./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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 0.1.25-8bd4bc6 [2020-07-29 00:48:21,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 00:48:21,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 00:48:21,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 00:48:21,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 00:48:21,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 00:48:21,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 00:48:21,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 00:48:21,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 00:48:21,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 00:48:21,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 00:48:21,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 00:48:21,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 00:48:21,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 00:48:21,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 00:48:21,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 00:48:21,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 00:48:21,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 00:48:21,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 00:48:21,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 00:48:21,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 00:48:21,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 00:48:21,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 00:48:21,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 00:48:21,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 00:48:21,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 00:48:21,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 00:48:21,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 00:48:21,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 00:48:21,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 00:48:21,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 00:48:21,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 00:48:21,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 00:48:21,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 00:48:21,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 00:48:21,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 00:48:21,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 00:48:21,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 00:48:21,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 00:48:21,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 00:48:21,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 00:48:21,907 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-07-29 00:48:21,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 00:48:21,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 00:48:21,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 00:48:21,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 00:48:21,934 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 00:48:21,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 00:48:21,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 00:48:21,935 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 00:48:21,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 00:48:21,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 00:48:21,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 00:48:21,937 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-07-29 00:48:21,937 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-07-29 00:48:21,937 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-07-29 00:48:21,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 00:48:21,938 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-07-29 00:48:21,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 00:48:21,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 00:48:21,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 00:48:21,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 00:48:21,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 00:48:21,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 00:48:21,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 00:48:21,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 00:48:21,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 00:48:21,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 00:48:21,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 00:48:21,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 00:48:21,942 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 [2020-07-29 00:48:22,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 00:48:22,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 00:48:22,352 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 00:48:22,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 00:48:22,354 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 00:48:22,355 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2020-07-29 00:48:22,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/becbb9b2c/cf5ceb9ccb3348d6888b8ffe0af8b430/FLAG44c9ff636 [2020-07-29 00:48:22,823 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 00:48:22,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2020-07-29 00:48:22,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/becbb9b2c/cf5ceb9ccb3348d6888b8ffe0af8b430/FLAG44c9ff636 [2020-07-29 00:48:23,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/becbb9b2c/cf5ceb9ccb3348d6888b8ffe0af8b430 [2020-07-29 00:48:23,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 00:48:23,243 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-07-29 00:48:23,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 00:48:23,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 00:48:23,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 00:48:23,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 12:48:23" (1/1) ... [2020-07-29 00:48:23,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82c6bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:48:23, skipping insertion in model container [2020-07-29 00:48:23,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 12:48:23" (1/1) ... [2020-07-29 00:48:23,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 00:48:23,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 00:48:23,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 00:48:23,503 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 00:48:23,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 00:48:23,538 INFO L208 MainTranslator]: Completed translation [2020-07-29 00:48:23,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:48:23 WrapperNode [2020-07-29 00:48:23,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 00:48:23,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 00:48:23,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 00:48:23,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 00:48:23,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:48:23" (1/1) ... [2020-07-29 00:48:23,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:48:23" (1/1) ... [2020-07-29 00:48:23,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:48:23" (1/1) ... [2020-07-29 00:48:23,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:48:23" (1/1) ... [2020-07-29 00:48:23,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:48:23" (1/1) ... [2020-07-29 00:48:23,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:48:23" (1/1) ... [2020-07-29 00:48:23,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:48:23" (1/1) ... [2020-07-29 00:48:23,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 00:48:23,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 00:48:23,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 00:48:23,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 00:48:23,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:48:23" (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 [2020-07-29 00:48:23,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-29 00:48:23,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 00:48:23,747 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2020-07-29 00:48:23,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-29 00:48:23,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-29 00:48:23,747 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2020-07-29 00:48:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-29 00:48:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-29 00:48:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-29 00:48:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-29 00:48:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 00:48:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-29 00:48:24,220 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 00:48:24,221 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-29 00:48:24,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 12:48:24 BoogieIcfgContainer [2020-07-29 00:48:24,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 00:48:24,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 00:48:24,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 00:48:24,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 00:48:24,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 12:48:23" (1/3) ... [2020-07-29 00:48:24,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248d43e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 12:48:24, skipping insertion in model container [2020-07-29 00:48:24,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 12:48:23" (2/3) ... [2020-07-29 00:48:24,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248d43e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 12:48:24, skipping insertion in model container [2020-07-29 00:48:24,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 12:48:24" (3/3) ... [2020-07-29 00:48:24,234 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe.c [2020-07-29 00:48:24,241 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 00:48:24,248 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-07-29 00:48:24,261 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-07-29 00:48:24,281 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 00:48:24,282 INFO L376 AbstractCegarLoop]: Hoare is false [2020-07-29 00:48:24,282 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 00:48:24,282 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 00:48:24,283 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 00:48:24,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 00:48:24,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 00:48:24,283 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 00:48:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-29 00:48:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-29 00:48:24,304 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 00:48:24,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 00:48:24,305 INFO L427 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]=== [2020-07-29 00:48:24,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 00:48:24,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1122182536, now seen corresponding path program 1 times [2020-07-29 00:48:24,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 00:48:24,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462581621] [2020-07-29 00:48:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 00:48:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 00:48:24,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 00:48:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 00:48:24,428 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 00:48:24,453 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 00:48:24,454 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-29 00:48:24,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 00:48:24,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.07 12:48:24 BoogieIcfgContainer [2020-07-29 00:48:24,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-29 00:48:24,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 00:48:24,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 00:48:24,483 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 00:48:24,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 12:48:24" (3/4) ... [2020-07-29 00:48:24,486 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-29 00:48:24,532 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 00:48:24,532 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 00:48:24,536 INFO L168 Benchmark]: Toolchain (without parser) took 1293.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 954.8 MB in the beginning and 1.1 GB in the end (delta: -125.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2020-07-29 00:48:24,536 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 00:48:24,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.47 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 00:48:24,538 INFO L168 Benchmark]: Boogie Preprocessor took 153.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-29 00:48:24,539 INFO L168 Benchmark]: RCFGBuilder took 532.28 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: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 11.5 GB. [2020-07-29 00:48:24,541 INFO L168 Benchmark]: TraceAbstraction took 255.19 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. [2020-07-29 00:48:24,541 INFO L168 Benchmark]: Witness Printer took 50.13 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. [2020-07-29 00:48:24,545 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 295.47 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 153.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 532.28 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: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 255.19 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 50.13 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)=-1, s1={6:5}, s2={7:2}] [L5] char *s = s1; VAL [\old(n)=-1, n=-1, 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. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...