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/array-memsafety/selectionsort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-10 14:35:28,389 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-10 14:35:28,391 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-10 14:35:28,403 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-10 14:35:28,403 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-10 14:35:28,404 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-10 14:35:28,405 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-10 14:35:28,407 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-10 14:35:28,409 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-10 14:35:28,409 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-10 14:35:28,410 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-10 14:35:28,410 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-10 14:35:28,411 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-10 14:35:28,412 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-10 14:35:28,413 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-10 14:35:28,414 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-10 14:35:28,416 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-10 14:35:28,418 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-10 14:35:28,419 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-10 14:35:28,420 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-10 14:35:28,421 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-10 14:35:28,422 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-10 14:35:28,422 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-10 14:35:28,423 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-10 14:35:28,423 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-10 14:35:28,424 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-10 14:35:28,425 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-10 14:35:28,425 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-10 14:35:28,426 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-10 14:35:28,426 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-10 14:35:28,427 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-10 14:35:28,427 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 14:35:28,438 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-10 14:35:28,439 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-10 14:35:28,439 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-10 14:35:28,440 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-10 14:35:28,440 INFO L133 SettingsManager]: * Use SBE=true [2018-04-10 14:35:28,440 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-10 14:35:28,440 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-10 14:35:28,440 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-10 14:35:28,440 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-10 14:35:28,440 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-10 14:35:28,441 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-10 14:35:28,441 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-10 14:35:28,441 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-10 14:35:28,441 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-10 14:35:28,441 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-10 14:35:28,441 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-10 14:35:28,441 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-10 14:35:28,442 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-10 14:35:28,442 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-10 14:35:28,442 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-10 14:35:28,442 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-10 14:35:28,442 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-04-10 14:35:28,469 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-10 14:35:28,478 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-10 14:35:28,481 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-10 14:35:28,483 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-10 14:35:28,483 INFO L276 PluginConnector]: CDTParser initialized [2018-04-10 14:35:28,484 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-04-10 14:35:28,757 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGd916c2df4 [2018-04-10 14:35:28,860 INFO L287 CDTParser]: IsIndexed: true [2018-04-10 14:35:28,861 INFO L288 CDTParser]: Found 1 translation units. [2018-04-10 14:35:28,861 INFO L168 CDTParser]: Scanning selectionsort_unsafe_false-valid-deref.i [2018-04-10 14:35:28,862 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-10 14:35:28,862 INFO L215 ultiparseSymbolTable]: [2018-04-10 14:35:28,862 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-10 14:35:28,863 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in selectionsort_unsafe_false-valid-deref.i [2018-04-10 14:35:28,863 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSort ('SelectionSort') in selectionsort_unsafe_false-valid-deref.i [2018-04-10 14:35:28,863 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-10 14:35:28,863 INFO L233 ultiparseSymbolTable]: [2018-04-10 14:35:28,876 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGd916c2df4 [2018-04-10 14:35:28,879 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-10 14:35:28,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-10 14:35:28,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-10 14:35:28,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-10 14:35:28,885 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-10 14:35:28,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 02:35:28" (1/1) ... [2018-04-10 14:35:28,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de3baaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:35:28, skipping insertion in model container [2018-04-10 14:35:28,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 02:35:28" (1/1) ... [2018-04-10 14:35:28,897 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 14:35:28,906 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 14:35:29,001 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 14:35:29,021 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 14:35:29,025 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-10 14:35:29,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:35:29 WrapperNode [2018-04-10 14:35:29,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-10 14:35:29,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-10 14:35:29,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-10 14:35:29,033 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-10 14:35:29,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:35:29" (1/1) ... [2018-04-10 14:35:29,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:35:29" (1/1) ... [2018-04-10 14:35:29,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:35:29" (1/1) ... [2018-04-10 14:35:29,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:35:29" (1/1) ... [2018-04-10 14:35:29,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:35:29" (1/1) ... [2018-04-10 14:35:29,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:35:29" (1/1) ... [2018-04-10 14:35:29,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:35:29" (1/1) ... [2018-04-10 14:35:29,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-10 14:35:29,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-10 14:35:29,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-10 14:35:29,063 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-10 14:35:29,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:35:29" (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 14:35:29,104 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-10 14:35:29,104 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-10 14:35:29,104 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSort [2018-04-10 14:35:29,104 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-10 14:35:29,104 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-10 14:35:29,104 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSort [2018-04-10 14:35:29,104 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-10 14:35:29,105 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-10 14:35:29,105 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-10 14:35:29,105 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-10 14:35:29,105 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-10 14:35:29,105 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-10 14:35:29,105 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-10 14:35:29,311 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-10 14:35:29,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 02:35:29 BoogieIcfgContainer [2018-04-10 14:35:29,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-10 14:35:29,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-10 14:35:29,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-10 14:35:29,314 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-10 14:35:29,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.04 02:35:28" (1/3) ... [2018-04-10 14:35:29,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d447a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 02:35:29, skipping insertion in model container [2018-04-10 14:35:29,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 02:35:29" (2/3) ... [2018-04-10 14:35:29,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d447a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 02:35:29, skipping insertion in model container [2018-04-10 14:35:29,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 02:35:29" (3/3) ... [2018-04-10 14:35:29,316 INFO L107 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-04-10 14:35:29,324 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-04-10 14:35:29,330 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-04-10 14:35:29,358 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-10 14:35:29,359 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-10 14:35:29,359 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-10 14:35:29,360 INFO L371 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-04-10 14:35:29,360 INFO L372 AbstractCegarLoop]: Backedges is CANONICAL [2018-04-10 14:35:29,360 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-10 14:35:29,360 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-10 14:35:29,360 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-10 14:35:29,360 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-10 14:35:29,361 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-10 14:35:29,373 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-04-10 14:35:29,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-04-10 14:35:29,381 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 14:35:29,382 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 14:35:29,382 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolationMEMORY_LEAK, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr8RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr11RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr2RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr3RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr4RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr9RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr10RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr7RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr5RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr1RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr0RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr6RequiresViolation]=== [2018-04-10 14:35:29,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1085542032, now seen corresponding path program 1 times [2018-04-10 14:35:29,424 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 14:35:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 14:35:29,458 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 14:35:29,482 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 14:35:29,485 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 14:35:29,485 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-04-10 14:35:29,486 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-04-10 14:35:29,486 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 14:35:29,487 INFO L182 omatonBuilderFactory]: Interpolants [46#true, 47#false] [2018-04-10 14:35:29,487 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 14:35:29,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-04-10 14:35:29,497 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-04-10 14:35:29,498 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-10 14:35:29,499 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-04-10 14:35:29,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 14:35:29,515 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-04-10 14:35:29,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-04-10 14:35:29,517 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-04-10 14:35:29,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 14:35:29,525 INFO L225 Difference]: With dead ends: 42 [2018-04-10 14:35:29,525 INFO L226 Difference]: Without dead ends: 35 [2018-04-10 14:35:29,527 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-10 14:35:29,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-04-10 14:35:29,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-04-10 14:35:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-04-10 14:35:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-04-10 14:35:29,552 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 12 [2018-04-10 14:35:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 14:35:29,552 INFO L459 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-04-10 14:35:29,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-04-10 14:35:29,553 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-04-10 14:35:29,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-10 14:35:29,553 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 14:35:29,553 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 14:35:29,553 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolationMEMORY_LEAK, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr8RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr11RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr2RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr3RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr4RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr9RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr10RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr7RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr5RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr1RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr0RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr6RequiresViolation]=== [2018-04-10 14:35:29,554 INFO L82 PathProgramCache]: Analyzing trace with hash 707915582, now seen corresponding path program 1 times [2018-04-10 14:35:29,554 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 14:35:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 14:35:29,565 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 14:35:29,600 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 14:35:29,600 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 14:35:29,600 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-10 14:35:29,600 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-04-10 14:35:29,601 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 14:35:29,601 INFO L182 omatonBuilderFactory]: Interpolants [125#true, 126#false, 127#(<= (+ __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSort_~j~0 1) __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSort_~array_size)] [2018-04-10 14:35:29,601 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 14:35:29,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-10 14:35:29,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-10 14:35:29,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-10 14:35:29,603 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2018-04-10 14:35:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 14:35:29,630 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-04-10 14:35:29,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-10 14:35:29,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-04-10 14:35:29,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 14:35:29,638 INFO L225 Difference]: With dead ends: 37 [2018-04-10 14:35:29,638 INFO L226 Difference]: Without dead ends: 37 [2018-04-10 14:35:29,639 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:35:29,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-04-10 14:35:29,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-04-10 14:35:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-04-10 14:35:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-04-10 14:35:29,642 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 13 [2018-04-10 14:35:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 14:35:29,643 INFO L459 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-04-10 14:35:29,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-10 14:35:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-04-10 14:35:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-10 14:35:29,643 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 14:35:29,643 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 14:35:29,643 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolationMEMORY_LEAK, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr8RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr11RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr2RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr3RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr4RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr9RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr10RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr7RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr5RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr1RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr0RequiresViolation, __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSortErr6RequiresViolation]=== [2018-04-10 14:35:29,644 INFO L82 PathProgramCache]: Analyzing trace with hash 707915628, now seen corresponding path program 1 times [2018-04-10 14:35:29,644 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 14:35:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 14:35:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 14:35:29,681 INFO L421 BasicCegarLoop]: Counterexample might be feasible [2018-04-10 14:35:29,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.04 02:35:29 BoogieIcfgContainer [2018-04-10 14:35:29,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-10 14:35:29,696 INFO L168 Benchmark]: Toolchain (without parser) took 817.19 ms. Allocated memory was 403.7 MB in the beginning and 612.9 MB in the end (delta: 209.2 MB). Free memory was 343.3 MB in the beginning and 540.6 MB in the end (delta: -197.3 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. [2018-04-10 14:35:29,698 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 403.7 MB. Free memory is still 365.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-10 14:35:29,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.51 ms. Allocated memory is still 403.7 MB. Free memory was 343.3 MB in the beginning and 333.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 5.3 GB. [2018-04-10 14:35:29,699 INFO L168 Benchmark]: Boogie Preprocessor took 30.29 ms. Allocated memory is still 403.7 MB. Free memory was 333.8 MB in the beginning and 332.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-04-10 14:35:29,700 INFO L168 Benchmark]: RCFGBuilder took 249.09 ms. Allocated memory was 403.7 MB in the beginning and 612.9 MB in the end (delta: 209.2 MB). Free memory was 332.4 MB in the beginning and 575.8 MB in the end (delta: -243.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 5.3 GB. [2018-04-10 14:35:29,700 INFO L168 Benchmark]: TraceAbstraction took 383.19 ms. Allocated memory is still 612.9 MB. Free memory was 575.8 MB in the beginning and 540.6 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 5.3 GB. [2018-04-10 14:35:29,702 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 403.7 MB. Free memory is still 365.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 151.51 ms. Allocated memory is still 403.7 MB. Free memory was 343.3 MB in the beginning and 333.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.29 ms. Allocated memory is still 403.7 MB. Free memory was 333.8 MB in the beginning and 332.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 249.09 ms. Allocated memory was 403.7 MB in the beginning and 612.9 MB in the end (delta: 209.2 MB). Free memory was 332.4 MB in the beginning and 575.8 MB in the end (delta: -243.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 383.19 ms. Allocated memory is still 612.9 MB. Free memory was 575.8 MB in the beginning and 540.6 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L20] int *a; [L21] int array_size = __VERIFIER_nondet_int(); [L22] CALL SelectionSort(a, array_size) VAL [\old(array_size)=2, a={4:6}] [L4] int i; [L5] i = 0 VAL [\old(array_size)=2, a={4:6}, a={4:6}, array_size=2, i=0] [L5] COND TRUE i < array_size - 1 [L7] int j, min, temp; [L8] min = i [L9] j = i+1 VAL [\old(array_size)=2, a={4:6}, a={4:6}, array_size=2, i=0, j=1, min=0] [L9] COND TRUE j < array_size VAL [\old(array_size)=2, a={4:6}, a={4:6}, array_size=2, i=0, j=1, min=0] [L11] FCALL a[j] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 13 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 9 SDslu, 24 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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/selectionsort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-10_14-35-29-710.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-10_14-35-29-710.csv Received shutdown request...