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/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf -i ../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 20:58:54,850 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 20:58:54,852 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 20:58:54,863 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 20:58:54,864 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 20:58:54,864 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 20:58:54,865 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 20:58:54,867 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 20:58:54,868 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 20:58:54,869 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 20:58:54,870 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 20:58:54,870 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 20:58:54,871 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 20:58:54,872 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 20:58:54,873 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 20:58:54,875 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 20:58:54,876 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 20:58:54,878 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 20:58:54,879 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 20:58:54,880 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 20:58:54,882 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 20:58:54,886 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 20:58:54,886 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 20:58:54,887 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-02-02 20:58:54,896 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 20:58:54,896 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 20:58:54,897 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 20:58:54,898 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 20:58:54,898 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 20:58:54,898 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 20:58:54,898 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 20:58:54,898 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 20:58:54,899 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 20:58:54,899 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 20:58:54,899 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 20:58:54,899 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 20:58:54,899 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 20:58:54,899 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 20:58:54,899 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 20:58:54,899 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 20:58:54,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 20:58:54,900 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 20:58:54,900 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 20:58:54,900 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 20:58:54,900 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 20:58:54,900 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 20:58:54,900 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 20:58:54,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 20:58:54,901 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-02 20:58:54,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 20:58:54,936 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 20:58:54,939 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 20:58:54,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 20:58:54,941 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 20:58:54,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-02-02 20:58:55,034 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 20:58:55,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 20:58:55,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 20:58:55,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 20:58:55,041 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 20:58:55,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:58:55" (1/1) ... [2018-02-02 20:58:55,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54def803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:58:55, skipping insertion in model container [2018-02-02 20:58:55,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:58:55" (1/1) ... [2018-02-02 20:58:55,054 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 20:58:55,064 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 20:58:55,154 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 20:58:55,166 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 20:58:55,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:58:55 WrapperNode [2018-02-02 20:58:55,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 20:58:55,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 20:58:55,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 20:58:55,172 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 20:58:55,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:58:55" (1/1) ... [2018-02-02 20:58:55,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:58:55" (1/1) ... [2018-02-02 20:58:55,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:58:55" (1/1) ... [2018-02-02 20:58:55,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:58:55" (1/1) ... [2018-02-02 20:58:55,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:58:55" (1/1) ... [2018-02-02 20:58:55,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:58:55" (1/1) ... [2018-02-02 20:58:55,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:58:55" (1/1) ... [2018-02-02 20:58:55,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 20:58:55,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 20:58:55,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 20:58:55,198 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 20:58:55,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:58:55" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-02-02 20:58:55,232 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 20:58:55,232 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 20:58:55,232 INFO L136 BoogieDeclarations]: Found implementation of procedure SelectionSort [2018-02-02 20:58:55,232 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 20:58:55,232 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 20:58:55,232 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 20:58:55,233 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 20:58:55,233 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 20:58:55,233 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 20:58:55,233 INFO L128 BoogieDeclarations]: Found specification of procedure SelectionSort [2018-02-02 20:58:55,233 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 20:58:55,233 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 20:58:55,233 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 20:58:55,378 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 20:58:55,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:58:55 BoogieIcfgContainer [2018-02-02 20:58:55,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 20:58:55,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 20:58:55,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 20:58:55,381 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 20:58:55,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 08:58:55" (1/3) ... [2018-02-02 20:58:55,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af3145d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:58:55, skipping insertion in model container [2018-02-02 20:58:55,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:58:55" (2/3) ... [2018-02-02 20:58:55,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af3145d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:58:55, skipping insertion in model container [2018-02-02 20:58:55,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:58:55" (3/3) ... [2018-02-02 20:58:55,384 INFO L107 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-02-02 20:58:55,392 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 20:58:55,398 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-02-02 20:58:55,425 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 20:58:55,425 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 20:58:55,425 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 20:58:55,425 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 20:58:55,425 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 20:58:55,426 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 20:58:55,426 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 20:58:55,426 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 20:58:55,427 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 20:58:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-02-02 20:58:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-02 20:58:55,449 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:58:55,450 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:58:55,450 INFO L371 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 20:58:55,454 INFO L82 PathProgramCache]: Analyzing trace with hash 474885727, now seen corresponding path program 1 times [2018-02-02 20:58:55,456 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 20:58:55,457 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 20:58:55,500 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 20:58:55,501 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 20:58:55,501 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 20:58:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:58:55,544 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:58:55,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:58:55,572 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:58:55,572 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 20:58:55,573 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-02 20:58:55,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-02 20:58:55,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 20:58:55,583 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-02-02 20:58:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:58:55,594 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-02-02 20:58:55,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-02 20:58:55,595 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-02-02 20:58:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:58:55,600 INFO L225 Difference]: With dead ends: 42 [2018-02-02 20:58:55,600 INFO L226 Difference]: Without dead ends: 35 [2018-02-02 20:58:55,601 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 [2018-02-02 20:58:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-02 20:58:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-02-02 20:58:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-02-02 20:58:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-02-02 20:58:55,625 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 12 [2018-02-02 20:58:55,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:58:55,626 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-02-02 20:58:55,626 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-02 20:58:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-02-02 20:58:55,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 20:58:55,626 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:58:55,627 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:58:55,627 INFO L371 AbstractCegarLoop]: === Iteration 2 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 20:58:55,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1836535847, now seen corresponding path program 1 times [2018-02-02 20:58:55,627 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 20:58:55,627 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 20:58:55,629 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 20:58:55,629 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 20:58:55,629 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 20:58:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:58:55,645 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:58:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:58:55,731 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:58:55,731 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 20:58:55,732 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 20:58:55,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 20:58:55,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 20:58:55,733 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2018-02-02 20:58:55,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:58:55,768 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-02-02 20:58:55,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 20:58:55,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-02-02 20:58:55,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:58:55,769 INFO L225 Difference]: With dead ends: 37 [2018-02-02 20:58:55,769 INFO L226 Difference]: Without dead ends: 37 [2018-02-02 20:58:55,769 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 20:58:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-02-02 20:58:55,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-02-02 20:58:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-02 20:58:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-02-02 20:58:55,773 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 13 [2018-02-02 20:58:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:58:55,774 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-02-02 20:58:55,774 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 20:58:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-02-02 20:58:55,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 20:58:55,774 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:58:55,775 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:58:55,775 INFO L371 AbstractCegarLoop]: === Iteration 3 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 20:58:55,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1836535893, now seen corresponding path program 1 times [2018-02-02 20:58:55,775 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 20:58:55,775 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 20:58:55,776 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 20:58:55,776 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 20:58:55,776 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 20:58:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 20:58:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 20:58:55,810 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 20:58:55,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 08:58:55 BoogieIcfgContainer [2018-02-02 20:58:55,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 20:58:55,823 INFO L168 Benchmark]: Toolchain (without parser) took 788.80 ms. Allocated memory was 392.2 MB in the beginning and 594.0 MB in the end (delta: 201.9 MB). Free memory was 350.1 MB in the beginning and 557.8 MB in the end (delta: -207.7 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 20:58:55,824 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 392.2 MB. Free memory is still 355.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 20:58:55,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.47 ms. Allocated memory is still 392.2 MB. Free memory was 350.1 MB in the beginning and 342.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-02-02 20:58:55,825 INFO L168 Benchmark]: Boogie Preprocessor took 25.92 ms. Allocated memory is still 392.2 MB. Free memory was 342.0 MB in the beginning and 340.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 20:58:55,826 INFO L168 Benchmark]: RCFGBuilder took 180.57 ms. Allocated memory is still 392.2 MB. Free memory was 340.7 MB in the beginning and 322.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 5.3 GB. [2018-02-02 20:58:55,826 INFO L168 Benchmark]: TraceAbstraction took 444.28 ms. Allocated memory was 392.2 MB in the beginning and 594.0 MB in the end (delta: 201.9 MB). Free memory was 322.1 MB in the beginning and 557.8 MB in the end (delta: -235.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 20:58:55,827 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 392.2 MB. Free memory is still 355.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 135.47 ms. Allocated memory is still 392.2 MB. Free memory was 350.1 MB in the beginning and 342.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 25.92 ms. Allocated memory is still 392.2 MB. Free memory was 342.0 MB in the beginning and 340.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 180.57 ms. Allocated memory is still 392.2 MB. Free memory was 340.7 MB in the beginning and 322.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 444.28 ms. Allocated memory was 392.2 MB in the beginning and 594.0 MB in the end (delta: 201.9 MB). Free memory was 322.1 MB in the beginning and 557.8 MB in the end (delta: -235.6 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(); [L22] CALL SelectionSort(a, array_size) VAL [\old(array_size)=2, a={4:3}] [L4] int i; [L5] i = 0 VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0] [L5] COND TRUE i < array_size - 1 [L7] int j, min, temp; [L8] min = i [L9] j = i+1 VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L9] COND TRUE j < array_size VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L11] FCALL a[j] VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 13 error locations. UNSAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 9 SDslu, 24 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 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, 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, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 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 /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_20-58-55-834.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_20-58-55-834.csv Received shutdown request...