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_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a [2018-01-29 22:33:38,967 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-29 22:33:38,970 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-29 22:33:38,982 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-29 22:33:38,982 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-29 22:33:38,983 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-29 22:33:38,984 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-29 22:33:38,985 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-29 22:33:38,986 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-29 22:33:38,987 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-29 22:33:38,988 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-29 22:33:38,988 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-29 22:33:38,990 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-29 22:33:38,991 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-29 22:33:38,993 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-29 22:33:38,995 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-29 22:33:38,997 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-29 22:33:38,999 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-29 22:33:39,001 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-29 22:33:39,002 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-29 22:33:39,004 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-29 22:33:39,009 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-29 22:33:39,010 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-29 22:33:39,010 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-29 22:33:39,020 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-29 22:33:39,021 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-29 22:33:39,022 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-29 22:33:39,022 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-29 22:33:39,022 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-29 22:33:39,022 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-29 22:33:39,022 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-29 22:33:39,023 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-29 22:33:39,023 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-29 22:33:39,024 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-29 22:33:39,024 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-29 22:33:39,024 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-29 22:33:39,024 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-29 22:33:39,024 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-29 22:33:39,025 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-29 22:33:39,025 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-29 22:33:39,025 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-29 22:33:39,025 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-29 22:33:39,025 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-29 22:33:39,026 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-29 22:33:39,026 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-29 22:33:39,026 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-29 22:33:39,026 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-29 22:33:39,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-29 22:33:39,027 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-29 22:33:39,027 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-29 22:33:39,027 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-29 22:33:39,027 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-29 22:33:39,027 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-29 22:33:39,028 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-29 22:33:39,028 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-29 22:33:39,028 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-29 22:33:39,029 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-29 22:33:39,029 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-29 22:33:39,063 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-29 22:33:39,077 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-29 22:33:39,081 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-29 22:33:39,083 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-29 22:33:39,083 INFO L276 PluginConnector]: CDTParser initialized [2018-01-29 22:33:39,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-01-29 22:33:39,190 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-29 22:33:39,198 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-29 22:33:39,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-29 22:33:39,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-29 22:33:39,208 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-29 22:33:39,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:33:39" (1/1) ... [2018-01-29 22:33:39,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6070fe18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:39, skipping insertion in model container [2018-01-29 22:33:39,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:33:39" (1/1) ... [2018-01-29 22:33:39,224 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 22:33:39,240 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 22:33:39,347 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 22:33:39,362 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 22:33:39,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:39 WrapperNode [2018-01-29 22:33:39,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-29 22:33:39,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-29 22:33:39,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-29 22:33:39,369 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-29 22:33:39,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:39" (1/1) ... [2018-01-29 22:33:39,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:39" (1/1) ... [2018-01-29 22:33:39,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:39" (1/1) ... [2018-01-29 22:33:39,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:39" (1/1) ... [2018-01-29 22:33:39,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:39" (1/1) ... [2018-01-29 22:33:39,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:39" (1/1) ... [2018-01-29 22:33:39,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:39" (1/1) ... [2018-01-29 22:33:39,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-29 22:33:39,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-29 22:33:39,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-29 22:33:39,400 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-29 22:33:39,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:39" (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 [2018-01-29 22:33:39,451 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-29 22:33:39,451 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-29 22:33:39,451 INFO L136 BoogieDeclarations]: Found implementation of procedure SelectionSort [2018-01-29 22:33:39,451 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-29 22:33:39,451 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-29 22:33:39,451 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-29 22:33:39,451 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-29 22:33:39,452 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-29 22:33:39,452 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-29 22:33:39,452 INFO L128 BoogieDeclarations]: Found specification of procedure SelectionSort [2018-01-29 22:33:39,452 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-29 22:33:39,452 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-29 22:33:39,452 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-29 22:33:39,665 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-29 22:33:39,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:33:39 BoogieIcfgContainer [2018-01-29 22:33:39,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-29 22:33:39,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-29 22:33:39,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-29 22:33:39,670 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-29 22:33:39,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:33:39" (1/3) ... [2018-01-29 22:33:39,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ebe98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:33:39, skipping insertion in model container [2018-01-29 22:33:39,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:39" (2/3) ... [2018-01-29 22:33:39,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ebe98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:33:39, skipping insertion in model container [2018-01-29 22:33:39,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:33:39" (3/3) ... [2018-01-29 22:33:39,673 INFO L107 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-01-29 22:33:39,679 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-29 22:33:39,685 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-01-29 22:33:39,722 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-29 22:33:39,723 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-29 22:33:39,723 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-29 22:33:39,723 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-29 22:33:39,723 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-29 22:33:39,723 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-29 22:33:39,723 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-29 22:33:39,724 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-29 22:33:39,724 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-29 22:33:39,741 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-29 22:33:39,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-29 22:33:39,747 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:33:39,748 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:33:39,748 INFO L371 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-29 22:33:39,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1743381907, now seen corresponding path program 1 times [2018-01-29 22:33:39,753 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:33:39,754 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:33:39,794 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:39,794 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:33:39,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:33:39,846 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:33:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 22:33:39,881 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 22:33:39,882 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-29 22:33:39,883 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-29 22:33:39,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-29 22:33:39,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-29 22:33:39,897 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2018-01-29 22:33:39,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:33:39,921 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2018-01-29 22:33:39,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-29 22:33:39,922 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-29 22:33:39,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:33:39,931 INFO L225 Difference]: With dead ends: 114 [2018-01-29 22:33:39,932 INFO L226 Difference]: Without dead ends: 57 [2018-01-29 22:33:39,936 INFO L553 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 [2018-01-29 22:33:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-01-29 22:33:39,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-01-29 22:33:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-29 22:33:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-01-29 22:33:39,971 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 20 [2018-01-29 22:33:39,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:33:39,972 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-01-29 22:33:39,972 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-29 22:33:39,972 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-01-29 22:33:39,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-29 22:33:39,973 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:33:39,974 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:33:39,974 INFO L371 AbstractCegarLoop]: === Iteration 2 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-29 22:33:39,974 INFO L82 PathProgramCache]: Analyzing trace with hash 494820341, now seen corresponding path program 1 times [2018-01-29 22:33:39,974 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:33:39,974 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:33:39,976 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:39,976 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:33:39,976 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:33:40,001 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:33:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 22:33:40,148 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 22:33:40,148 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-29 22:33:40,150 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-29 22:33:40,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-29 22:33:40,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-29 22:33:40,151 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 4 states. [2018-01-29 22:33:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:33:40,289 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2018-01-29 22:33:40,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-29 22:33:40,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-29 22:33:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:33:40,291 INFO L225 Difference]: With dead ends: 101 [2018-01-29 22:33:40,292 INFO L226 Difference]: Without dead ends: 59 [2018-01-29 22:33:40,293 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-29 22:33:40,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-29 22:33:40,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-01-29 22:33:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-01-29 22:33:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-01-29 22:33:40,301 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 25 [2018-01-29 22:33:40,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:33:40,302 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-01-29 22:33:40,302 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-29 22:33:40,302 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-01-29 22:33:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-29 22:33:40,303 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:33:40,303 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:33:40,303 INFO L371 AbstractCegarLoop]: === Iteration 3 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-29 22:33:40,304 INFO L82 PathProgramCache]: Analyzing trace with hash 494820381, now seen corresponding path program 1 times [2018-01-29 22:33:40,304 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:33:40,304 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:33:40,305 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:40,305 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:33:40,305 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-29 22:33:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-29 22:33:40,351 INFO L409 BasicCegarLoop]: Counterexample might be feasible [2018-01-29 22:33:40,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 10:33:40 BoogieIcfgContainer [2018-01-29 22:33:40,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-29 22:33:40,373 INFO L168 Benchmark]: Toolchain (without parser) took 1182.13 ms. Allocated memory was 303.6 MB in the beginning and 463.5 MB in the end (delta: 159.9 MB). Free memory was 264.6 MB in the beginning and 420.2 MB in the end (delta: -155.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:40,374 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 303.6 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-29 22:33:40,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.61 ms. Allocated memory is still 303.6 MB. Free memory was 262.6 MB in the beginning and 254.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:40,375 INFO L168 Benchmark]: Boogie Preprocessor took 30.73 ms. Allocated memory is still 303.6 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:40,376 INFO L168 Benchmark]: RCFGBuilder took 266.11 ms. Allocated memory is still 303.6 MB. Free memory was 252.6 MB in the beginning and 236.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:40,376 INFO L168 Benchmark]: TraceAbstraction took 705.40 ms. Allocated memory was 303.6 MB in the beginning and 463.5 MB in the end (delta: 159.9 MB). Free memory was 234.1 MB in the beginning and 420.2 MB in the end (delta: -186.1 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-29 22:33:40,379 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 303.6 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 169.61 ms. Allocated memory is still 303.6 MB. Free memory was 262.6 MB in the beginning and 254.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.73 ms. Allocated memory is still 303.6 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 266.11 ms. Allocated memory is still 303.6 MB. Free memory was 252.6 MB in the beginning and 236.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 705.40 ms. Allocated memory was 303.6 MB in the beginning and 463.5 MB in the end (delta: 159.9 MB). Free memory was 234.1 MB in the beginning and 420.2 MB in the end (delta: -186.1 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L20] int *a; [L21] int array_size = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=2, array_size=2] [L22] CALL SelectionSort(a, array_size) VAL [\old(array_size)=2, a={2:-5}] [L4] int i; VAL [\old(array_size)=2, a={2:-5}, a={2:-5}, array_size=2] [L5] i = 0 VAL [\old(array_size)=2, a={2:-5}, a={2:-5}, array_size=2, i=0] [L5] COND TRUE i < array_size - 1 VAL [\old(array_size)=2, a={2:-5}, a={2:-5}, array_size=2, i=0] [L7] int j, min, temp; VAL [\old(array_size)=2, a={2:-5}, a={2:-5}, array_size=2, i=0] [L8] min = i VAL [\old(array_size)=2, a={2:-5}, a={2:-5}, array_size=2, i=0, min=0] [L9] j = i+1 VAL [\old(array_size)=2, a={2:-5}, a={2:-5}, array_size=2, i=0, j=1, min=0] [L9] COND TRUE j < array_size VAL [\old(array_size)=2, a={2:-5}, a={2:-5}, array_size=2, i=0, j=1, min=0] [L11] FCALL a[j] VAL [\old(array_size)=2, a={2:-5}, a={2:-5}, array_size=2, i=0, j=1, min=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 65 locations, 13 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 110 SDtfs, 52 SDslu, 45 SDs, 0 SdLazy, 31 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 1609 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-29_22-33-40-387.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-29_22-33-40-387.csv Received shutdown request...