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_imprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:29:23,543 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:29:23,545 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:29:23,559 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:29:23,560 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:29:23,561 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:29:23,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:29:23,564 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:29:23,566 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:29:23,567 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:29:23,567 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-21 00:29:23,588 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_imprecise.epf [2018-01-21 00:29:23,598 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:29:23,598 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:29:23,599 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:29:23,599 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:29:23,599 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:29:23,599 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 00:29:23,600 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:29:23,600 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:29:23,600 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:29:23,600 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:29:23,601 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:29:23,601 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:29:23,601 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:29:23,601 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:29:23,601 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:29:23,602 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:29:23,602 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:29:23,602 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:29:23,602 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:29:23,602 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:29:23,603 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:29:23,603 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:29:23,603 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:29:23,603 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:29:23,603 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:29:23,604 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:29:23,604 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:29:23,604 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:29:23,604 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:29:23,604 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:29:23,605 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:29:23,605 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:29:23,605 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:29:23,605 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:29:23,605 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:29:23,605 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:29:23,606 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:29:23,606 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:29:23,607 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:29:23,643 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:29:23,656 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:29:23,661 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:29:23,663 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:29:23,663 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:29:23,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-01-21 00:29:23,796 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:29:23,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:29:23,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:29:23,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:29:23,810 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:29:23,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:29:23" (1/1) ... [2018-01-21 00:29:23,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0bc597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:23, skipping insertion in model container [2018-01-21 00:29:23,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:29:23" (1/1) ... [2018-01-21 00:29:23,832 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:29:23,852 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:29:23,974 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:29:23,989 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:29:23,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:23 WrapperNode [2018-01-21 00:29:23,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:29:23,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:29:23,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:29:23,997 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:29:24,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:23" (1/1) ... [2018-01-21 00:29:24,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:23" (1/1) ... [2018-01-21 00:29:24,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:23" (1/1) ... [2018-01-21 00:29:24,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:23" (1/1) ... [2018-01-21 00:29:24,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:23" (1/1) ... [2018-01-21 00:29:24,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:23" (1/1) ... [2018-01-21 00:29:24,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:23" (1/1) ... [2018-01-21 00:29:24,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:29:24,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:29:24,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:29:24,033 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:29:24,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:23" (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 00:29:24,081 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:29:24,081 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:29:24,081 INFO L136 BoogieDeclarations]: Found implementation of procedure SelectionSort [2018-01-21 00:29:24,081 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:29:24,081 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:29:24,081 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:29:24,081 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:29:24,081 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:29:24,081 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:29:24,082 INFO L128 BoogieDeclarations]: Found specification of procedure SelectionSort [2018-01-21 00:29:24,082 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:29:24,082 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:29:24,082 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:29:24,231 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:29:24,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:29:24 BoogieIcfgContainer [2018-01-21 00:29:24,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:29:24,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:29:24,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:29:24,234 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:29:24,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:29:23" (1/3) ... [2018-01-21 00:29:24,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297ed85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:29:24, skipping insertion in model container [2018-01-21 00:29:24,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:23" (2/3) ... [2018-01-21 00:29:24,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297ed85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:29:24, skipping insertion in model container [2018-01-21 00:29:24,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:29:24" (3/3) ... [2018-01-21 00:29:24,237 INFO L105 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-01-21 00:29:24,245 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:29:24,251 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 00:29:24,289 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:29:24,289 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:29:24,290 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:29:24,290 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:29:24,290 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:29:24,290 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:29:24,290 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:29:24,290 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:29:24,291 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:29:24,305 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-01-21 00:29:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:29:24,309 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:24,310 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:29:24,311 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:29:24,316 INFO L82 PathProgramCache]: Analyzing trace with hash 83609, now seen corresponding path program 1 times [2018-01-21 00:29:24,319 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:24,371 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:24,371 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:24,371 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:24,371 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:29:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:29:24,426 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:29:24,433 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:29:24,439 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:29:24,439 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:29:24,439 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:29:24,439 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:29:24,439 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:29:24,440 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:29:24,440 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:29:24,440 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == SelectionSortErr0EnsuresViolation======== [2018-01-21 00:29:24,440 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:29:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-01-21 00:29:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 00:29:24,442 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:24,442 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:29:24,443 INFO L371 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr0EnsuresViolation]=== [2018-01-21 00:29:24,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1711478396, now seen corresponding path program 1 times [2018-01-21 00:29:24,443 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:24,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:24,444 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:24,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:24,444 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:24,466 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:29:24,491 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 00:29:24,493 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:24,493 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:29:24,493 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:24,495 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:29:24,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:29:24,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:29:24,508 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-01-21 00:29:24,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:24,534 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2018-01-21 00:29:24,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:29:24,535 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-01-21 00:29:24,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:24,544 INFO L225 Difference]: With dead ends: 57 [2018-01-21 00:29:24,544 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:29:24,547 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 00:29:24,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:29:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:29:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:29:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:29:24,635 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-01-21 00:29:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:24,635 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:29:24,635 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:29:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:29:24,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:29:24,638 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:29:24,638 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:29:24,638 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:29:24,638 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:29:24,638 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:29:24,639 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:29:24,639 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:29:24,639 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:29:24,639 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:29:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-01-21 00:29:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 00:29:24,642 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:24,642 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:29:24,642 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:29:24,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1079241774, now seen corresponding path program 1 times [2018-01-21 00:29:24,643 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:24,644 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:24,644 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:24,644 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:24,644 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:24,656 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:29:24,669 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 00:29:24,670 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:24,670 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:29:24,670 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:24,670 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:29:24,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:29:24,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:29:24,671 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-01-21 00:29:24,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:24,676 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2018-01-21 00:29:24,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:29:24,676 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-21 00:29:24,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:24,680 INFO L225 Difference]: With dead ends: 57 [2018-01-21 00:29:24,680 INFO L226 Difference]: Without dead ends: 30 [2018-01-21 00:29:24,680 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 00:29:24,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-01-21 00:29:24,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-01-21 00:29:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-01-21 00:29:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-01-21 00:29:24,691 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 15 [2018-01-21 00:29:24,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:24,692 INFO L432 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-01-21 00:29:24,692 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:29:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-01-21 00:29:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-21 00:29:24,693 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:24,693 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:29:24,693 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:29:24,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1138010476, now seen corresponding path program 1 times [2018-01-21 00:29:24,693 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:24,694 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:24,695 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:24,695 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:24,695 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:29:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:29:24,725 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:29:24,729 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:29:24,731 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:29:24,731 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:29:24,732 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:29:24,739 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:29:24,740 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:29:24,740 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:29:24,740 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:29:24,740 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:29:24,740 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:29:24,740 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:29:24,740 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:29:24,740 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:29:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-01-21 00:29:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 00:29:24,743 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:24,743 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:29:24,743 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 00:29:24,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1096093892, now seen corresponding path program 1 times [2018-01-21 00:29:24,744 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:24,745 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:24,745 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:24,745 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:24,745 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:24,755 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:29:24,767 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 00:29:24,768 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:24,768 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:29:24,768 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:24,768 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:29:24,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:29:24,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:29:24,769 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-01-21 00:29:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:24,774 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2018-01-21 00:29:24,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:29:24,774 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-01-21 00:29:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:24,775 INFO L225 Difference]: With dead ends: 57 [2018-01-21 00:29:24,775 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:29:24,776 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 00:29:24,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:29:24,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:29:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:29:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:29:24,777 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-01-21 00:29:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:24,777 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:29:24,777 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:29:24,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:29:24,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:29:24,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:29:24 BoogieIcfgContainer [2018-01-21 00:29:24,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:29:24,781 INFO L168 Benchmark]: Toolchain (without parser) took 984.09 ms. Allocated memory was 307.2 MB in the beginning and 467.7 MB in the end (delta: 160.4 MB). Free memory was 266.4 MB in the beginning and 429.3 MB in the end (delta: -162.9 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:29:24,782 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 307.2 MB. Free memory is still 271.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:29:24,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.58 ms. Allocated memory is still 307.2 MB. Free memory was 266.4 MB in the beginning and 257.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:29:24,783 INFO L168 Benchmark]: Boogie Preprocessor took 35.90 ms. Allocated memory is still 307.2 MB. Free memory was 257.4 MB in the beginning and 256.4 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. [2018-01-21 00:29:24,784 INFO L168 Benchmark]: RCFGBuilder took 199.67 ms. Allocated memory is still 307.2 MB. Free memory was 256.4 MB in the beginning and 241.1 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 5.3 GB. [2018-01-21 00:29:24,784 INFO L168 Benchmark]: TraceAbstraction took 547.36 ms. Allocated memory was 307.2 MB in the beginning and 467.7 MB in the end (delta: 160.4 MB). Free memory was 241.1 MB in the beginning and 429.3 MB in the end (delta: -188.2 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:29:24,788 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 307.2 MB. Free memory is still 271.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 193.58 ms. Allocated memory is still 307.2 MB. Free memory was 266.4 MB in the beginning and 257.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.90 ms. Allocated memory is still 307.2 MB. Free memory was 257.4 MB in the beginning and 256.4 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. * RCFGBuilder took 199.67 ms. Allocated memory is still 307.2 MB. Free memory was 256.4 MB in the beginning and 241.1 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 547.36 ms. Allocated memory was 307.2 MB in the beginning and 467.7 MB in the end (delta: 160.4 MB). Free memory was 241.1 MB in the beginning and 429.3 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.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, 0.1s 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, 0.1s 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, 0.1s 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_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-29-24-799.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_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-29-24-799.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_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-29-24-799.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_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-29-24-799.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_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_00-29-24-799.csv Received shutdown request...