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 0.1.23-5f7ec6e [2018-01-31 08:32:46,761 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 08:32:46,763 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 08:32:46,782 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 08:32:46,782 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 08:32:46,783 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 08:32:46,784 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 08:32:46,786 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 08:32:46,789 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 08:32:46,789 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 08:32:46,790 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 08:32:46,791 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 08:32:46,792 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 08:32:46,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 08:32:46,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 08:32:46,797 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 08:32:46,799 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 08:32:46,801 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 08:32:46,802 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 08:32:46,803 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 08:32:46,805 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-31 08:32:46,811 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 08:32:46,811 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 08:32:46,812 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 [2018-01-31 08:32:46,822 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 08:32:46,822 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 08:32:46,823 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 08:32:46,823 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 08:32:46,823 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 08:32:46,823 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 08:32:46,824 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 08:32:46,824 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 08:32:46,824 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 08:32:46,825 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 08:32:46,825 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 08:32:46,825 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 08:32:46,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 08:32:46,825 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-31 08:32:46,826 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-31 08:32:46,826 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-31 08:32:46,826 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 08:32:46,826 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 08:32:46,826 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 08:32:46,827 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 08:32:46,827 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 08:32:46,827 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 08:32:46,827 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 08:32:46,827 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:32:46,828 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 08:32:46,828 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 08:32:46,828 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 08:32:46,828 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 08:32:46,828 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 08:32:46,829 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 08:32:46,829 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 08:32:46,829 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 08:32:46,830 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 08:32:46,830 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 08:32:46,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 08:32:46,892 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 08:32:46,896 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 08:32:46,897 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 08:32:46,898 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 08:32:46,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-01-31 08:32:47,005 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 08:32:47,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 08:32:47,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 08:32:47,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 08:32:47,023 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 08:32:47,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:32:46" (1/1) ... [2018-01-31 08:32:47,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e1eab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:32:47, skipping insertion in model container [2018-01-31 08:32:47,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:32:46" (1/1) ... [2018-01-31 08:32:47,047 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:32:47,067 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:32:47,245 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:32:47,269 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:32:47,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:32:47 WrapperNode [2018-01-31 08:32:47,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 08:32:47,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 08:32:47,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 08:32:47,279 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 08:32:47,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:32:47" (1/1) ... [2018-01-31 08:32:47,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:32:47" (1/1) ... [2018-01-31 08:32:47,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:32:47" (1/1) ... [2018-01-31 08:32:47,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:32:47" (1/1) ... [2018-01-31 08:32:47,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:32:47" (1/1) ... [2018-01-31 08:32:47,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:32:47" (1/1) ... [2018-01-31 08:32:47,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:32:47" (1/1) ... [2018-01-31 08:32:47,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 08:32:47,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 08:32:47,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 08:32:47,329 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 08:32:47,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:32:47" (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 [2018-01-31 08:32:47,399 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 08:32:47,399 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 08:32:47,399 INFO L136 BoogieDeclarations]: Found implementation of procedure SelectionSort [2018-01-31 08:32:47,399 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 08:32:47,399 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 08:32:47,399 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 08:32:47,400 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 08:32:47,400 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 08:32:47,400 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 08:32:47,400 INFO L128 BoogieDeclarations]: Found specification of procedure SelectionSort [2018-01-31 08:32:47,400 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 08:32:47,401 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 08:32:47,401 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 08:32:47,904 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 08:32:47,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:32:47 BoogieIcfgContainer [2018-01-31 08:32:47,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 08:32:47,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 08:32:47,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 08:32:47,909 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 08:32:47,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:32:46" (1/3) ... [2018-01-31 08:32:47,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc4f1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:32:47, skipping insertion in model container [2018-01-31 08:32:47,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:32:47" (2/3) ... [2018-01-31 08:32:47,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc4f1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:32:47, skipping insertion in model container [2018-01-31 08:32:47,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:32:47" (3/3) ... [2018-01-31 08:32:47,913 INFO L107 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-01-31 08:32:47,922 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 08:32:47,932 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-01-31 08:32:47,983 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 08:32:47,984 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 08:32:47,984 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 08:32:47,984 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 08:32:47,984 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 08:32:47,985 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 08:32:47,985 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 08:32:47,985 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 08:32:47,986 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 08:32:48,007 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-31 08:32:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-31 08:32:48,012 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:48,013 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:48,014 INFO L371 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 08:32:48,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1743381907, now seen corresponding path program 1 times [2018-01-31 08:32:48,021 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:48,021 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:48,077 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:48,078 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:32:48,078 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:48,127 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 08:32:48,161 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:32:48,161 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 08:32:48,163 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 08:32:48,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 08:32:48,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:32:48,175 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2018-01-31 08:32:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:48,197 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2018-01-31 08:32:48,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 08:32:48,199 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-31 08:32:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:48,211 INFO L225 Difference]: With dead ends: 114 [2018-01-31 08:32:48,211 INFO L226 Difference]: Without dead ends: 57 [2018-01-31 08:32:48,220 INFO L554 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 [2018-01-31 08:32:48,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-01-31 08:32:48,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-01-31 08:32:48,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-31 08:32:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-01-31 08:32:48,255 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 20 [2018-01-31 08:32:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:48,256 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-01-31 08:32:48,256 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 08:32:48,256 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-01-31 08:32:48,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-31 08:32:48,257 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:48,257 INFO L351 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] [2018-01-31 08:32:48,257 INFO L371 AbstractCegarLoop]: === Iteration 2 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 08:32:48,258 INFO L82 PathProgramCache]: Analyzing trace with hash 494820341, now seen corresponding path program 1 times [2018-01-31 08:32:48,258 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:48,258 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:48,259 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:48,259 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:32:48,260 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:48,289 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 08:32:48,471 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:32:48,471 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-31 08:32:48,473 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 08:32:48,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 08:32:48,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-31 08:32:48,474 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 4 states. [2018-01-31 08:32:48,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:48,729 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2018-01-31 08:32:48,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-31 08:32:48,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-31 08:32:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:48,732 INFO L225 Difference]: With dead ends: 101 [2018-01-31 08:32:48,732 INFO L226 Difference]: Without dead ends: 59 [2018-01-31 08:32:48,734 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-31 08:32:48,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-31 08:32:48,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-01-31 08:32:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-01-31 08:32:48,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-01-31 08:32:48,745 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 25 [2018-01-31 08:32:48,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:48,746 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-01-31 08:32:48,747 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 08:32:48,747 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-01-31 08:32:48,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-31 08:32:48,748 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:48,748 INFO L351 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] [2018-01-31 08:32:48,748 INFO L371 AbstractCegarLoop]: === Iteration 3 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 08:32:48,748 INFO L82 PathProgramCache]: Analyzing trace with hash 494820381, now seen corresponding path program 1 times [2018-01-31 08:32:48,748 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:48,749 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:48,750 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:48,750 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:32:48,750 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-31 08:32:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-31 08:32:48,836 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-01-31 08:32:48,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:32:48 BoogieIcfgContainer [2018-01-31 08:32:48,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 08:32:48,862 INFO L168 Benchmark]: Toolchain (without parser) took 1856.30 ms. Allocated memory was 308.3 MB in the beginning and 472.4 MB in the end (delta: 164.1 MB). Free memory was 269.2 MB in the beginning and 430.5 MB in the end (delta: -161.4 MB). Peak memory consumption was 2.8 MB. Max. memory is 5.3 GB. [2018-01-31 08:32:48,863 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 308.3 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 08:32:48,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.91 ms. Allocated memory is still 308.3 MB. Free memory was 267.2 MB in the beginning and 259.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-31 08:32:48,869 INFO L168 Benchmark]: Boogie Preprocessor took 43.27 ms. Allocated memory is still 308.3 MB. Free memory was 259.2 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-31 08:32:48,869 INFO L168 Benchmark]: RCFGBuilder took 576.38 ms. Allocated memory is still 308.3 MB. Free memory was 257.2 MB in the beginning and 240.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-31 08:32:48,869 INFO L168 Benchmark]: TraceAbstraction took 955.31 ms. Allocated memory was 308.3 MB in the beginning and 472.4 MB in the end (delta: 164.1 MB). Free memory was 238.3 MB in the beginning and 430.5 MB in the end (delta: -192.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 08:32:48,871 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 308.3 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 263.91 ms. Allocated memory is still 308.3 MB. Free memory was 267.2 MB in the beginning and 259.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 43.27 ms. Allocated memory is still 308.3 MB. Free memory was 259.2 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 576.38 ms. Allocated memory is still 308.3 MB. Free memory was 257.2 MB in the beginning and 240.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 955.31 ms. Allocated memory was 308.3 MB in the beginning and 472.4 MB in the end (delta: 164.1 MB). Free memory was 238.3 MB in the beginning and 430.5 MB in the end (delta: -192.3 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, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s 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, 0.1s 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, 0.2s 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-0-2018-01-31_08-32-48-885.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-0-2018-01-31_08-32-48-885.csv Received shutdown request...