./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/cstrncpy_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 41f0468d692f5518317d4661ccff168131d2a4eb ........................................................................................................................................................................................................................................ 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 0.1.25-9a8b2e8 [2020-10-20 05:48:50,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:48:50,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:48:50,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:48:50,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:48:50,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:48:50,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:48:50,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:48:50,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:48:50,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:48:50,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:48:50,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:48:50,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:48:50,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:48:50,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:48:50,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:48:50,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:48:50,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:48:50,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:48:50,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:48:50,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:48:50,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:48:50,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:48:50,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:48:50,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:48:50,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:48:50,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:48:50,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:48:50,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:48:50,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:48:50,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:48:50,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:48:50,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:48:50,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:48:50,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:48:50,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:48:50,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:48:50,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:48:50,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:48:50,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:48:50,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:48:50,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:48:50,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:48:50,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:48:50,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:48:50,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:48:50,555 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:48:50,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:48:50,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:48:50,555 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:48:50,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:48:50,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:48:50,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:48:50,556 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:48:50,557 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:48:50,558 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:48:50,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:48:50,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:48:50,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:48:50,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:48:50,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:48:50,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:48:50,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:48:50,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:48:50,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:48:50,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:48:50,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:48:50,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:48:50,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:48:50,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:48:50,562 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 -> 41f0468d692f5518317d4661ccff168131d2a4eb [2020-10-20 05:48:50,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:48:50,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:48:50,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:48:50,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:48:50,785 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:48:50,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2020-10-20 05:48:50,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b91f8068/cb41229b6c394d83afe7a1327abf5690/FLAGb8ae7a568 [2020-10-20 05:48:51,335 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:48:51,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2020-10-20 05:48:51,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b91f8068/cb41229b6c394d83afe7a1327abf5690/FLAGb8ae7a568 [2020-10-20 05:48:51,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b91f8068/cb41229b6c394d83afe7a1327abf5690 [2020-10-20 05:48:51,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:48:51,749 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:48:51,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:48:51,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:48:51,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:48:51,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:48:51" (1/1) ... [2020-10-20 05:48:51,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24541a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:51, skipping insertion in model container [2020-10-20 05:48:51,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:48:51" (1/1) ... [2020-10-20 05:48:51,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:48:51,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:48:52,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:48:52,047 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:48:52,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:48:52,084 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:48:52,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:52 WrapperNode [2020-10-20 05:48:52,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:48:52,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:48:52,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:48:52,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:48:52,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:52" (1/1) ... [2020-10-20 05:48:52,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:52" (1/1) ... [2020-10-20 05:48:52,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:52" (1/1) ... [2020-10-20 05:48:52,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:52" (1/1) ... [2020-10-20 05:48:52,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:52" (1/1) ... [2020-10-20 05:48:52,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:52" (1/1) ... [2020-10-20 05:48:52,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:52" (1/1) ... [2020-10-20 05:48:52,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:48:52,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:48:52,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:48:52,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:48:52,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:52" (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 [2020-10-20 05:48:52,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:48:52,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:48:52,180 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncpy [2020-10-20 05:48:52,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:48:52,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:48:52,180 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncpy [2020-10-20 05:48:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:48:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:48:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:48:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:48:52,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:48:52,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:48:52,434 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:48:52,435 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 05:48:52,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:48:52 BoogieIcfgContainer [2020-10-20 05:48:52,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:48:52,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:48:52,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:48:52,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:48:52,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:48:51" (1/3) ... [2020-10-20 05:48:52,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2b945a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:48:52, skipping insertion in model container [2020-10-20 05:48:52,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:52" (2/3) ... [2020-10-20 05:48:52,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2b945a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:48:52, skipping insertion in model container [2020-10-20 05:48:52,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:48:52" (3/3) ... [2020-10-20 05:48:52,450 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2020-10-20 05:48:52,467 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:48:52,476 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-20 05:48:52,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-20 05:48:52,521 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:48:52,522 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:48:52,522 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:48:52,522 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:48:52,523 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:48:52,523 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:48:52,523 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:48:52,524 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:48:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-20 05:48:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:48:52,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:52,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:52,554 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0REQUIRES_VIOLATION, cstrncpyErr5REQUIRES_VIOLATION, cstrncpyErr1REQUIRES_VIOLATION, cstrncpyErr3REQUIRES_VIOLATION, cstrncpyErr2REQUIRES_VIOLATION, cstrncpyErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:52,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:52,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1937036803, now seen corresponding path program 1 times [2020-10-20 05:48:52,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:52,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525981158] [2020-10-20 05:48:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:48:52,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:48:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:48:52,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:48:52,753 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 05:48:52,754 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:48:52,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:48:52,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:48:52 BoogieIcfgContainer [2020-10-20 05:48:52,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:48:52,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:48:52,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:48:52,777 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:48:52,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:48:52" (3/4) ... [2020-10-20 05:48:52,779 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 05:48:52,823 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:48:52,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:48:52,826 INFO L168 Benchmark]: Toolchain (without parser) took 1079.73 ms. Allocated memory was 35.1 MB in the beginning and 46.1 MB in the end (delta: 11.0 MB). Free memory was 13.7 MB in the beginning and 18.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 6.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:52,827 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory was 8.2 MB in the beginning and 8.1 MB in the end (delta: 43.5 kB). Peak memory consumption was 43.5 kB. Max. memory is 14.3 GB. [2020-10-20 05:48:52,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.27 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.8 MB in the beginning and 25.2 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:52,829 INFO L168 Benchmark]: Boogie Preprocessor took 37.33 ms. Allocated memory is still 44.0 MB. Free memory was 25.2 MB in the beginning and 23.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:52,830 INFO L168 Benchmark]: RCFGBuilder took 316.17 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 23.4 MB in the beginning and 19.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:52,831 INFO L168 Benchmark]: TraceAbstraction took 335.69 ms. Allocated memory is still 46.1 MB. Free memory was 19.3 MB in the beginning and 20.6 MB in the end (delta: -1.3 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 05:48:52,832 INFO L168 Benchmark]: Witness Printer took 47.16 ms. Allocated memory is still 46.1 MB. Free memory was 20.6 MB in the beginning and 18.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:52,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory was 8.2 MB in the beginning and 8.1 MB in the end (delta: 43.5 kB). Peak memory consumption was 43.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 334.27 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.8 MB in the beginning and 25.2 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 37.33 ms. Allocated memory is still 44.0 MB. Free memory was 25.2 MB in the beginning and 23.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 316.17 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 23.4 MB in the beginning and 19.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 335.69 ms. Allocated memory is still 46.1 MB. Free memory was 19.3 MB in the beginning and 20.6 MB in the end (delta: -1.3 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 47.16 ms. Allocated memory is still 46.1 MB. Free memory was 20.6 MB in the beginning and 18.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L27] char *s1; [L28] char *s2; [L29] int n = __VERIFIER_nondet_int(); [L30] CALL cstrncpy(s1, s2, n) VAL [\old(n)=1, s1={5:-1}, s2={2:-2}] [L5] char *dst = s1; [L6] const char *src = s2; [L7] char *us; [L8] int n2; VAL [\old(n)=1, dst={5:-1}, n=1, s1={5:-1}, s1={5:-1}, s2={2:-2}, s2={2:-2}, src={2:-2}] [L10] COND TRUE n > 0 [L11] n-- [L12] dst++ [L12] src++ - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 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=31occurred 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, 10 NumberOfCodeBlocks, 10 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...