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/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 02:47:54,814 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 02:47:54,816 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 02:47:54,830 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 02:47:54,831 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 02:47:54,832 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 02:47:54,836 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 02:47:54,840 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 02:47:54,843 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 02:47:54,844 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 02:47:54,857 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 02:47:54,858 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 02:47:54,859 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 02:47:54,860 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 02:47:54,861 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 02:47:54,863 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 02:47:54,866 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 02:47:54,868 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 02:47:54,869 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 02:47:54,871 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 02:47:54,873 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 02:47:54,880 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-21 02:47:54,890 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 02:47:54,891 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 02:47:54,892 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 02:47:54,892 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 02:47:54,892 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 02:47:54,892 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 02:47:54,893 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 02:47:54,893 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 02:47:54,893 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 02:47:54,894 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 02:47:54,894 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 02:47:54,894 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 02:47:54,894 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 02:47:54,895 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 02:47:54,895 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 02:47:54,895 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 02:47:54,895 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 02:47:54,896 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 02:47:54,896 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 02:47:54,896 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 02:47:54,896 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 02:47:54,896 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 02:47:54,897 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 02:47:54,897 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 02:47:54,897 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 02:47:54,897 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 02:47:54,898 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 02:47:54,898 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 02:47:54,898 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 02:47:54,898 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 02:47:54,898 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 02:47:54,899 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 02:47:54,899 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 02:47:54,899 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 02:47:54,899 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 02:47:54,899 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 02:47:54,899 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 02:47:54,900 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 02:47:54,901 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 02:47:54,901 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 02:47:54,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 02:47:54,948 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 02:47:54,951 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 02:47:54,952 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 02:47:54,952 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 02:47:54,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-01-21 02:47:55,076 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 02:47:55,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 02:47:55,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 02:47:55,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 02:47:55,090 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 02:47:55,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:47:55" (1/1) ... [2018-01-21 02:47:55,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca73ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:47:55, skipping insertion in model container [2018-01-21 02:47:55,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:47:55" (1/1) ... [2018-01-21 02:47:55,106 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:47:55,122 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:47:55,238 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:47:55,256 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:47:55,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:47:55 WrapperNode [2018-01-21 02:47:55,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 02:47:55,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 02:47:55,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 02:47:55,263 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 02:47:55,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:47:55" (1/1) ... [2018-01-21 02:47:55,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:47:55" (1/1) ... [2018-01-21 02:47:55,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:47:55" (1/1) ... [2018-01-21 02:47:55,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:47:55" (1/1) ... [2018-01-21 02:47:55,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:47:55" (1/1) ... [2018-01-21 02:47:55,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:47:55" (1/1) ... [2018-01-21 02:47:55,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:47:55" (1/1) ... [2018-01-21 02:47:55,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 02:47:55,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 02:47:55,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 02:47:55,300 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 02:47:55,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:47:55" (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 [2018-01-21 02:47:55,355 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 02:47:55,355 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 02:47:55,356 INFO L136 BoogieDeclarations]: Found implementation of procedure SelectionSort [2018-01-21 02:47:55,356 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 02:47:55,356 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 02:47:55,356 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 02:47:55,356 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 02:47:55,356 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 02:47:55,356 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 02:47:55,356 INFO L128 BoogieDeclarations]: Found specification of procedure SelectionSort [2018-01-21 02:47:55,356 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 02:47:55,357 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 02:47:55,357 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 02:47:55,658 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 02:47:55,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:47:55 BoogieIcfgContainer [2018-01-21 02:47:55,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 02:47:55,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 02:47:55,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 02:47:55,662 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 02:47:55,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 02:47:55" (1/3) ... [2018-01-21 02:47:55,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b304687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:47:55, skipping insertion in model container [2018-01-21 02:47:55,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:47:55" (2/3) ... [2018-01-21 02:47:55,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b304687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:47:55, skipping insertion in model container [2018-01-21 02:47:55,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:47:55" (3/3) ... [2018-01-21 02:47:55,667 INFO L105 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-01-21 02:47:55,676 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 02:47:55,686 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 02:47:55,751 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:47:55,752 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:47:55,752 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:47:55,752 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:47:55,752 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:47:55,752 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:47:55,752 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:47:55,753 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 02:47:55,753 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:47:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-01-21 02:47:55,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 02:47:55,788 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:47:55,789 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 02:47:55,789 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 02:47:55,795 INFO L82 PathProgramCache]: Analyzing trace with hash 83609, now seen corresponding path program 1 times [2018-01-21 02:47:55,798 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:47:55,848 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:47:55,849 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:47:55,849 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:47:55,849 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:47:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:47:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:47:55,929 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 02:47:55,936 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:47:55,943 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:47:55,943 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:47:55,943 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:47:55,943 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:47:55,944 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:47:55,944 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:47:55,944 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:47:55,944 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == SelectionSortErr0EnsuresViolation======== [2018-01-21 02:47:55,944 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:47:55,945 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-01-21 02:47:55,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 02:47:55,946 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:47:55,946 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:47:55,946 INFO L371 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr0EnsuresViolation]=== [2018-01-21 02:47:55,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1711478396, now seen corresponding path program 1 times [2018-01-21 02:47:55,947 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:47:55,948 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:47:55,948 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:47:55,948 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:47:55,948 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:47:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:47:55,971 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:47:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:47:56,005 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:47:56,005 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:47:56,005 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:47:56,008 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:47:56,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:47:56,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:47:56,024 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-01-21 02:47:56,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:47:56,047 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2018-01-21 02:47:56,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:47:56,048 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-01-21 02:47:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:47:56,055 INFO L225 Difference]: With dead ends: 57 [2018-01-21 02:47:56,055 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 02:47:56,059 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 [2018-01-21 02:47:56,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 02:47:56,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 02:47:56,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 02:47:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 02:47:56,157 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-01-21 02:47:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:47:56,157 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 02:47:56,157 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:47:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 02:47:56,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 02:47:56,160 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:47:56,161 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:47:56,161 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:47:56,161 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:47:56,161 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:47:56,161 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:47:56,161 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:47:56,161 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 02:47:56,161 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:47:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-01-21 02:47:56,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 02:47:56,163 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:47:56,163 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:47:56,164 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:47:56,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1079241774, now seen corresponding path program 1 times [2018-01-21 02:47:56,164 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:47:56,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:47:56,165 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:47:56,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:47:56,165 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:47:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:47:56,178 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:47:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:47:56,192 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:47:56,193 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:47:56,193 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:47:56,193 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:47:56,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:47:56,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:47:56,194 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-01-21 02:47:56,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:47:56,199 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2018-01-21 02:47:56,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:47:56,199 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-21 02:47:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:47:56,203 INFO L225 Difference]: With dead ends: 57 [2018-01-21 02:47:56,204 INFO L226 Difference]: Without dead ends: 30 [2018-01-21 02:47:56,204 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 [2018-01-21 02:47:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-01-21 02:47:56,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-01-21 02:47:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-01-21 02:47:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-01-21 02:47:56,214 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 15 [2018-01-21 02:47:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:47:56,214 INFO L432 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-01-21 02:47:56,215 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:47:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-01-21 02:47:56,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-21 02:47:56,215 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:47:56,215 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:47:56,215 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:47:56,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1138010476, now seen corresponding path program 1 times [2018-01-21 02:47:56,216 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:47:56,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:47:56,217 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:47:56,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:47:56,217 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:47:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:47:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:47:56,242 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 02:47:56,246 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:47:56,247 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:47:56,248 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:47:56,248 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:47:56,254 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:47:56,254 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:47:56,254 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:47:56,255 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:47:56,255 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:47:56,255 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:47:56,255 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:47:56,255 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 02:47:56,255 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:47:56,256 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-01-21 02:47:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 02:47:56,257 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:47:56,257 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:47:56,257 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 02:47:56,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1096093892, now seen corresponding path program 1 times [2018-01-21 02:47:56,257 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:47:56,258 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:47:56,258 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:47:56,258 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:47:56,258 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:47:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:47:56,269 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:47:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:47:56,281 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:47:56,281 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:47:56,281 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:47:56,281 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:47:56,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:47:56,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:47:56,282 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-01-21 02:47:56,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:47:56,287 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2018-01-21 02:47:56,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:47:56,287 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-01-21 02:47:56,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:47:56,287 INFO L225 Difference]: With dead ends: 57 [2018-01-21 02:47:56,287 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 02:47:56,288 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 [2018-01-21 02:47:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 02:47:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 02:47:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 02:47:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 02:47:56,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-01-21 02:47:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:47:56,290 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 02:47:56,290 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:47:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 02:47:56,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 02:47:56,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 02:47:56 BoogieIcfgContainer [2018-01-21 02:47:56,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 02:47:56,294 INFO L168 Benchmark]: Toolchain (without parser) took 1217.35 ms. Allocated memory was 303.6 MB in the beginning and 458.8 MB in the end (delta: 155.2 MB). Free memory was 262.7 MB in the beginning and 420.0 MB in the end (delta: -157.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 02:47:56,296 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 303.6 MB. Free memory is still 267.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 02:47:56,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.45 ms. Allocated memory is still 303.6 MB. Free memory was 262.7 MB in the beginning and 253.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. [2018-01-21 02:47:56,297 INFO L168 Benchmark]: Boogie Preprocessor took 36.48 ms. Allocated memory is still 303.6 MB. Free memory was 253.7 MB in the beginning and 252.7 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. [2018-01-21 02:47:56,298 INFO L168 Benchmark]: RCFGBuilder took 359.17 ms. Allocated memory is still 303.6 MB. Free memory was 252.7 MB in the beginning and 237.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 5.3 GB. [2018-01-21 02:47:56,298 INFO L168 Benchmark]: TraceAbstraction took 633.40 ms. Allocated memory was 303.6 MB in the beginning and 458.8 MB in the end (delta: 155.2 MB). Free memory was 237.4 MB in the beginning and 420.0 MB in the end (delta: -182.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 02:47:56,301 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 303.6 MB. Free memory is still 267.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 180.45 ms. Allocated memory is still 303.6 MB. Free memory was 262.7 MB in the beginning and 253.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.48 ms. Allocated memory is still 303.6 MB. Free memory was 253.7 MB in the beginning and 252.7 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. * RCFGBuilder took 359.17 ms. Allocated memory is still 303.6 MB. Free memory was 252.7 MB in the beginning and 237.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 633.40 ms. Allocated memory was 303.6 MB in the beginning and 458.8 MB in the end (delta: 155.2 MB). Free memory was 237.4 MB in the beginning and 420.0 MB in the end (delta: -182.6 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 34 locations, 4 error locations. UNSAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 2]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: SelectionSortErr0EnsuresViolation CFG has 4 procedures, 34 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L20] int *a; [L21] int array_size = __VERIFIER_nondet_int(); [L22] CALL SelectionSort(a, array_size) VAL [\old(array_size)=0, a={3:2}] [L4] int i; [L5] i = 0 VAL [\old(array_size)=0, a={3:2}, a={3:2}, array_size=0, i=0] [L5] COND FALSE, RET !(i < array_size - 1) VAL [\old(array_size)=0, a={3:2}, a={3:2}, array_size=0, i=0] [L22] SelectionSort(a, array_size) VAL [a={3:2}, array_size=0] [L23] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 34 locations, 4 error locations. UNSAFE Result, 0.0s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 34 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_02-47-56-309.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_02-47-56-309.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_02-47-56-309.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_02-47-56-309.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_02-47-56-309.csv Received shutdown request...