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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncat_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-10 16:57:49,090 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-10 16:57:49,091 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-10 16:57:49,101 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-10 16:57:49,101 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-10 16:57:49,102 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-10 16:57:49,103 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-10 16:57:49,105 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-10 16:57:49,106 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-10 16:57:49,107 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-10 16:57:49,108 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-10 16:57:49,108 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-10 16:57:49,109 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-10 16:57:49,110 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-10 16:57:49,111 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-10 16:57:49,112 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-10 16:57:49,114 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-10 16:57:49,115 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-10 16:57:49,116 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-10 16:57:49,117 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-10 16:57:49,119 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-10 16:57:49,120 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-10 16:57:49,120 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-10 16:57:49,121 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-10 16:57:49,121 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-10 16:57:49,122 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-10 16:57:49,122 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-10 16:57:49,123 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-10 16:57:49,124 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-10 16:57:49,124 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-10 16:57:49,124 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-10 16:57:49,125 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf [2018-04-10 16:57:49,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-10 16:57:49,142 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-10 16:57:49,143 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-10 16:57:49,143 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-10 16:57:49,143 INFO L133 SettingsManager]: * Use SBE=true [2018-04-10 16:57:49,143 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-10 16:57:49,144 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-10 16:57:49,144 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-10 16:57:49,144 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-10 16:57:49,144 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-10 16:57:49,144 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-10 16:57:49,144 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-10 16:57:49,144 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-10 16:57:49,145 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-10 16:57:49,145 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-10 16:57:49,145 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-10 16:57:49,145 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-10 16:57:49,145 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-10 16:57:49,145 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-10 16:57:49,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-10 16:57:49,146 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-10 16:57:49,146 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-04-10 16:57:49,146 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-04-10 16:57:49,146 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-10 16:57:49,171 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-10 16:57:49,182 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-10 16:57:49,186 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-10 16:57:49,187 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-10 16:57:49,188 INFO L276 PluginConnector]: CDTParser initialized [2018-04-10 16:57:49,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-04-10 16:57:49,545 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGf840a38c1 [2018-04-10 16:57:49,620 INFO L287 CDTParser]: IsIndexed: true [2018-04-10 16:57:49,621 INFO L288 CDTParser]: Found 1 translation units. [2018-04-10 16:57:49,621 INFO L168 CDTParser]: Scanning cstrncat_unsafe_false-valid-deref.i [2018-04-10 16:57:49,621 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-10 16:57:49,622 INFO L215 ultiparseSymbolTable]: [2018-04-10 16:57:49,622 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-10 16:57:49,622 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in cstrncat_unsafe_false-valid-deref.i [2018-04-10 16:57:49,622 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcstrncat_unsafe_false_valid_deref_i__ ('') in cstrncat_unsafe_false-valid-deref.i [2018-04-10 16:57:49,622 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-10 16:57:49,622 INFO L233 ultiparseSymbolTable]: [2018-04-10 16:57:49,633 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGf840a38c1 [2018-04-10 16:57:49,637 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-10 16:57:49,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-10 16:57:49,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-10 16:57:49,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-10 16:57:49,643 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-10 16:57:49,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 04:57:49" (1/1) ... [2018-04-10 16:57:49,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3862b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:49, skipping insertion in model container [2018-04-10 16:57:49,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 04:57:49" (1/1) ... [2018-04-10 16:57:49,655 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 16:57:49,665 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 16:57:49,762 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 16:57:49,783 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 16:57:49,788 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-10 16:57:49,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:49 WrapperNode [2018-04-10 16:57:49,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-10 16:57:49,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-10 16:57:49,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-10 16:57:49,795 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-10 16:57:49,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:49" (1/1) ... [2018-04-10 16:57:49,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:49" (1/1) ... [2018-04-10 16:57:49,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:49" (1/1) ... [2018-04-10 16:57:49,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:49" (1/1) ... [2018-04-10 16:57:49,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:49" (1/1) ... [2018-04-10 16:57:49,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:49" (1/1) ... [2018-04-10 16:57:49,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:49" (1/1) ... [2018-04-10 16:57:49,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-10 16:57:49,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-10 16:57:49,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-10 16:57:49,819 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-10 16:57:49,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:49" (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 [2018-04-10 16:57:49,858 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-10 16:57:49,859 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-10 16:57:49,859 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-04-10 16:57:49,859 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-10 16:57:49,859 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-10 16:57:49,859 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-04-10 16:57:49,859 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-10 16:57:49,859 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-10 16:57:49,859 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-10 16:57:49,859 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-10 16:57:49,859 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-10 16:57:49,860 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-10 16:57:49,860 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-10 16:57:50,055 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-10 16:57:50,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 04:57:50 BoogieIcfgContainer [2018-04-10 16:57:50,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-10 16:57:50,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-10 16:57:50,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-10 16:57:50,059 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-10 16:57:50,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.04 04:57:49" (1/3) ... [2018-04-10 16:57:50,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5b2f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 04:57:50, skipping insertion in model container [2018-04-10 16:57:50,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:49" (2/3) ... [2018-04-10 16:57:50,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5b2f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 04:57:50, skipping insertion in model container [2018-04-10 16:57:50,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 04:57:50" (3/3) ... [2018-04-10 16:57:50,062 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe_false-valid-deref.i [2018-04-10 16:57:50,071 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-04-10 16:57:50,077 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-04-10 16:57:50,103 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-10 16:57:50,103 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-10 16:57:50,103 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-10 16:57:50,103 INFO L371 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-04-10 16:57:50,103 INFO L372 AbstractCegarLoop]: Backedges is CANONICAL [2018-04-10 16:57:50,103 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-10 16:57:50,104 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-10 16:57:50,104 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-10 16:57:50,104 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-10 16:57:50,104 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-10 16:57:50,115 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-04-10 16:57:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-04-10 16:57:50,124 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 16:57:50,125 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 16:57:50,125 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolationMEMORY_LEAK, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-10 16:57:50,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1867218439, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-10 16:57:50,141 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 16:57:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 16:57:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 16:57:50,207 INFO L421 BasicCegarLoop]: Counterexample might be feasible [2018-04-10 16:57:50,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.04 04:57:50 BoogieIcfgContainer [2018-04-10 16:57:50,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-10 16:57:50,225 INFO L168 Benchmark]: Toolchain (without parser) took 587.55 ms. Allocated memory was 403.7 MB in the beginning and 575.7 MB in the end (delta: 172.0 MB). Free memory was 342.6 MB in the beginning and 522.0 MB in the end (delta: -179.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-04-10 16:57:50,226 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 403.7 MB. Free memory is still 353.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-10 16:57:50,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.84 ms. Allocated memory is still 403.7 MB. Free memory was 342.6 MB in the beginning and 332.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:50,227 INFO L168 Benchmark]: Boogie Preprocessor took 23.70 ms. Allocated memory is still 403.7 MB. Free memory is still 332.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-10 16:57:50,227 INFO L168 Benchmark]: RCFGBuilder took 237.26 ms. Allocated memory was 403.7 MB in the beginning and 575.7 MB in the end (delta: 172.0 MB). Free memory was 332.1 MB in the beginning and 540.4 MB in the end (delta: -208.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:50,228 INFO L168 Benchmark]: TraceAbstraction took 167.57 ms. Allocated memory is still 575.7 MB. Free memory was 540.4 MB in the beginning and 522.0 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:50,230 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 403.7 MB. Free memory is still 353.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 155.84 ms. Allocated memory is still 403.7 MB. Free memory was 342.6 MB in the beginning and 332.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.70 ms. Allocated memory is still 403.7 MB. Free memory is still 332.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 237.26 ms. Allocated memory was 403.7 MB in the beginning and 575.7 MB in the end (delta: 172.0 MB). Free memory was 332.1 MB in the beginning and 540.4 MB in the end (delta: -208.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 167.57 ms. Allocated memory is still 575.7 MB. Free memory was 540.4 MB in the beginning and 522.0 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 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={0:7}, s2={8:6}] [L4] char *s = s1; VAL [\old(n)=0, n=0, s={0:7}, s1={0:7}, s1={0:7}, s2={8:6}, s2={8:6}] [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_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-10_16-57-50-237.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_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-10_16-57-50-237.csv Received shutdown request...