1/1) ... [2019-11-28 02:31:27,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:27" (1/1) ... [2019-11-28 02:31:27,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:27" (1/1) ... [2019-11-28 02:31:27,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:31:27,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:31:27,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:31:27,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:31:27,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:31:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:31:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:31:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2019-11-28 02:31:27,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:31:27,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:31:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2019-11-28 02:31:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:31:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:31:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:31:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:31:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:31:27,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:31:27,628 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:31:27,628 INFO L297 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 02:31:27,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:27 BoogieIcfgContainer [2019-11-28 02:31:27,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:31:27,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:31:27,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:31:27,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:31:27,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:31:26" (1/3) ... [2019-11-28 02:31:27,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bd639b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:27, skipping insertion in model container [2019-11-28 02:31:27,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:27" (2/3) ... [2019-11-28 02:31:27,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bd639b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:27, skipping insertion in model container [2019-11-28 02:31:27,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:27" (3/3) ... [2019-11-28 02:31:27,645 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe.c [2019-11-28 02:31:27,656 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:31:27,664 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-11-28 02:31:27,679 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-11-28 02:31:27,704 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:31:27,705 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:31:27,708 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:31:27,709 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:31:27,709 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:31:27,709 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:31:27,709 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:31:27,710 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:31:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-28 02:31:27,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 02:31:27,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:31:27,739 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:31:27,739 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cstrncatErr0REQUIRES_VIOLATION, cstrncatErr5REQUIRES_VIOLATION, cstrncatErr7REQUIRES_VIOLATION, cstrncatErr6REQUIRES_VIOLATION, cstrncatErr1REQUIRES_VIOLATION, cstrncatErr8REQUIRES_VIOLATION, cstrncatErr3REQUIRES_VIOLATION, cstrncatErr2REQUIRES_VIOLATION, cstrncatErr4REQUIRES_VIOLATION, cstrncatErr9REQUIRES_VIOLATION]=== [2019-11-28 02:31:27,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:31:27,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1122182536, now seen corresponding path program 1 times [2019-11-28 02:31:27,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:31:27,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753048893] [2019-11-28 02:31:27,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:31:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:31:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:31:27,888 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:31:27,889 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:31:27,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:31:27 BoogieIcfgContainer [2019-11-28 02:31:27,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:31:27,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:31:27,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:31:27,914 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:31:27,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:27" (3/4) ... [2019-11-28 02:31:27,917 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:31:27,962 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:31:27,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:31:27,965 INFO L168 Benchmark]: Toolchain (without parser) took 1235.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -138.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:27,966 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:31:27,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.51 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:27,968 INFO L168 Benchmark]: Boogie Preprocessor took 126.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:27,969 INFO L168 Benchmark]: RCFGBuilder took 419.56 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: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:27,970 INFO L168 Benchmark]: TraceAbstraction took 278.47 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:31:27,971 INFO L168 Benchmark]: Witness Printer took 49.56 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. [2019-11-28 02:31:27,975 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 353.51 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 126.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 419.56 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: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 278.47 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * Witness Printer took 49.56 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: 7]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L24] char *s1; [L25] char *s2; [L26] int n = __VERIFIER_nondet_int(); [L27] CALL cstrncat(s1, s2, n) VAL [\old(n)=0, s1={6:5}, s2={7:2}] [L5] char *s = s1; VAL [\old(n)=0, n=0, s={6:5}, s1={6:5}, s1={6:5}, s2={7:2}, s2={7:2}] [L7] \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 11 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=38occurred 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...