java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/bubblesort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 15:10:18,478 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 15:10:18,508 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 15:10:18,524 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 15:10:18,524 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 15:10:18,525 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 15:10:18,526 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 15:10:18,528 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 15:10:18,530 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 15:10:18,531 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 15:10:18,532 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 15:10:18,532 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 15:10:18,533 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 15:10:18,534 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 15:10:18,535 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 15:10:18,537 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 15:10:18,540 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 15:10:18,542 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 15:10:18,543 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 15:10:18,545 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 15:10:18,547 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 15:10:18,547 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 15:10:18,547 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 15:10:18,549 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 15:10:18,549 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 15:10:18,551 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 15:10:18,551 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 15:10:18,552 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 15:10:18,552 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 15:10:18,552 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 15:10:18,553 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 15:10:18,553 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf [2018-01-24 15:10:18,562 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 15:10:18,562 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 15:10:18,563 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 15:10:18,563 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 15:10:18,563 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 15:10:18,564 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 15:10:18,564 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 15:10:18,564 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 15:10:18,564 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 15:10:18,564 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 15:10:18,564 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 15:10:18,565 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 15:10:18,565 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 15:10:18,565 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 15:10:18,565 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 15:10:18,565 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 15:10:18,565 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 15:10:18,565 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 15:10:18,566 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 15:10:18,566 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 15:10:18,566 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 15:10:18,566 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 15:10:18,566 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 15:10:18,566 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 15:10:18,567 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 15:10:18,567 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 15:10:18,567 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 15:10:18,567 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 15:10:18,567 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 15:10:18,567 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 15:10:18,568 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 15:10:18,568 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 15:10:18,568 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 15:10:18,568 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 15:10:18,569 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 15:10:18,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 15:10:18,613 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 15:10:18,617 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 15:10:18,618 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 15:10:18,618 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 15:10:18,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/bubblesort_unsafe_false-valid-deref.i [2018-01-24 15:10:18,737 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 15:10:18,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 15:10:18,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 15:10:18,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 15:10:18,747 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 15:10:18,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:10:18" (1/1) ... [2018-01-24 15:10:18,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2c73c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:10:18, skipping insertion in model container [2018-01-24 15:10:18,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:10:18" (1/1) ... [2018-01-24 15:10:18,765 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:10:18,779 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:10:18,893 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:10:18,910 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:10:18,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:10:18 WrapperNode [2018-01-24 15:10:18,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 15:10:18,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 15:10:18,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 15:10:18,916 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 15:10:18,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:10:18" (1/1) ... [2018-01-24 15:10:18,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:10:18" (1/1) ... [2018-01-24 15:10:18,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:10:18" (1/1) ... [2018-01-24 15:10:18,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:10:18" (1/1) ... [2018-01-24 15:10:18,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:10:18" (1/1) ... [2018-01-24 15:10:18,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:10:18" (1/1) ... [2018-01-24 15:10:18,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:10:18" (1/1) ... [2018-01-24 15:10:18,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 15:10:18,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 15:10:18,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 15:10:18,946 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 15:10:18,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:10:18" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 15:10:18,992 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 15:10:18,992 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 15:10:18,992 INFO L136 BoogieDeclarations]: Found implementation of procedure bubbleSort [2018-01-24 15:10:18,992 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 15:10:18,992 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 15:10:18,992 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 15:10:18,993 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 15:10:18,993 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 15:10:18,993 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 15:10:18,993 INFO L128 BoogieDeclarations]: Found specification of procedure bubbleSort [2018-01-24 15:10:18,993 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 15:10:18,993 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 15:10:18,993 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 15:10:19,198 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 15:10:19,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:10:19 BoogieIcfgContainer [2018-01-24 15:10:19,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 15:10:19,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 15:10:19,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 15:10:19,201 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 15:10:19,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 03:10:18" (1/3) ... [2018-01-24 15:10:19,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ebcd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:10:19, skipping insertion in model container [2018-01-24 15:10:19,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:10:18" (2/3) ... [2018-01-24 15:10:19,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ebcd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:10:19, skipping insertion in model container [2018-01-24 15:10:19,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:10:19" (3/3) ... [2018-01-24 15:10:19,205 INFO L105 eAbstractionObserver]: Analyzing ICFG bubblesort_unsafe_false-valid-deref.i [2018-01-24 15:10:19,213 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 15:10:19,234 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-01-24 15:10:19,277 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 15:10:19,277 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 15:10:19,277 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 15:10:19,278 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 15:10:19,278 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 15:10:19,278 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 15:10:19,278 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 15:10:19,278 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 15:10:19,279 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 15:10:19,301 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-24 15:10:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 15:10:19,308 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:10:19,309 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:10:19,310 INFO L371 AbstractCegarLoop]: === Iteration 1 === [bubbleSortErr7RequiresViolation, bubbleSortErr11RequiresViolation, bubbleSortErr0RequiresViolation, bubbleSortErr3RequiresViolation, bubbleSortErr9RequiresViolation, bubbleSortErr1RequiresViolation, bubbleSortErr2RequiresViolation, bubbleSortErr8RequiresViolation, bubbleSortErr6RequiresViolation, bubbleSortErr10RequiresViolation, bubbleSortErr4RequiresViolation, bubbleSortErr5RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 15:10:19,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1618604079, now seen corresponding path program 1 times [2018-01-24 15:10:19,318 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:10:19,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:10:19,378 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:10:19,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:10:19,378 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:10:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:10:19,437 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:10:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:10:19,474 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:10:19,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 15:10:19,475 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:10:19,478 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 15:10:19,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 15:10:19,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 15:10:19,496 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-01-24 15:10:19,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:10:19,522 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2018-01-24 15:10:19,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 15:10:19,523 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-01-24 15:10:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:10:19,535 INFO L225 Difference]: With dead ends: 77 [2018-01-24 15:10:19,535 INFO L226 Difference]: Without dead ends: 35 [2018-01-24 15:10:19,539 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 15:10:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-24 15:10:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-24 15:10:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-24 15:10:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-01-24 15:10:19,578 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2018-01-24 15:10:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:10:19,579 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-01-24 15:10:19,579 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 15:10:19,579 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-01-24 15:10:19,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 15:10:19,580 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:10:19,580 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:10:19,580 INFO L371 AbstractCegarLoop]: === Iteration 2 === [bubbleSortErr7RequiresViolation, bubbleSortErr11RequiresViolation, bubbleSortErr0RequiresViolation, bubbleSortErr3RequiresViolation, bubbleSortErr9RequiresViolation, bubbleSortErr1RequiresViolation, bubbleSortErr2RequiresViolation, bubbleSortErr8RequiresViolation, bubbleSortErr6RequiresViolation, bubbleSortErr10RequiresViolation, bubbleSortErr4RequiresViolation, bubbleSortErr5RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 15:10:19,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1573832596, now seen corresponding path program 1 times [2018-01-24 15:10:19,581 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:10:19,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:10:19,582 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:10:19,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:10:19,582 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:10:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 15:10:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 15:10:19,714 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 15:10:19,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 03:10:19 BoogieIcfgContainer [2018-01-24 15:10:19,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 15:10:19,734 INFO L168 Benchmark]: Toolchain (without parser) took 996.06 ms. Allocated memory was 305.7 MB in the beginning and 463.5 MB in the end (delta: 157.8 MB). Free memory was 266.7 MB in the beginning and 436.0 MB in the end (delta: -169.3 MB). Peak memory consumption was 65.8 MB. Max. memory is 5.3 GB. [2018-01-24 15:10:19,735 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 305.7 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 15:10:19,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.91 ms. Allocated memory is still 305.7 MB. Free memory was 266.7 MB in the beginning and 257.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-01-24 15:10:19,736 INFO L168 Benchmark]: Boogie Preprocessor took 29.71 ms. Allocated memory is still 305.7 MB. Free memory was 257.6 MB in the beginning and 256.6 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. [2018-01-24 15:10:19,736 INFO L168 Benchmark]: RCFGBuilder took 252.95 ms. Allocated memory is still 305.7 MB. Free memory was 256.6 MB in the beginning and 239.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 5.3 GB. [2018-01-24 15:10:19,737 INFO L168 Benchmark]: TraceAbstraction took 533.34 ms. Allocated memory was 305.7 MB in the beginning and 463.5 MB in the end (delta: 157.8 MB). Free memory was 239.8 MB in the beginning and 436.0 MB in the end (delta: -196.1 MB). Peak memory consumption was 38.9 MB. Max. memory is 5.3 GB. [2018-01-24 15:10:19,740 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 305.7 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 173.91 ms. Allocated memory is still 305.7 MB. Free memory was 266.7 MB in the beginning and 257.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.71 ms. Allocated memory is still 305.7 MB. Free memory was 257.6 MB in the beginning and 256.6 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. * RCFGBuilder took 252.95 ms. Allocated memory is still 305.7 MB. Free memory was 256.6 MB in the beginning and 239.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 533.34 ms. Allocated memory was 305.7 MB in the beginning and 463.5 MB in the end (delta: 157.8 MB). Free memory was 239.8 MB in the beginning and 436.0 MB in the end (delta: -196.1 MB). Peak memory consumption was 38.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L16] int* numbers; [L17] int array_size = __VERIFIER_nondet_int(); [L18] CALL bubbleSort(numbers, array_size) VAL [\old(array_size)=2, numbers={4:3}] [L4] int i, j, temp; [L5] i = (array_size - 1) VAL [\old(array_size)=2, array_size=2, i=1, numbers={4:3}, numbers={4:3}] [L5] COND TRUE i >= 0 [L6] j = 1 VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={4:3}, numbers={4:3}] [L6] COND TRUE j <= i VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={4:3}, numbers={4:3}] [L7] FCALL numbers[j-1] VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={4:3}, numbers={4:3}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 13 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 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=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 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/bubblesort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_15-10-19-748.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bubblesort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_15-10-19-748.csv Received shutdown request...