java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf -i ../../../trunk/examples/svcomp/array-memsafety/bubblesort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-10 16:57:42,641 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-10 16:57:42,642 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-10 16:57:42,655 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-10 16:57:42,656 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-10 16:57:42,656 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-10 16:57:42,657 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-10 16:57:42,658 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-10 16:57:42,659 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-10 16:57:42,660 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-10 16:57:42,661 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-10 16:57:42,661 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-10 16:57:42,662 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-10 16:57:42,663 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-10 16:57:42,664 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-10 16:57:42,665 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-10 16:57:42,667 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-10 16:57:42,668 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-10 16:57:42,669 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-10 16:57:42,670 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-10 16:57:42,672 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-10 16:57:42,672 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-10 16:57:42,673 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-10 16:57:42,674 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-10 16:57:42,674 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-10 16:57:42,675 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-10 16:57:42,676 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-10 16:57:42,676 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-10 16:57:42,677 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-10 16:57:42,677 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-10 16:57:42,678 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-10 16:57:42,678 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf [2018-04-10 16:57:42,696 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-10 16:57:42,697 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-10 16:57:42,698 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-10 16:57:42,698 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-10 16:57:42,698 INFO L133 SettingsManager]: * Use SBE=true [2018-04-10 16:57:42,698 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-10 16:57:42,699 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-10 16:57:42,699 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-10 16:57:42,699 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-10 16:57:42,699 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-10 16:57:42,699 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-10 16:57:42,699 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-10 16:57:42,700 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-10 16:57:42,700 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-10 16:57:42,700 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-10 16:57:42,700 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-10 16:57:42,700 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-10 16:57:42,700 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-10 16:57:42,700 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-10 16:57:42,701 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-10 16:57:42,701 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-10 16:57:42,701 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-04-10 16:57:42,701 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-04-10 16:57:42,701 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-10 16:57:42,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-10 16:57:42,736 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-10 16:57:42,741 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-10 16:57:42,743 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-10 16:57:42,743 INFO L276 PluginConnector]: CDTParser initialized [2018-04-10 16:57:42,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/bubblesort_unsafe_false-valid-deref.i [2018-04-10 16:57:43,046 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGa7fe72467 [2018-04-10 16:57:43,137 INFO L287 CDTParser]: IsIndexed: true [2018-04-10 16:57:43,137 INFO L288 CDTParser]: Found 1 translation units. [2018-04-10 16:57:43,137 INFO L168 CDTParser]: Scanning bubblesort_unsafe_false-valid-deref.i [2018-04-10 16:57:43,138 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-10 16:57:43,138 INFO L215 ultiparseSymbolTable]: [2018-04-10 16:57:43,138 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-10 16:57:43,138 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in bubblesort_unsafe_false-valid-deref.i [2018-04-10 16:57:43,138 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSort ('bubbleSort') in bubblesort_unsafe_false-valid-deref.i [2018-04-10 16:57:43,139 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-10 16:57:43,139 INFO L233 ultiparseSymbolTable]: [2018-04-10 16:57:43,168 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGa7fe72467 [2018-04-10 16:57:43,171 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-10 16:57:43,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-10 16:57:43,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-10 16:57:43,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-10 16:57:43,176 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-10 16:57:43,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 04:57:43" (1/1) ... [2018-04-10 16:57:43,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7636d4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:43, skipping insertion in model container [2018-04-10 16:57:43,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 04:57:43" (1/1) ... [2018-04-10 16:57:43,191 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 16:57:43,199 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 16:57:43,297 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 16:57:43,312 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 16:57:43,316 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-10 16:57:43,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:43 WrapperNode [2018-04-10 16:57:43,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-10 16:57:43,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-10 16:57:43,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-10 16:57:43,321 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-10 16:57:43,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:43" (1/1) ... [2018-04-10 16:57:43,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:43" (1/1) ... [2018-04-10 16:57:43,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:43" (1/1) ... [2018-04-10 16:57:43,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:43" (1/1) ... [2018-04-10 16:57:43,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:43" (1/1) ... [2018-04-10 16:57:43,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:43" (1/1) ... [2018-04-10 16:57:43,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:43" (1/1) ... [2018-04-10 16:57:43,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-10 16:57:43,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-10 16:57:43,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-10 16:57:43,342 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-10 16:57:43,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:43" (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 16:57:43,377 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-10 16:57:43,377 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-10 16:57:43,377 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSort [2018-04-10 16:57:43,377 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-10 16:57:43,377 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-10 16:57:43,377 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSort [2018-04-10 16:57:43,377 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-10 16:57:43,378 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-10 16:57:43,378 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-10 16:57:43,378 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-10 16:57:43,378 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-10 16:57:43,378 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-10 16:57:43,378 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-10 16:57:43,561 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-10 16:57:43,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 04:57:43 BoogieIcfgContainer [2018-04-10 16:57:43,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-10 16:57:43,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-10 16:57:43,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-10 16:57:43,564 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-10 16:57:43,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.04 04:57:43" (1/3) ... [2018-04-10 16:57:43,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3c16b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 04:57:43, skipping insertion in model container [2018-04-10 16:57:43,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:43" (2/3) ... [2018-04-10 16:57:43,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3c16b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 04:57:43, skipping insertion in model container [2018-04-10 16:57:43,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 04:57:43" (3/3) ... [2018-04-10 16:57:43,567 INFO L107 eAbstractionObserver]: Analyzing ICFG bubblesort_unsafe_false-valid-deref.i [2018-04-10 16:57:43,575 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-04-10 16:57:43,581 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-04-10 16:57:43,608 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-10 16:57:43,608 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-10 16:57:43,609 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-10 16:57:43,609 INFO L371 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-04-10 16:57:43,609 INFO L372 AbstractCegarLoop]: Backedges is CANONICAL [2018-04-10 16:57:43,609 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-10 16:57:43,609 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-10 16:57:43,609 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-10 16:57:43,610 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-10 16:57:43,610 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-10 16:57:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-04-10 16:57:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-10 16:57:43,630 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 16:57:43,631 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 16:57:43,631 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr9RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr7RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr10RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr2RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr5RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr3RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr4RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr11RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr8RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr1RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr0RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr6RequiresViolation, mainErr0EnsuresViolationMEMORY_LEAK]=== [2018-04-10 16:57:43,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1618604079, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-10 16:57:43,651 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 16:57:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 16:57:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 16:57:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 16:57:43,704 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 16:57:43,723 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 16:57:43,723 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-10 16:57:43,724 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-04-10 16:57:43,724 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 16:57:43,724 INFO L182 omatonBuilderFactory]: Interpolants [55#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 56#(= |#memory_int| |old(#memory_int)|), 46#true, 47#false] [2018-04-10 16:57:43,724 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 16:57:43,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-10 16:57:43,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-10 16:57:43,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-10 16:57:43,734 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2018-04-10 16:57:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 16:57:43,871 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2018-04-10 16:57:43,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-10 16:57:43,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-04-10 16:57:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 16:57:43,881 INFO L225 Difference]: With dead ends: 70 [2018-04-10 16:57:43,881 INFO L226 Difference]: Without dead ends: 58 [2018-04-10 16:57:43,883 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-10 16:57:43,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-04-10 16:57:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 35. [2018-04-10 16:57:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-04-10 16:57:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-04-10 16:57:43,909 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2018-04-10 16:57:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 16:57:43,909 INFO L459 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-04-10 16:57:43,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-10 16:57:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-04-10 16:57:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-10 16:57:43,910 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 16:57:43,910 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 16:57:43,910 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr9RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr7RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr10RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr2RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr5RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr3RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr4RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr11RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr8RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr1RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr0RequiresViolation, __U_MULTI_fbubblesort_unsafe_false_valid_deref_i__bubbleSortErr6RequiresViolation, mainErr0EnsuresViolationMEMORY_LEAK]=== [2018-04-10 16:57:43,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1573832596, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-10 16:57:43,921 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 16:57:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 16:57:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 16:57:43,972 INFO L421 BasicCegarLoop]: Counterexample might be feasible [2018-04-10 16:57:43,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.04 04:57:43 BoogieIcfgContainer [2018-04-10 16:57:43,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-10 16:57:43,989 INFO L168 Benchmark]: Toolchain (without parser) took 817.44 ms. Allocated memory was 401.1 MB in the beginning and 615.5 MB in the end (delta: 214.4 MB). Free memory was 338.3 MB in the beginning and 530.3 MB in the end (delta: -192.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:43,990 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 401.1 MB. Free memory is still 361.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-10 16:57:43,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.25 ms. Allocated memory is still 401.1 MB. Free memory was 338.3 MB in the beginning and 329.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:43,991 INFO L168 Benchmark]: Boogie Preprocessor took 20.94 ms. Allocated memory is still 401.1 MB. Free memory was 329.0 MB in the beginning and 327.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:43,992 INFO L168 Benchmark]: RCFGBuilder took 220.14 ms. Allocated memory was 401.1 MB in the beginning and 615.5 MB in the end (delta: 214.4 MB). Free memory was 327.7 MB in the beginning and 579.0 MB in the end (delta: -251.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:43,993 INFO L168 Benchmark]: TraceAbstraction took 425.57 ms. Allocated memory is still 615.5 MB. Free memory was 577.4 MB in the beginning and 530.3 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:43,995 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 401.1 MB. Free memory is still 361.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 148.25 ms. Allocated memory is still 401.1 MB. Free memory was 338.3 MB in the beginning and 329.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 20.94 ms. Allocated memory is still 401.1 MB. Free memory was 329.0 MB in the beginning and 327.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. * RCFGBuilder took 220.14 ms. Allocated memory was 401.1 MB in the beginning and 615.5 MB in the end (delta: 214.4 MB). Free memory was 327.7 MB in the beginning and 579.0 MB in the end (delta: -251.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 425.57 ms. Allocated memory is still 615.5 MB. Free memory was 577.4 MB in the beginning and 530.3 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L16] int* numbers; [L17] int array_size = __VERIFIER_nondet_int(); [L18] CALL bubbleSort(numbers, array_size) VAL [\old(array_size)=2, numbers={0:7}] [L4] int i, j, temp; [L5] i = (array_size - 1) VAL [\old(array_size)=2, array_size=2, i=1, numbers={0:7}, numbers={0:7}] [L5] COND TRUE i >= 0 [L6] j = 1 VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={0:7}, numbers={0:7}] [L6] COND TRUE j <= i VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={0:7}, numbers={0:7}] [L7] FCALL numbers[j-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 13 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 94 SDslu, 3 SDs, 0 SdLazy, 53 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 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, 1 MinimizatonAttempts, 23 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bubblesort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-10_16-57-44-003.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bubblesort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-10_16-57-44-003.csv Received shutdown request...