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-ccafca9-m [2018-02-04 04:22:53,505 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:22:53,507 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:22:53,517 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:22:53,517 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:22:53,518 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:22:53,518 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:22:53,520 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:22:53,522 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:22:53,523 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:22:53,523 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:22:53,524 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:22:53,524 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:22:53,526 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:22:53,526 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:22:53,528 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:22:53,530 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:22:53,531 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:22:53,532 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:22:53,532 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:22:53,534 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-04 04:22:53,534 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-04 04:22:53,534 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-04 04:22:53,535 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-04 04:22:53,536 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-04 04:22:53,537 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-04 04:22:53,537 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-04 04:22:53,537 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-04 04:22:53,538 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-04 04:22:53,538 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:22:53,539 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:22:53,539 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 [2018-02-04 04:22:53,549 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:22:53,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:22:53,550 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:22:53,551 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:22:53,551 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:22:53,551 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:22:53,551 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:22:53,551 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:22:53,551 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:22:53,552 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:22:53,552 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:22:53,552 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:22:53,552 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:22:53,552 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:22:53,552 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:22:53,553 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:22:53,553 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:22:53,553 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:22:53,553 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:22:53,553 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:22:53,553 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:22:53,554 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:22:53,554 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:22:53,554 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:22:53,554 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:22:53,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:22:53,595 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:22:53,599 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:22:53,600 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:22:53,601 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:22:53,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-02-04 04:22:53,684 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:22:53,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:22:53,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:22:53,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:22:53,693 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:22:53,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:22:53" (1/1) ... [2018-02-04 04:22:53,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d1d7e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:22:53, skipping insertion in model container [2018-02-04 04:22:53,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:22:53" (1/1) ... [2018-02-04 04:22:53,713 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:22:53,727 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:22:53,827 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:22:53,838 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:22:53,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:22:53 WrapperNode [2018-02-04 04:22:53,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:22:53,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:22:53,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:22:53,842 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:22:53,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:22:53" (1/1) ... [2018-02-04 04:22:53,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:22:53" (1/1) ... [2018-02-04 04:22:53,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:22:53" (1/1) ... [2018-02-04 04:22:53,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:22:53" (1/1) ... [2018-02-04 04:22:53,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:22:53" (1/1) ... [2018-02-04 04:22:53,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:22:53" (1/1) ... [2018-02-04 04:22:53,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:22:53" (1/1) ... [2018-02-04 04:22:53,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:22:53,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:22:53,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:22:53,861 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:22:53,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:22:53" (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 [2018-02-04 04:22:53,896 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:22:53,896 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:22:53,896 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-02-04 04:22:53,897 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:22:53,897 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 04:22:53,897 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 04:22:53,897 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:22:53,897 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:22:53,897 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:22:53,897 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-02-04 04:22:53,897 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:22:53,898 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:22:53,898 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:22:54,065 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:22:54,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:22:54 BoogieIcfgContainer [2018-02-04 04:22:54,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:22:54,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:22:54,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:22:54,069 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:22:54,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:22:53" (1/3) ... [2018-02-04 04:22:54,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efcf621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:22:54, skipping insertion in model container [2018-02-04 04:22:54,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:22:53" (2/3) ... [2018-02-04 04:22:54,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efcf621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:22:54, skipping insertion in model container [2018-02-04 04:22:54,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:22:54" (3/3) ... [2018-02-04 04:22:54,071 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe_false-valid-deref.i [2018-02-04 04:22:54,078 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:22:54,085 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-02-04 04:22:54,118 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:22:54,119 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:22:54,119 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:22:54,119 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:22:54,119 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:22:54,119 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:22:54,119 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:22:54,119 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:22:54,120 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:22:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-02-04 04:22:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-04 04:22:54,137 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:22:54,138 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:22:54,138 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-02-04 04:22:54,141 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 [2018-02-04 04:22:54,150 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:22:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:22:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:22:54,214 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 04:22:54,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 04:22:54 BoogieIcfgContainer [2018-02-04 04:22:54,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 04:22:54,231 INFO L168 Benchmark]: Toolchain (without parser) took 546.12 ms. Allocated memory is still 391.1 MB. Free memory was 350.4 MB in the beginning and 305.8 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:22:54,232 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 391.1 MB. Free memory is still 354.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:22:54,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.12 ms. Allocated memory is still 391.1 MB. Free memory was 349.1 MB in the beginning and 341.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-02-04 04:22:54,234 INFO L168 Benchmark]: Boogie Preprocessor took 18.97 ms. Allocated memory is still 391.1 MB. Free memory was 341.0 MB in the beginning and 339.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:22:54,234 INFO L168 Benchmark]: RCFGBuilder took 205.10 ms. Allocated memory is still 391.1 MB. Free memory was 339.7 MB in the beginning and 321.1 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:22:54,235 INFO L168 Benchmark]: TraceAbstraction took 163.62 ms. Allocated memory is still 391.1 MB. Free memory was 321.1 MB in the beginning and 305.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:22:54,237 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 391.1 MB. Free memory is still 354.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 155.12 ms. Allocated memory is still 391.1 MB. Free memory was 349.1 MB in the beginning and 341.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 18.97 ms. Allocated memory is still 391.1 MB. Free memory was 341.0 MB in the beginning and 339.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 205.10 ms. Allocated memory is still 391.1 MB. Free memory was 339.7 MB in the beginning and 321.1 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 163.62 ms. Allocated memory is still 391.1 MB. Free memory was 321.1 MB in the beginning and 305.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 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={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) VAL [\old(n)=0, n=0, s={0:7}, s1={0:7}, s1={0:7}, s2={8:6}, s2={8:6}] - 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-0-2018-02-04_04-22-54-245.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-0-2018-02-04_04-22-54-245.csv Received shutdown request...