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/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 12:44:24,992 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 12:44:24,994 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 12:44:25,007 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 12:44:25,008 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 12:44:25,009 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 12:44:25,010 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 12:44:25,012 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 12:44:25,013 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 12:44:25,014 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 12:44:25,014 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 12:44:25,015 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 12:44:25,015 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 12:44:25,016 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 12:44:25,017 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 12:44:25,019 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 12:44:25,021 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 12:44:25,023 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 12:44:25,025 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 12:44:25,026 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 12:44:25,028 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 12:44:25,033 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 12:44:25,034 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 12:44:25,034 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf [2018-01-24 12:44:25,044 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 12:44:25,044 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 12:44:25,045 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 12:44:25,045 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 12:44:25,046 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 12:44:25,046 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 12:44:25,046 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 12:44:25,047 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 12:44:25,047 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 12:44:25,047 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 12:44:25,047 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 12:44:25,047 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 12:44:25,047 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 12:44:25,048 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 12:44:25,048 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 12:44:25,048 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 12:44:25,048 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 12:44:25,048 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 12:44:25,049 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 12:44:25,049 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 12:44:25,049 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 12:44:25,049 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 12:44:25,049 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 12:44:25,050 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 12:44:25,050 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 12:44:25,050 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 12:44:25,050 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 12:44:25,051 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 12:44:25,051 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-01-24 12:44:25,051 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 12:44:25,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 12:44:25,051 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 12:44:25,052 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 12:44:25,052 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 12:44:25,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 12:44:25,101 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 12:44:25,105 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 12:44:25,107 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 12:44:25,107 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 12:44:25,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-01-24 12:44:25,243 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 12:44:25,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 12:44:25,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 12:44:25,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 12:44:25,254 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 12:44:25,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:44:25" (1/1) ... [2018-01-24 12:44:25,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2c73c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:44:25, skipping insertion in model container [2018-01-24 12:44:25,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:44:25" (1/1) ... [2018-01-24 12:44:25,273 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:44:25,287 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:44:25,401 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:44:25,416 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:44:25,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:44:25 WrapperNode [2018-01-24 12:44:25,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 12:44:25,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 12:44:25,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 12:44:25,423 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 12:44:25,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:44:25" (1/1) ... [2018-01-24 12:44:25,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:44:25" (1/1) ... [2018-01-24 12:44:25,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:44:25" (1/1) ... [2018-01-24 12:44:25,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:44:25" (1/1) ... [2018-01-24 12:44:25,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:44:25" (1/1) ... [2018-01-24 12:44:25,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:44:25" (1/1) ... [2018-01-24 12:44:25,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:44:25" (1/1) ... [2018-01-24 12:44:25,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 12:44:25,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 12:44:25,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 12:44:25,455 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 12:44:25,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:44:25" (1/1) ... No working directory specified, using /storage/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 [2018-01-24 12:44:25,503 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 12:44:25,503 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 12:44:25,503 INFO L136 BoogieDeclarations]: Found implementation of procedure SelectionSort [2018-01-24 12:44:25,503 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 12:44:25,503 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 12:44:25,503 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 12:44:25,503 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 12:44:25,503 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 12:44:25,503 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 12:44:25,504 INFO L128 BoogieDeclarations]: Found specification of procedure SelectionSort [2018-01-24 12:44:25,504 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 12:44:25,504 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 12:44:25,504 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 12:44:25,722 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 12:44:25,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:44:25 BoogieIcfgContainer [2018-01-24 12:44:25,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 12:44:25,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 12:44:25,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 12:44:25,726 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 12:44:25,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 12:44:25" (1/3) ... [2018-01-24 12:44:25,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab172e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:44:25, skipping insertion in model container [2018-01-24 12:44:25,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:44:25" (2/3) ... [2018-01-24 12:44:25,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab172e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:44:25, skipping insertion in model container [2018-01-24 12:44:25,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:44:25" (3/3) ... [2018-01-24 12:44:25,730 INFO L105 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-01-24 12:44:25,740 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 12:44:25,748 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-01-24 12:44:25,784 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 12:44:25,785 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 12:44:25,785 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 12:44:25,785 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 12:44:25,785 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 12:44:25,785 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 12:44:25,785 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 12:44:25,785 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 12:44:25,786 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 12:44:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-24 12:44:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-24 12:44:25,812 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:44:25,813 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:44:25,814 INFO L371 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 12:44:25,819 INFO L82 PathProgramCache]: Analyzing trace with hash 474885727, now seen corresponding path program 1 times [2018-01-24 12:44:25,822 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 12:44:25,881 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:44:25,882 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:44:25,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:44:25,882 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 12:44:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:44:25,928 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:44:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:44:25,962 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:44:25,963 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 12:44:25,963 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 12:44:25,965 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 12:44:25,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 12:44:25,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 12:44:25,979 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-01-24 12:44:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:44:26,002 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2018-01-24 12:44:26,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 12:44:26,003 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-24 12:44:26,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:44:26,013 INFO L225 Difference]: With dead ends: 77 [2018-01-24 12:44:26,013 INFO L226 Difference]: Without dead ends: 35 [2018-01-24 12:44:26,016 INFO L525 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 [2018-01-24 12:44:26,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-24 12:44:26,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-24 12:44:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-24 12:44:26,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-01-24 12:44:26,050 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 12 [2018-01-24 12:44:26,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:44:26,051 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-01-24 12:44:26,051 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 12:44:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-01-24 12:44:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 12:44:26,051 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:44:26,052 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:44:26,052 INFO L371 AbstractCegarLoop]: === Iteration 2 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 12:44:26,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1836535847, now seen corresponding path program 1 times [2018-01-24 12:44:26,052 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 12:44:26,053 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:44:26,053 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:44:26,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:44:26,054 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 12:44:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:44:26,069 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:44:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:44:26,193 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:44:26,193 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 12:44:26,193 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 12:44:26,195 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 12:44:26,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 12:44:26,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 12:44:26,196 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2018-01-24 12:44:26,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:44:26,241 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2018-01-24 12:44:26,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 12:44:26,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-01-24 12:44:26,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:44:26,243 INFO L225 Difference]: With dead ends: 64 [2018-01-24 12:44:26,243 INFO L226 Difference]: Without dead ends: 37 [2018-01-24 12:44:26,244 INFO L525 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 [2018-01-24 12:44:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-24 12:44:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-01-24 12:44:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-24 12:44:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-01-24 12:44:26,249 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 13 [2018-01-24 12:44:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:44:26,249 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-01-24 12:44:26,249 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 12:44:26,250 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-01-24 12:44:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 12:44:26,250 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:44:26,250 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:44:26,250 INFO L371 AbstractCegarLoop]: === Iteration 3 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 12:44:26,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1836535893, now seen corresponding path program 1 times [2018-01-24 12:44:26,251 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 12:44:26,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:44:26,252 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:44:26,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:44:26,252 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 12:44:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 12:44:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 12:44:26,298 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 12:44:26,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 12:44:26 BoogieIcfgContainer [2018-01-24 12:44:26,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 12:44:26,320 INFO L168 Benchmark]: Toolchain (without parser) took 1076.88 ms. Allocated memory was 300.9 MB in the beginning and 457.2 MB in the end (delta: 156.2 MB). Free memory was 262.0 MB in the beginning and 423.3 MB in the end (delta: -161.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 12:44:26,321 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 300.9 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 12:44:26,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.32 ms. Allocated memory is still 300.9 MB. Free memory was 262.0 MB in the beginning and 252.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-01-24 12:44:26,322 INFO L168 Benchmark]: Boogie Preprocessor took 31.38 ms. Allocated memory is still 300.9 MB. Free memory was 252.9 MB in the beginning and 251.9 MB in the end (delta: 996.7 kB). Peak memory consumption was 996.7 kB. Max. memory is 5.3 GB. [2018-01-24 12:44:26,323 INFO L168 Benchmark]: RCFGBuilder took 267.90 ms. Allocated memory is still 300.9 MB. Free memory was 251.9 MB in the beginning and 235.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 5.3 GB. [2018-01-24 12:44:26,323 INFO L168 Benchmark]: TraceAbstraction took 595.77 ms. Allocated memory was 300.9 MB in the beginning and 457.2 MB in the end (delta: 156.2 MB). Free memory was 235.2 MB in the beginning and 423.3 MB in the end (delta: -188.2 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 12:44:26,326 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 300.9 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 174.32 ms. Allocated memory is still 300.9 MB. Free memory was 262.0 MB in the beginning and 252.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.38 ms. Allocated memory is still 300.9 MB. Free memory was 252.9 MB in the beginning and 251.9 MB in the end (delta: 996.7 kB). Peak memory consumption was 996.7 kB. Max. memory is 5.3 GB. * RCFGBuilder took 267.90 ms. Allocated memory is still 300.9 MB. Free memory was 251.9 MB in the beginning and 235.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 595.77 ms. Allocated memory was 300.9 MB in the beginning and 457.2 MB in the end (delta: 156.2 MB). Free memory was 235.2 MB in the beginning and 423.3 MB in the end (delta: -188.2 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: 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={4:3}] [L4] int i; [L5] i = 0 VAL [\old(array_size)=2, a={4:3}, a={4:3}, 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={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L9] COND TRUE j < array_size VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L11] FCALL a[j] VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 13 error locations. UNSAFE Result, 0.5s 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, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s 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, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_12-44-26-336.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_12-44-26-336.csv Received shutdown request...