java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv --cacsl2boogietranslator.bitprecise.bitfields false -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncat_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-408c70d-m [2018-04-12 19:45:14,191 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-12 19:45:14,193 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-12 19:45:14,206 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-12 19:45:14,206 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-12 19:45:14,207 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-12 19:45:14,207 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-12 19:45:14,209 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-12 19:45:14,211 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-12 19:45:14,211 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-12 19:45:14,212 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-12 19:45:14,212 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-12 19:45:14,213 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-12 19:45:14,214 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-12 19:45:14,215 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-12 19:45:14,217 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-12 19:45:14,219 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-12 19:45:14,220 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-12 19:45:14,221 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-12 19:45:14,222 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-12 19:45:14,224 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-12 19:45:14,224 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-12 19:45:14,224 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-12 19:45:14,225 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-12 19:45:14,226 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-12 19:45:14,227 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-12 19:45:14,227 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-12 19:45:14,227 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-12 19:45:14,228 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-12 19:45:14,228 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-12 19:45:14,229 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-12 19:45:14,229 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf [2018-04-12 19:45:14,238 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-12 19:45:14,239 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-12 19:45:14,239 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-12 19:45:14,240 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-12 19:45:14,240 INFO L133 SettingsManager]: * Use SBE=true [2018-04-12 19:45:14,240 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-12 19:45:14,240 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-12 19:45:14,240 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-12 19:45:14,240 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-12 19:45:14,240 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-12 19:45:14,241 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-12 19:45:14,241 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-12 19:45:14,241 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-12 19:45:14,241 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-12 19:45:14,241 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-12 19:45:14,241 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-12 19:45:14,241 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-12 19:45:14,241 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-12 19:45:14,242 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-12 19:45:14,242 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-12 19:45:14,242 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-12 19:45:14,242 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-04-12 19:45:14,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-12 19:45:14,279 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-12 19:45:14,282 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-12 19:45:14,284 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-12 19:45:14,284 INFO L276 PluginConnector]: CDTParser initialized [2018-04-12 19:45:14,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-04-12 19:45:14,583 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGaf5fae9d5 [2018-04-12 19:45:14,693 INFO L287 CDTParser]: IsIndexed: true [2018-04-12 19:45:14,693 INFO L288 CDTParser]: Found 1 translation units. [2018-04-12 19:45:14,694 INFO L168 CDTParser]: Scanning cstrncat_unsafe_false-valid-deref.i [2018-04-12 19:45:14,694 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-12 19:45:14,695 INFO L215 ultiparseSymbolTable]: [2018-04-12 19:45:14,695 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-12 19:45:14,695 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in cstrncat_unsafe_false-valid-deref.i [2018-04-12 19:45:14,695 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcstrncat_unsafe_false_valid_deref_i__ ('') in cstrncat_unsafe_false-valid-deref.i [2018-04-12 19:45:14,695 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-12 19:45:14,695 INFO L233 ultiparseSymbolTable]: [2018-04-12 19:45:14,740 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGaf5fae9d5 [2018-04-12 19:45:14,743 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-12 19:45:14,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-12 19:45:14,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-12 19:45:14,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-12 19:45:14,751 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-12 19:45:14,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.04 07:45:14" (1/1) ... [2018-04-12 19:45:14,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbcd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 07:45:14, skipping insertion in model container [2018-04-12 19:45:14,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.04 07:45:14" (1/1) ... [2018-04-12 19:45:14,770 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-12 19:45:14,782 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-12 19:45:14,894 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-12 19:45:14,910 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-12 19:45:14,914 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-12 19:45:14,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 07:45:14 WrapperNode [2018-04-12 19:45:14,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-12 19:45:14,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-12 19:45:14,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-12 19:45:14,922 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-12 19:45:14,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 07:45:14" (1/1) ... [2018-04-12 19:45:14,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 07:45:14" (1/1) ... [2018-04-12 19:45:14,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 07:45:14" (1/1) ... [2018-04-12 19:45:14,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 07:45:14" (1/1) ... [2018-04-12 19:45:14,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 07:45:14" (1/1) ... [2018-04-12 19:45:14,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 07:45:14" (1/1) ... [2018-04-12 19:45:14,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 07:45:14" (1/1) ... [2018-04-12 19:45:14,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-12 19:45:14,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-12 19:45:14,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-12 19:45:14,946 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-12 19:45:14,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 07:45:14" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-04-12 19:45:14,980 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-12 19:45:14,981 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-12 19:45:14,981 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-04-12 19:45:14,981 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-12 19:45:14,981 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-12 19:45:14,981 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-04-12 19:45:14,981 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-12 19:45:14,981 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-12 19:45:14,981 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-12 19:45:14,981 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-12 19:45:14,981 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-12 19:45:14,981 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-12 19:45:14,981 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-12 19:45:15,187 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-12 19:45:15,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 07:45:15 BoogieIcfgContainer [2018-04-12 19:45:15,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-12 19:45:15,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-12 19:45:15,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-12 19:45:15,190 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-12 19:45:15,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.04 07:45:14" (1/3) ... [2018-04-12 19:45:15,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e69008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.04 07:45:15, skipping insertion in model container [2018-04-12 19:45:15,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 07:45:14" (2/3) ... [2018-04-12 19:45:15,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e69008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.04 07:45:15, skipping insertion in model container [2018-04-12 19:45:15,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 07:45:15" (3/3) ... [2018-04-12 19:45:15,192 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe_false-valid-deref.i [2018-04-12 19:45:15,197 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-04-12 19:45:15,203 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-04-12 19:45:15,230 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-12 19:45:15,231 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-12 19:45:15,231 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-12 19:45:15,231 INFO L371 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-04-12 19:45:15,232 INFO L372 AbstractCegarLoop]: Backedges is CANONICAL [2018-04-12 19:45:15,232 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-12 19:45:15,232 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-12 19:45:15,232 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-12 19:45:15,232 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-12 19:45:15,233 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-12 19:45:15,244 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-04-12 19:45:15,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-04-12 19:45:15,252 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 19:45:15,253 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 19:45:15,253 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolationMEMORY_LEAK, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-12 19:45:15,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1867218439, now seen corresponding path program 1 times [2018-04-12 19:45:15,290 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 19:45:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-12 19:45:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-12 19:45:15,341 INFO L421 BasicCegarLoop]: Counterexample might be feasible [2018-04-12 19:45:15,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.04 07:45:15 BoogieIcfgContainer [2018-04-12 19:45:15,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-12 19:45:15,358 INFO L168 Benchmark]: Toolchain (without parser) took 614.12 ms. Allocated memory was 395.8 MB in the beginning and 591.4 MB in the end (delta: 195.6 MB). Free memory was 336.7 MB in the beginning and 538.9 MB in the end (delta: -202.1 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-04-12 19:45:15,359 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 395.8 MB. Free memory is still 359.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-12 19:45:15,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.71 ms. Allocated memory is still 395.8 MB. Free memory was 336.7 MB in the beginning and 327.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 5.3 GB. [2018-04-12 19:45:15,359 INFO L168 Benchmark]: Boogie Preprocessor took 23.34 ms. Allocated memory is still 395.8 MB. Free memory was 327.3 MB in the beginning and 326.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-04-12 19:45:15,360 INFO L168 Benchmark]: RCFGBuilder took 241.81 ms. Allocated memory was 395.8 MB in the beginning and 591.4 MB in the end (delta: 195.6 MB). Free memory was 326.0 MB in the beginning and 553.8 MB in the end (delta: -227.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 5.3 GB. [2018-04-12 19:45:15,360 INFO L168 Benchmark]: TraceAbstraction took 169.32 ms. Allocated memory is still 591.4 MB. Free memory was 553.8 MB in the beginning and 538.9 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. [2018-04-12 19:45:15,363 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 395.8 MB. Free memory is still 359.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 176.71 ms. Allocated memory is still 395.8 MB. Free memory was 336.7 MB in the beginning and 327.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.34 ms. Allocated memory is still 395.8 MB. Free memory was 327.3 MB in the beginning and 326.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 241.81 ms. Allocated memory was 395.8 MB in the beginning and 591.4 MB in the end (delta: 195.6 MB). Free memory was 326.0 MB in the beginning and 553.8 MB in the end (delta: -227.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 169.32 ms. Allocated memory is still 591.4 MB. Free memory was 553.8 MB in the beginning and 538.9 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 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: [L16] char *s1; [L17] char *s2; [L18] int n = __VERIFIER_nondet_int(); [L19] CALL cstrncat(s1, s2, n) VAL [\old(n)=0, s1={5:7}, s2={6:2}] [L4] char *s = s1; VAL [\old(n)=0, n=0, s={5:7}, s1={5:7}, s1={5:7}, s2={6:2}, s2={6:2}] [L5] FCALL \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 11 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 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, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-12_19-45-15-369.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-12_19-45-15-369.csv Received shutdown request...