java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv --cacsl2boogietranslator.bitprecise.bitfields false -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-11 20:16:48,336 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-11 20:16:48,337 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-11 20:16:48,347 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-11 20:16:48,347 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-11 20:16:48,348 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-11 20:16:48,349 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-11 20:16:48,351 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-11 20:16:48,352 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-11 20:16:48,353 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-11 20:16:48,354 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-11 20:16:48,354 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-11 20:16:48,355 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-11 20:16:48,356 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-11 20:16:48,357 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-11 20:16:48,358 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-11 20:16:48,360 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-11 20:16:48,361 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-11 20:16:48,362 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-11 20:16:48,363 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-11 20:16:48,365 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-11 20:16:48,365 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-11 20:16:48,365 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-11 20:16:48,366 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-11 20:16:48,367 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-11 20:16:48,368 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-11 20:16:48,368 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-11 20:16:48,368 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-11 20:16:48,369 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-11 20:16:48,369 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-11 20:16:48,370 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-11 20:16:48,370 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-04-11 20:16:48,390 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-11 20:16:48,391 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-11 20:16:48,392 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-11 20:16:48,392 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-11 20:16:48,392 INFO L133 SettingsManager]: * Use SBE=true [2018-04-11 20:16:48,392 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-11 20:16:48,392 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-11 20:16:48,393 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-11 20:16:48,393 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-11 20:16:48,393 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-11 20:16:48,393 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-11 20:16:48,393 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-11 20:16:48,393 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-11 20:16:48,393 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-11 20:16:48,394 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-11 20:16:48,394 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-11 20:16:48,394 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-11 20:16:48,394 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-11 20:16:48,394 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-11 20:16:48,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 20:16:48,395 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-11 20:16:48,395 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-11 20:16:48,395 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-11 20:16:48,395 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-04-11 20:16:48,425 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-11 20:16:48,431 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-11 20:16:48,434 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-11 20:16:48,435 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-11 20:16:48,435 INFO L276 PluginConnector]: CDTParser initialized [2018-04-11 20:16:48,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-04-11 20:16:48,799 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGfc19ef0c9 [2018-04-11 20:16:48,884 INFO L287 CDTParser]: IsIndexed: true [2018-04-11 20:16:48,884 INFO L288 CDTParser]: Found 1 translation units. [2018-04-11 20:16:48,884 INFO L168 CDTParser]: Scanning selectionsort_unsafe_false-valid-deref.i [2018-04-11 20:16:48,885 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-11 20:16:48,885 INFO L215 ultiparseSymbolTable]: [2018-04-11 20:16:48,885 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-11 20:16:48,885 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in selectionsort_unsafe_false-valid-deref.i [2018-04-11 20:16:48,885 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSort ('SelectionSort') in selectionsort_unsafe_false-valid-deref.i [2018-04-11 20:16:48,885 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-11 20:16:48,885 INFO L233 ultiparseSymbolTable]: [2018-04-11 20:16:48,948 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGfc19ef0c9 [2018-04-11 20:16:48,950 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-11 20:16:48,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-11 20:16:48,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-11 20:16:48,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-11 20:16:48,956 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-11 20:16:48,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 08:16:48" (1/1) ... [2018-04-11 20:16:48,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c61a6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:16:48, skipping insertion in model container [2018-04-11 20:16:48,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 08:16:48" (1/1) ... [2018-04-11 20:16:48,969 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 20:16:48,978 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 20:16:49,081 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 20:16:49,099 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 20:16:49,103 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-11 20:16:49,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:16:49 WrapperNode [2018-04-11 20:16:49,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-11 20:16:49,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-11 20:16:49,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-11 20:16:49,110 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-11 20:16:49,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:16:49" (1/1) ... [2018-04-11 20:16:49,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:16:49" (1/1) ... [2018-04-11 20:16:49,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:16:49" (1/1) ... [2018-04-11 20:16:49,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:16:49" (1/1) ... [2018-04-11 20:16:49,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:16:49" (1/1) ... [2018-04-11 20:16:49,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:16:49" (1/1) ... [2018-04-11 20:16:49,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:16:49" (1/1) ... [2018-04-11 20:16:49,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-11 20:16:49,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-11 20:16:49,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-11 20:16:49,136 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-11 20:16:49,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:16:49" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 20:16:49,174 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-11 20:16:49,174 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-11 20:16:49,174 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSort [2018-04-11 20:16:49,174 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-11 20:16:49,174 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-11 20:16:49,174 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSort [2018-04-11 20:16:49,174 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-11 20:16:49,174 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-11 20:16:49,174 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-11 20:16:49,174 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-11 20:16:49,175 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-11 20:16:49,175 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-11 20:16:49,175 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-11 20:16:49,448 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-11 20:16:49,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 08:16:49 BoogieIcfgContainer [2018-04-11 20:16:49,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-11 20:16:49,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-11 20:16:49,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-11 20:16:49,451 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-11 20:16:49,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.04 08:16:48" (1/3) ... [2018-04-11 20:16:49,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39287bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 08:16:49, skipping insertion in model container [2018-04-11 20:16:49,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:16:49" (2/3) ... [2018-04-11 20:16:49,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39287bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 08:16:49, skipping insertion in model container [2018-04-11 20:16:49,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 08:16:49" (3/3) ... [2018-04-11 20:16:49,454 INFO L107 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-04-11 20:16:49,460 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-11 20:16:49,465 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-04-11 20:16:49,489 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-11 20:16:49,489 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-11 20:16:49,489 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-11 20:16:49,490 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-11 20:16:49,490 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-11 20:16:49,490 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-11 20:16:49,490 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-11 20:16:49,490 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-11 20:16:49,490 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-11 20:16:49,491 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-11 20:16:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-04-11 20:16:49,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-04-11 20:16:49,511 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:16:49,512 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:16:49,512 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]=== [2018-04-11 20:16:49,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1085542032, now seen corresponding path program 1 times [2018-04-11 20:16:49,516 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 20:16:49,516 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 20:16:49,545 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 20:16:49,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 20:16:49,545 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 20:16:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:16:49,578 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 20:16:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:16:49,597 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:16:49,598 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-04-11 20:16:49,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-04-11 20:16:49,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-04-11 20:16:49,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-11 20:16:49,608 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-04-11 20:16:49,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:16:49,620 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-04-11 20:16:49,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-04-11 20:16:49,620 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-04-11 20:16:49,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:16:49,626 INFO L225 Difference]: With dead ends: 42 [2018-04-11 20:16:49,626 INFO L226 Difference]: Without dead ends: 35 [2018-04-11 20:16:49,627 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 [2018-04-11 20:16:49,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-04-11 20:16:49,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-04-11 20:16:49,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-04-11 20:16:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-04-11 20:16:49,648 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 12 [2018-04-11 20:16:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:16:49,649 INFO L459 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-04-11 20:16:49,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-04-11 20:16:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-04-11 20:16:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-11 20:16:49,649 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:16:49,649 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:16:49,649 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]=== [2018-04-11 20:16:49,649 INFO L82 PathProgramCache]: Analyzing trace with hash 707915582, now seen corresponding path program 1 times [2018-04-11 20:16:49,649 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 20:16:49,650 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 20:16:49,650 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 20:16:49,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 20:16:49,651 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 20:16:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:16:49,663 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 20:16:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:16:49,688 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:16:49,688 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-11 20:16:49,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-11 20:16:49,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-11 20:16:49,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-11 20:16:49,689 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2018-04-11 20:16:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:16:49,702 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-04-11 20:16:49,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-11 20:16:49,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-04-11 20:16:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:16:49,703 INFO L225 Difference]: With dead ends: 37 [2018-04-11 20:16:49,703 INFO L226 Difference]: Without dead ends: 37 [2018-04-11 20:16:49,704 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 [2018-04-11 20:16:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-04-11 20:16:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-04-11 20:16:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-04-11 20:16:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-04-11 20:16:49,706 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 13 [2018-04-11 20:16:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:16:49,706 INFO L459 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-04-11 20:16:49,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-11 20:16:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-04-11 20:16:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-11 20:16:49,706 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:16:49,707 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:16:49,707 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]=== [2018-04-11 20:16:49,707 INFO L82 PathProgramCache]: Analyzing trace with hash 707915628, now seen corresponding path program 1 times [2018-04-11 20:16:49,707 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 20:16:49,707 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 20:16:49,707 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 20:16:49,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 20:16:49,708 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 20:16:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-11 20:16:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-11 20:16:49,741 INFO L421 BasicCegarLoop]: Counterexample might be feasible [2018-04-11 20:16:49,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.04 08:16:49 BoogieIcfgContainer [2018-04-11 20:16:49,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-11 20:16:49,754 INFO L168 Benchmark]: Toolchain (without parser) took 802.97 ms. Allocated memory was 320.3 MB in the beginning and 400.0 MB in the end (delta: 79.7 MB). Free memory was 269.6 MB in the beginning and 332.9 MB in the end (delta: -63.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 5.3 GB. [2018-04-11 20:16:49,755 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 320.3 MB. Free memory is still 290.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-11 20:16:49,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.94 ms. Allocated memory is still 320.3 MB. Free memory was 269.6 MB in the beginning and 259.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-04-11 20:16:49,756 INFO L168 Benchmark]: Boogie Preprocessor took 25.43 ms. Allocated memory is still 320.3 MB. Free memory was 259.0 MB in the beginning and 257.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-04-11 20:16:49,756 INFO L168 Benchmark]: RCFGBuilder took 312.83 ms. Allocated memory was 320.3 MB in the beginning and 400.0 MB in the end (delta: 79.7 MB). Free memory was 256.4 MB in the beginning and 362.6 MB in the end (delta: -106.2 MB). Peak memory consumption was 34.9 MB. Max. memory is 5.3 GB. [2018-04-11 20:16:49,756 INFO L168 Benchmark]: TraceAbstraction took 304.18 ms. Allocated memory is still 400.0 MB. Free memory was 362.6 MB in the beginning and 332.9 MB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 5.3 GB. [2018-04-11 20:16:49,758 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 320.3 MB. Free memory is still 290.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 157.94 ms. Allocated memory is still 320.3 MB. Free memory was 269.6 MB in the beginning and 259.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 25.43 ms. Allocated memory is still 320.3 MB. Free memory was 259.0 MB in the beginning and 257.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 312.83 ms. Allocated memory was 320.3 MB in the beginning and 400.0 MB in the end (delta: 79.7 MB). Free memory was 256.4 MB in the beginning and 362.6 MB in the end (delta: -106.2 MB). Peak memory consumption was 34.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 304.18 ms. Allocated memory is still 400.0 MB. Free memory was 362.6 MB in the beginning and 332.9 MB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 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, 0.2s 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_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-11_20-16-49-764.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_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-11_20-16-49-764.csv Received shutdown request...