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_SmtInterpol_Array.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memset2_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-10 14:59:24,222 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-10 14:59:24,223 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-10 14:59:24,237 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-10 14:59:24,237 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-10 14:59:24,238 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-10 14:59:24,239 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-10 14:59:24,240 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-10 14:59:24,242 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-10 14:59:24,243 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-10 14:59:24,243 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-10 14:59:24,243 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-10 14:59:24,244 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-10 14:59:24,245 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-10 14:59:24,246 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-10 14:59:24,247 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-10 14:59:24,249 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-10 14:59:24,250 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-10 14:59:24,251 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-10 14:59:24,252 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-10 14:59:24,254 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-10 14:59:24,254 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-10 14:59:24,254 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-10 14:59:24,255 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-10 14:59:24,256 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-10 14:59:24,257 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-10 14:59:24,257 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-10 14:59:24,257 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-10 14:59:24,258 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-10 14:59:24,258 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-10 14:59:24,259 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-10 14:59:24,259 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf [2018-04-10 14:59:24,272 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-10 14:59:24,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-10 14:59:24,274 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-10 14:59:24,274 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-10 14:59:24,274 INFO L133 SettingsManager]: * Use SBE=true [2018-04-10 14:59:24,274 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-10 14:59:24,274 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-10 14:59:24,274 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-10 14:59:24,275 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-10 14:59:24,275 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-10 14:59:24,275 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-10 14:59:24,275 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-10 14:59:24,275 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-10 14:59:24,275 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-10 14:59:24,275 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-10 14:59:24,276 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-10 14:59:24,276 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-10 14:59:24,276 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-10 14:59:24,276 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-10 14:59:24,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-10 14:59:24,276 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-10 14:59:24,277 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-04-10 14:59:24,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-10 14:59:24,316 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-10 14:59:24,320 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-10 14:59:24,321 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-10 14:59:24,322 INFO L276 PluginConnector]: CDTParser initialized [2018-04-10 14:59:24,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memset2_false-valid-deref-write.c [2018-04-10 14:59:24,637 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGab2318b8a [2018-04-10 14:59:24,764 INFO L287 CDTParser]: IsIndexed: true [2018-04-10 14:59:24,764 INFO L288 CDTParser]: Found 1 translation units. [2018-04-10 14:59:24,765 INFO L168 CDTParser]: Scanning memset2_false-valid-deref-write.c [2018-04-10 14:59:24,766 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-10 14:59:24,766 INFO L215 ultiparseSymbolTable]: [2018-04-10 14:59:24,766 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-10 14:59:24,767 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in memset2_false-valid-deref-write.c [2018-04-10 14:59:24,767 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-10 14:59:24,767 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fmemset__false_valid_deref_write_c__size_t in memset2_false-valid-deref-write.c [2018-04-10 14:59:24,767 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fmemset__false_valid_deref_write_c____kernel_size_t in memset2_false-valid-deref-write.c [2018-04-10 14:59:24,767 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fmemset__false_valid_deref_write_c____u32 in memset2_false-valid-deref-write.c [2018-04-10 14:59:24,781 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGab2318b8a [2018-04-10 14:59:24,785 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-10 14:59:24,786 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-10 14:59:24,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-10 14:59:24,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-10 14:59:24,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-10 14:59:24,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 02:59:24" (1/1) ... [2018-04-10 14:59:24,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72679730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:59:24, skipping insertion in model container [2018-04-10 14:59:24,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 02:59:24" (1/1) ... [2018-04-10 14:59:24,808 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 14:59:24,817 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 14:59:24,904 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 14:59:24,924 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 14:59:24,928 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 7 non ball SCCs. Number of states in SCCs 7. [2018-04-10 14:59:24,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:59:24 WrapperNode [2018-04-10 14:59:24,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-10 14:59:24,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-10 14:59:24,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-10 14:59:24,934 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-10 14:59:24,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:59:24" (1/1) ... [2018-04-10 14:59:24,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:59:24" (1/1) ... [2018-04-10 14:59:24,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:59:24" (1/1) ... [2018-04-10 14:59:24,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:59:24" (1/1) ... [2018-04-10 14:59:24,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:59:24" (1/1) ... [2018-04-10 14:59:24,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:59:24" (1/1) ... [2018-04-10 14:59:24,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:59:24" (1/1) ... [2018-04-10 14:59:24,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-10 14:59:24,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-10 14:59:24,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-10 14:59:24,959 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-10 14:59:24,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:59:24" (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 14:59:25,000 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-10 14:59:25,001 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-10 14:59:25,001 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-10 14:59:25,001 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-04-10 14:59:25,001 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-04-10 14:59:25,001 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-10 14:59:25,002 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-10 14:59:25,002 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-04-10 14:59:25,002 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-10 14:59:25,002 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-10 14:59:25,002 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-10 14:59:25,130 WARN L446 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-04-10 14:59:25,169 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-10 14:59:25,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 02:59:25 BoogieIcfgContainer [2018-04-10 14:59:25,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-10 14:59:25,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-10 14:59:25,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-10 14:59:25,173 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-10 14:59:25,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.04 02:59:24" (1/3) ... [2018-04-10 14:59:25,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343245c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 02:59:25, skipping insertion in model container [2018-04-10 14:59:25,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:59:24" (2/3) ... [2018-04-10 14:59:25,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343245c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 02:59:25, skipping insertion in model container [2018-04-10 14:59:25,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 02:59:25" (3/3) ... [2018-04-10 14:59:25,176 INFO L107 eAbstractionObserver]: Analyzing ICFG memset2_false-valid-deref-write.c [2018-04-10 14:59:25,182 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-04-10 14:59:25,187 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-04-10 14:59:25,214 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-10 14:59:25,215 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-10 14:59:25,215 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-10 14:59:25,215 INFO L371 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-04-10 14:59:25,215 INFO L372 AbstractCegarLoop]: Backedges is CANONICAL [2018-04-10 14:59:25,215 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-10 14:59:25,216 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-10 14:59:25,216 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-10 14:59:25,216 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-10 14:59:25,217 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-10 14:59:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-04-10 14:59:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-04-10 14:59:25,238 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 14:59:25,239 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-04-10 14:59:25,239 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-10 14:59:25,242 INFO L82 PathProgramCache]: Analyzing trace with hash 682221498, now seen corresponding path program 1 times [2018-04-10 14:59:25,276 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 14:59:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 14:59:25,305 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 14:59:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 14:59:25,352 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 14:59:25,352 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-04-10 14:59:25,353 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-04-10 14:59:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 14:59:25,353 INFO L182 omatonBuilderFactory]: Interpolants [25#true, 26#false, 27#(= 1 (select |#valid| |main_~#cstats~0.base|))] [2018-04-10 14:59:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 14:59:25,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-10 14:59:25,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-10 14:59:25,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-10 14:59:25,365 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2018-04-10 14:59:25,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 14:59:25,395 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-04-10 14:59:25,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-10 14:59:25,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-04-10 14:59:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 14:59:25,403 INFO L225 Difference]: With dead ends: 21 [2018-04-10 14:59:25,403 INFO L226 Difference]: Without dead ends: 18 [2018-04-10 14:59:25,405 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-10 14:59:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-04-10 14:59:25,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-04-10 14:59:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-04-10 14:59:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-04-10 14:59:25,431 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2018-04-10 14:59:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 14:59:25,432 INFO L459 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-04-10 14:59:25,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-10 14:59:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-04-10 14:59:25,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-04-10 14:59:25,432 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 14:59:25,433 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-04-10 14:59:25,433 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-10 14:59:25,433 INFO L82 PathProgramCache]: Analyzing trace with hash 682221499, now seen corresponding path program 1 times [2018-04-10 14:59:25,434 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 14:59:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 14:59:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 14:59:25,465 INFO L421 BasicCegarLoop]: Counterexample might be feasible [2018-04-10 14:59:25,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.04 02:59:25 BoogieIcfgContainer [2018-04-10 14:59:25,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-10 14:59:25,478 INFO L168 Benchmark]: Toolchain (without parser) took 691.89 ms. Allocated memory was 401.1 MB in the beginning and 606.6 MB in the end (delta: 205.5 MB). Free memory was 340.8 MB in the beginning and 550.4 MB in the end (delta: -209.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-04-10 14:59:25,479 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 401.1 MB. Free memory is still 362.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-10 14:59:25,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.53 ms. Allocated memory is still 401.1 MB. Free memory was 340.8 MB in the beginning and 331.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 5.3 GB. [2018-04-10 14:59:25,480 INFO L168 Benchmark]: Boogie Preprocessor took 24.28 ms. Allocated memory is still 401.1 MB. Free memory was 331.4 MB in the beginning and 330.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-04-10 14:59:25,480 INFO L168 Benchmark]: RCFGBuilder took 211.18 ms. Allocated memory was 401.1 MB in the beginning and 606.6 MB in the end (delta: 205.5 MB). Free memory was 330.1 MB in the beginning and 573.2 MB in the end (delta: -243.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 5.3 GB. [2018-04-10 14:59:25,481 INFO L168 Benchmark]: TraceAbstraction took 306.90 ms. Allocated memory is still 606.6 MB. Free memory was 573.2 MB in the beginning and 550.4 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 5.3 GB. [2018-04-10 14:59:25,483 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 401.1 MB. Free memory is still 362.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 146.53 ms. Allocated memory is still 401.1 MB. Free memory was 340.8 MB in the beginning and 331.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 24.28 ms. Allocated memory is still 401.1 MB. Free memory was 331.4 MB in the beginning and 330.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 211.18 ms. Allocated memory was 401.1 MB in the beginning and 606.6 MB in the end (delta: 205.5 MB). Free memory was 330.1 MB in the beginning and 573.2 MB in the end (delta: -243.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 306.90 ms. Allocated memory is still 606.6 MB. Free memory was 573.2 MB in the beginning and 550.4 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] FCALL struct compstat cstats ; VAL [cstats={43:0}] [L22] FCALL memset((void *)(& cstats), 0, 41UL) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 3 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 2 SDslu, 10 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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/memset2_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-10_14-59-25-491.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset2_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-10_14-59-25-491.csv Received shutdown request...