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/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncat_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 23:05:52,260 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 23:05:52,262 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 23:05:52,274 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 23:05:52,274 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 23:05:52,275 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 23:05:52,276 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 23:05:52,277 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 23:05:52,279 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 23:05:52,280 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 23:05:52,281 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 23:05:52,281 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 23:05:52,282 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 23:05:52,283 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 23:05:52,285 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 23:05:52,287 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 23:05:52,290 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 23:05:52,292 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 23:05:52,293 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 23:05:52,294 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 23:05:52,297 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 23:05:52,297 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 23:05:52,297 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 23:05:52,298 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 23:05:52,299 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 23:05:52,300 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 23:05:52,301 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 23:05:52,301 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 23:05:52,302 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 23:05:52,302 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 23:05:52,302 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 23:05:52,303 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-24 23:05:52,313 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 23:05:52,313 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 23:05:52,314 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 23:05:52,314 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 23:05:52,314 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 23:05:52,315 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 23:05:52,315 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 23:05:52,315 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 23:05:52,316 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 23:05:52,316 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 23:05:52,316 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 23:05:52,317 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 23:05:52,317 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 23:05:52,317 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 23:05:52,317 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 23:05:52,317 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 23:05:52,317 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 23:05:52,318 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 23:05:52,318 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 23:05:52,318 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 23:05:52,318 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 23:05:52,319 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 23:05:52,319 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 23:05:52,319 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 23:05:52,319 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 23:05:52,319 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 23:05:52,320 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 23:05:52,320 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 23:05:52,320 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 23:05:52,320 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 23:05:52,320 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 23:05:52,320 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 23:05:52,321 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 23:05:52,321 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 23:05:52,322 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 23:05:52,322 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 23:05:52,359 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 23:05:52,373 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 23:05:52,377 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 23:05:52,379 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 23:05:52,380 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 23:05:52,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-01-24 23:05:52,507 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 23:05:52,514 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 23:05:52,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 23:05:52,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 23:05:52,524 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 23:05:52,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:05:52" (1/1) ... [2018-01-24 23:05:52,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fe0f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:05:52, skipping insertion in model container [2018-01-24 23:05:52,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:05:52" (1/1) ... [2018-01-24 23:05:52,545 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:05:52,565 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:05:52,690 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:05:52,706 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:05:52,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:05:52 WrapperNode [2018-01-24 23:05:52,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 23:05:52,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 23:05:52,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 23:05:52,712 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 23:05:52,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:05:52" (1/1) ... [2018-01-24 23:05:52,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:05:52" (1/1) ... [2018-01-24 23:05:52,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:05:52" (1/1) ... [2018-01-24 23:05:52,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:05:52" (1/1) ... [2018-01-24 23:05:52,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:05:52" (1/1) ... [2018-01-24 23:05:52,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:05:52" (1/1) ... [2018-01-24 23:05:52,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:05:52" (1/1) ... [2018-01-24 23:05:52,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 23:05:52,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 23:05:52,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 23:05:52,777 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 23:05:52,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:05:52" (1/1) ... No working directory specified, using /storage/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 [2018-01-24 23:05:52,828 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 23:05:52,828 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 23:05:52,828 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-01-24 23:05:52,829 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 23:05:52,829 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 23:05:52,829 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 23:05:52,829 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 23:05:52,829 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 23:05:52,829 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 23:05:52,829 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-01-24 23:05:52,829 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 23:05:52,830 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 23:05:52,830 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 23:05:53,029 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 23:05:53,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:05:53 BoogieIcfgContainer [2018-01-24 23:05:53,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 23:05:53,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 23:05:53,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 23:05:53,032 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 23:05:53,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 11:05:52" (1/3) ... [2018-01-24 23:05:53,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6060c52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:05:53, skipping insertion in model container [2018-01-24 23:05:53,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:05:52" (2/3) ... [2018-01-24 23:05:53,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6060c52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:05:53, skipping insertion in model container [2018-01-24 23:05:53,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:05:53" (3/3) ... [2018-01-24 23:05:53,036 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe_false-valid-deref.i [2018-01-24 23:05:53,043 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 23:05:53,048 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-01-24 23:05:53,095 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 23:05:53,095 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 23:05:53,095 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 23:05:53,095 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 23:05:53,096 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 23:05:53,096 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 23:05:53,096 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 23:05:53,096 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 23:05:53,097 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 23:05:53,113 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-01-24 23:05:53,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-24 23:05:53,118 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:05:53,119 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:05:53,120 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-01-24 23:05:53,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1867218439, now seen corresponding path program 1 times [2018-01-24 23:05:53,129 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:05:53,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:05:53,175 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:05:53,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:05:53,175 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:05:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 23:05:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 23:05:53,259 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 23:05:53,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 11:05:53 BoogieIcfgContainer [2018-01-24 23:05:53,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 23:05:53,287 INFO L168 Benchmark]: Toolchain (without parser) took 779.82 ms. Allocated memory is still 308.3 MB. Free memory was 269.2 MB in the beginning and 229.8 MB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 5.3 GB. [2018-01-24 23:05:53,289 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 308.3 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 23:05:53,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.50 ms. Allocated memory is still 308.3 MB. Free memory was 269.2 MB in the beginning and 260.9 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 5.3 GB. [2018-01-24 23:05:53,290 INFO L168 Benchmark]: Boogie Preprocessor took 64.01 ms. Allocated memory is still 308.3 MB. Free memory was 260.9 MB in the beginning and 259.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 23:05:53,290 INFO L168 Benchmark]: RCFGBuilder took 253.65 ms. Allocated memory is still 308.3 MB. Free memory was 259.0 MB in the beginning and 241.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. [2018-01-24 23:05:53,291 INFO L168 Benchmark]: TraceAbstraction took 256.25 ms. Allocated memory is still 308.3 MB. Free memory was 241.8 MB in the beginning and 229.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-24 23:05:53,293 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 308.3 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 196.50 ms. Allocated memory is still 308.3 MB. Free memory was 269.2 MB in the beginning and 260.9 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 64.01 ms. Allocated memory is still 308.3 MB. Free memory was 260.9 MB in the beginning and 259.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 253.65 ms. Allocated memory is still 308.3 MB. Free memory was 259.0 MB in the beginning and 241.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 256.25 ms. Allocated memory is still 308.3 MB. Free memory was 241.8 MB in the beginning and 229.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: 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) VAL [\old(n)=0, n=0, s={5:7}, s1={5:7}, s1={5:7}, s2={6:2}, s2={6:2}] - 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, 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, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_23-05-53-304.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_23-05-53-304.csv Received shutdown request...