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_z3.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncat_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-11 18:04:06,514 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-11 18:04:06,515 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-11 18:04:06,527 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-11 18:04:06,527 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-11 18:04:06,528 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-11 18:04:06,529 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-11 18:04:06,530 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-11 18:04:06,532 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-11 18:04:06,533 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-11 18:04:06,534 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-11 18:04:06,534 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-11 18:04:06,535 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-11 18:04:06,536 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-11 18:04:06,536 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-11 18:04:06,538 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-11 18:04:06,539 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-11 18:04:06,541 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-11 18:04:06,542 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-11 18:04:06,543 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-11 18:04:06,544 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-11 18:04:06,545 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-11 18:04:06,545 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-11 18:04:06,546 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-11 18:04:06,547 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-11 18:04:06,547 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-11 18:04:06,548 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-11 18:04:06,548 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-11 18:04:06,549 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-11 18:04:06,549 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-11 18:04:06,549 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-11 18:04:06,550 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 [2018-04-11 18:04:06,570 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-11 18:04:06,571 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-11 18:04:06,572 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-11 18:04:06,572 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-11 18:04:06,572 INFO L133 SettingsManager]: * Use SBE=true [2018-04-11 18:04:06,572 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-11 18:04:06,572 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-11 18:04:06,572 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-11 18:04:06,572 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-11 18:04:06,572 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-11 18:04:06,572 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-11 18:04:06,572 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-11 18:04:06,573 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-11 18:04:06,573 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-11 18:04:06,573 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-11 18:04:06,573 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-11 18:04:06,573 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-11 18:04:06,573 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-11 18:04:06,573 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-11 18:04:06,573 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 18:04:06,573 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-11 18:04:06,574 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-04-11 18:04:06,574 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-04-11 18:04:06,574 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-04-11 18:04:06,600 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-11 18:04:06,608 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-11 18:04:06,610 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-11 18:04:06,612 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-11 18:04:06,612 INFO L276 PluginConnector]: CDTParser initialized [2018-04-11 18:04:06,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-04-11 18:04:06,943 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGdfa8320a1 [2018-04-11 18:04:07,019 INFO L287 CDTParser]: IsIndexed: true [2018-04-11 18:04:07,019 INFO L288 CDTParser]: Found 1 translation units. [2018-04-11 18:04:07,020 INFO L168 CDTParser]: Scanning cstrncat_unsafe_false-valid-deref.i [2018-04-11 18:04:07,020 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-11 18:04:07,020 INFO L215 ultiparseSymbolTable]: [2018-04-11 18:04:07,020 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-11 18:04:07,021 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in cstrncat_unsafe_false-valid-deref.i [2018-04-11 18:04:07,021 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcstrncat_unsafe_false_valid_deref_i__ ('') in cstrncat_unsafe_false-valid-deref.i [2018-04-11 18:04:07,021 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-11 18:04:07,021 INFO L233 ultiparseSymbolTable]: [2018-04-11 18:04:07,032 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGdfa8320a1 [2018-04-11 18:04:07,036 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-11 18:04:07,037 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-11 18:04:07,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-11 18:04:07,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-11 18:04:07,043 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-11 18:04:07,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 06:04:07" (1/1) ... [2018-04-11 18:04:07,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24eee62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 06:04:07, skipping insertion in model container [2018-04-11 18:04:07,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 06:04:07" (1/1) ... [2018-04-11 18:04:07,058 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 18:04:07,066 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 18:04:07,159 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 18:04:07,178 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 18:04:07,182 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-11 18:04:07,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 06:04:07 WrapperNode [2018-04-11 18:04:07,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-11 18:04:07,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-11 18:04:07,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-11 18:04:07,189 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-11 18:04:07,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 06:04:07" (1/1) ... [2018-04-11 18:04:07,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 06:04:07" (1/1) ... [2018-04-11 18:04:07,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 06:04:07" (1/1) ... [2018-04-11 18:04:07,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 06:04:07" (1/1) ... [2018-04-11 18:04:07,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 06:04:07" (1/1) ... [2018-04-11 18:04:07,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 06:04:07" (1/1) ... [2018-04-11 18:04:07,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 06:04:07" (1/1) ... [2018-04-11 18:04:07,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-11 18:04:07,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-11 18:04:07,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-11 18:04:07,214 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-11 18:04:07,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 06:04:07" (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 [2018-04-11 18:04:07,247 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-11 18:04:07,247 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-11 18:04:07,247 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-04-11 18:04:07,247 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-11 18:04:07,247 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-11 18:04:07,247 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-04-11 18:04:07,247 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-11 18:04:07,247 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-11 18:04:07,248 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-11 18:04:07,248 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-11 18:04:07,248 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-11 18:04:07,248 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-11 18:04:07,248 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-11 18:04:07,437 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-11 18:04:07,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 06:04:07 BoogieIcfgContainer [2018-04-11 18:04:07,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-11 18:04:07,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-11 18:04:07,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-11 18:04:07,440 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-11 18:04:07,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.04 06:04:07" (1/3) ... [2018-04-11 18:04:07,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edc95b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 06:04:07, skipping insertion in model container [2018-04-11 18:04:07,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 06:04:07" (2/3) ... [2018-04-11 18:04:07,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edc95b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 06:04:07, skipping insertion in model container [2018-04-11 18:04:07,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 06:04:07" (3/3) ... [2018-04-11 18:04:07,442 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe_false-valid-deref.i [2018-04-11 18:04:07,448 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-04-11 18:04:07,461 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-04-11 18:04:07,489 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-11 18:04:07,490 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-11 18:04:07,490 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-11 18:04:07,490 INFO L371 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-04-11 18:04:07,490 INFO L372 AbstractCegarLoop]: Backedges is CANONICAL [2018-04-11 18:04:07,490 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-11 18:04:07,491 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-11 18:04:07,491 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-11 18:04:07,491 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-11 18:04:07,491 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-11 18:04:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-04-11 18:04:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-04-11 18:04:07,510 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 18:04:07,511 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 18:04:07,511 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolationMEMORY_LEAK, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 18:04:07,517 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 [2018-04-11 18:04:07,530 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 18:04:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-11 18:04:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-11 18:04:07,594 INFO L421 BasicCegarLoop]: Counterexample might be feasible [2018-04-11 18:04:07,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.04 06:04:07 BoogieIcfgContainer [2018-04-11 18:04:07,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-11 18:04:07,610 INFO L168 Benchmark]: Toolchain (without parser) took 574.20 ms. Allocated memory was 403.2 MB in the beginning and 589.3 MB in the end (delta: 186.1 MB). Free memory was 342.2 MB in the beginning and 536.2 MB in the end (delta: -194.0 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-04-11 18:04:07,612 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 403.2 MB. Free memory is still 362.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-11 18:04:07,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.41 ms. Allocated memory is still 403.2 MB. Free memory was 341.6 MB in the beginning and 331.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-04-11 18:04:07,613 INFO L168 Benchmark]: Boogie Preprocessor took 25.01 ms. Allocated memory is still 403.2 MB. Free memory was 330.9 MB in the beginning and 329.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. [2018-04-11 18:04:07,613 INFO L168 Benchmark]: RCFGBuilder took 223.97 ms. Allocated memory was 403.2 MB in the beginning and 589.3 MB in the end (delta: 186.1 MB). Free memory was 329.3 MB in the beginning and 554.5 MB in the end (delta: -225.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 5.3 GB. [2018-04-11 18:04:07,614 INFO L168 Benchmark]: TraceAbstraction took 171.79 ms. Allocated memory is still 589.3 MB. Free memory was 554.5 MB in the beginning and 536.2 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 5.3 GB. [2018-04-11 18:04:07,617 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 403.2 MB. Free memory is still 362.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 150.41 ms. Allocated memory is still 403.2 MB. Free memory was 341.6 MB in the beginning and 331.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 25.01 ms. Allocated memory is still 403.2 MB. Free memory was 330.9 MB in the beginning and 329.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 223.97 ms. Allocated memory was 403.2 MB in the beginning and 589.3 MB in the end (delta: 186.1 MB). Free memory was 329.3 MB in the beginning and 554.5 MB in the end (delta: -225.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 171.79 ms. Allocated memory is still 589.3 MB. Free memory was 554.5 MB in the beginning and 536.2 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 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-0-2018-04-11_18-04-07-623.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-0-2018-04-11_18-04-07-623.csv Received shutdown request...