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_Camel.epf -i ../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-10 13:29:14,172 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-10 13:29:14,173 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-10 13:29:14,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-10 13:29:14,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-10 13:29:14,188 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-10 13:29:14,189 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-10 13:29:14,191 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-10 13:29:14,192 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-10 13:29:14,193 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-10 13:29:14,194 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-10 13:29:14,194 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-10 13:29:14,195 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-10 13:29:14,196 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-10 13:29:14,197 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-10 13:29:14,198 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-10 13:29:14,200 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-10 13:29:14,201 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-10 13:29:14,202 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-10 13:29:14,203 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-10 13:29:14,204 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-04-10 13:29:14,209 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-10 13:29:14,209 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-10 13:29:14,209 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 [2018-04-10 13:29:14,218 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-10 13:29:14,219 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-10 13:29:14,219 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-10 13:29:14,220 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-10 13:29:14,220 INFO L133 SettingsManager]: * Use SBE=true [2018-04-10 13:29:14,220 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-10 13:29:14,220 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-10 13:29:14,220 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-10 13:29:14,220 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-10 13:29:14,220 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-10 13:29:14,221 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-10 13:29:14,221 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-10 13:29:14,221 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-10 13:29:14,221 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-10 13:29:14,221 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-10 13:29:14,221 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-10 13:29:14,221 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-10 13:29:14,222 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-10 13:29:14,222 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-10 13:29:14,222 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-10 13:29:14,222 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-10 13:29:14,222 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-10 13:29:14,222 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-10 13:29:14,222 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-04-10 13:29:14,249 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-10 13:29:14,258 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-10 13:29:14,261 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-10 13:29:14,262 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-10 13:29:14,262 INFO L276 PluginConnector]: CDTParser initialized [2018-04-10 13:29:14,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-04-10 13:29:14,537 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG5ca49e45e [2018-04-10 13:29:14,613 INFO L287 CDTParser]: IsIndexed: true [2018-04-10 13:29:14,613 INFO L288 CDTParser]: Found 1 translation units. [2018-04-10 13:29:14,613 INFO L168 CDTParser]: Scanning selectionsort_unsafe_false-valid-deref.i [2018-04-10 13:29:14,614 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-10 13:29:14,614 INFO L215 ultiparseSymbolTable]: [2018-04-10 13:29:14,614 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-10 13:29:14,615 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in selectionsort_unsafe_false-valid-deref.i [2018-04-10 13:29:14,615 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSort ('SelectionSort') in selectionsort_unsafe_false-valid-deref.i [2018-04-10 13:29:14,615 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-10 13:29:14,615 INFO L233 ultiparseSymbolTable]: [2018-04-10 13:29:14,627 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG5ca49e45e [2018-04-10 13:29:14,630 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-10 13:29:14,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-10 13:29:14,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-10 13:29:14,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-10 13:29:14,634 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-10 13:29:14,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 01:29:14" (1/1) ... [2018-04-10 13:29:14,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7798103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:29:14, skipping insertion in model container [2018-04-10 13:29:14,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 01:29:14" (1/1) ... [2018-04-10 13:29:14,647 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 13:29:14,654 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 13:29:14,752 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 13:29:14,770 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 13:29:14,774 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-10 13:29:14,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:29:14 WrapperNode [2018-04-10 13:29:14,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-10 13:29:14,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-10 13:29:14,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-10 13:29:14,782 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-10 13:29:14,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:29:14" (1/1) ... [2018-04-10 13:29:14,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:29:14" (1/1) ... [2018-04-10 13:29:14,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:29:14" (1/1) ... [2018-04-10 13:29:14,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:29:14" (1/1) ... [2018-04-10 13:29:14,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:29:14" (1/1) ... [2018-04-10 13:29:14,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:29:14" (1/1) ... [2018-04-10 13:29:14,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:29:14" (1/1) ... [2018-04-10 13:29:14,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-10 13:29:14,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-10 13:29:14,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-10 13:29:14,809 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-10 13:29:14,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:29:14" (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 13:29:14,845 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-10 13:29:14,845 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-10 13:29:14,845 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSort [2018-04-10 13:29:14,845 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-10 13:29:14,845 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-10 13:29:14,845 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fselectionsort_unsafe_false_valid_deref_i__SelectionSort [2018-04-10 13:29:14,846 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-10 13:29:14,846 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-10 13:29:14,846 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-10 13:29:14,846 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-10 13:29:14,846 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-10 13:29:14,846 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-10 13:29:14,846 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-10 13:29:15,042 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-10 13:29:15,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 01:29:15 BoogieIcfgContainer [2018-04-10 13:29:15,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-10 13:29:15,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-10 13:29:15,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-10 13:29:15,045 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-10 13:29:15,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.04 01:29:14" (1/3) ... [2018-04-10 13:29:15,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101f5e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 01:29:15, skipping insertion in model container [2018-04-10 13:29:15,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:29:14" (2/3) ... [2018-04-10 13:29:15,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101f5e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 01:29:15, skipping insertion in model container [2018-04-10 13:29:15,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 01:29:15" (3/3) ... [2018-04-10 13:29:15,047 INFO L107 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-04-10 13:29:15,053 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-10 13:29:15,057 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-04-10 13:29:15,083 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-10 13:29:15,083 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-10 13:29:15,084 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-10 13:29:15,084 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-10 13:29:15,084 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-10 13:29:15,084 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-10 13:29:15,084 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-10 13:29:15,084 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-10 13:29:15,084 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-10 13:29:15,085 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-10 13:29:15,098 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-04-10 13:29:15,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-04-10 13:29:15,107 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:29:15,108 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 13:29:15,108 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 13:29:15,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1085542032, now seen corresponding path program 1 times [2018-04-10 13:29:15,114 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:29:15,114 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:29:15,146 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:29:15,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:29:15,147 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:29:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:29:15,187 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:29:15,209 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 13:29:15,212 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:29:15,212 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-04-10 13:29:15,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-04-10 13:29:15,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-04-10 13:29:15,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-10 13:29:15,225 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-04-10 13:29:15,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:29:15,242 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-04-10 13:29:15,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-04-10 13:29:15,243 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-04-10 13:29:15,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:29:15,251 INFO L225 Difference]: With dead ends: 42 [2018-04-10 13:29:15,252 INFO L226 Difference]: Without dead ends: 35 [2018-04-10 13:29:15,253 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 13:29:15,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-04-10 13:29:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-04-10 13:29:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-04-10 13:29:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-04-10 13:29:15,277 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 12 [2018-04-10 13:29:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:29:15,277 INFO L459 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-04-10 13:29:15,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-04-10 13:29:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-04-10 13:29:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-10 13:29:15,277 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:29:15,278 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 13:29:15,278 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 13:29:15,278 INFO L82 PathProgramCache]: Analyzing trace with hash 707915582, now seen corresponding path program 1 times [2018-04-10 13:29:15,278 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:29:15,278 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:29:15,279 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:29:15,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:29:15,279 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:29:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:29:15,290 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:29:15,322 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 13:29:15,322 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:29:15,322 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-10 13:29:15,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-10 13:29:15,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-10 13:29:15,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-10 13:29:15,324 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2018-04-10 13:29:15,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:29:15,339 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-04-10 13:29:15,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-10 13:29:15,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-04-10 13:29:15,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:29:15,340 INFO L225 Difference]: With dead ends: 37 [2018-04-10 13:29:15,340 INFO L226 Difference]: Without dead ends: 37 [2018-04-10 13:29:15,341 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 13:29:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-04-10 13:29:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-04-10 13:29:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-04-10 13:29:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-04-10 13:29:15,345 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 13 [2018-04-10 13:29:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:29:15,345 INFO L459 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-04-10 13:29:15,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-10 13:29:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-04-10 13:29:15,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-10 13:29:15,346 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:29:15,346 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 13:29:15,346 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 13:29:15,346 INFO L82 PathProgramCache]: Analyzing trace with hash 707915628, now seen corresponding path program 1 times [2018-04-10 13:29:15,346 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:29:15,346 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:29:15,347 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:29:15,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:29:15,347 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:29:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 13:29:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 13:29:15,381 INFO L421 BasicCegarLoop]: Counterexample might be feasible [2018-04-10 13:29:15,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.04 01:29:15 BoogieIcfgContainer [2018-04-10 13:29:15,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-10 13:29:15,396 INFO L168 Benchmark]: Toolchain (without parser) took 765.30 ms. Allocated memory was 384.8 MB in the beginning and 568.3 MB in the end (delta: 183.5 MB). Free memory was 326.7 MB in the beginning and 496.9 MB in the end (delta: -170.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 5.3 GB. [2018-04-10 13:29:15,397 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 384.8 MB. Free memory is still 345.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-10 13:29:15,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.51 ms. Allocated memory is still 384.8 MB. Free memory was 326.7 MB in the beginning and 318.7 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. [2018-04-10 13:29:15,398 INFO L168 Benchmark]: Boogie Preprocessor took 26.72 ms. Allocated memory is still 384.8 MB. Free memory was 318.7 MB in the beginning and 316.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-04-10 13:29:15,398 INFO L168 Benchmark]: RCFGBuilder took 233.92 ms. Allocated memory was 384.8 MB in the beginning and 568.3 MB in the end (delta: 183.5 MB). Free memory was 316.1 MB in the beginning and 529.7 MB in the end (delta: -213.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 5.3 GB. [2018-04-10 13:29:15,399 INFO L168 Benchmark]: TraceAbstraction took 351.66 ms. Allocated memory is still 568.3 MB. Free memory was 529.7 MB in the beginning and 496.9 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 5.3 GB. [2018-04-10 13:29:15,401 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 384.8 MB. Free memory is still 345.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 150.51 ms. Allocated memory is still 384.8 MB. Free memory was 326.7 MB in the beginning and 318.7 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 26.72 ms. Allocated memory is still 384.8 MB. Free memory was 318.7 MB in the beginning and 316.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 233.92 ms. Allocated memory was 384.8 MB in the beginning and 568.3 MB in the end (delta: 183.5 MB). Free memory was 316.1 MB in the beginning and 529.7 MB in the end (delta: -213.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 351.66 ms. Allocated memory is still 568.3 MB. Free memory was 529.7 MB in the beginning and 496.9 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 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_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-10_13-29-15-409.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-0-2018-04-10_13-29-15-409.csv Received shutdown request...