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/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf -i ../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 09:46:32,857 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 09:46:32,858 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 09:46:32,871 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 09:46:32,871 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 09:46:32,871 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 09:46:32,872 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 09:46:32,874 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 09:46:32,875 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 09:46:32,876 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 09:46:32,877 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 09:46:32,877 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 09:46:32,878 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 09:46:32,879 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 09:46:32,879 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 09:46:32,881 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 09:46:32,883 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 09:46:32,884 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 09:46:32,885 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 09:46:32,886 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 09:46:32,888 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 09:46:32,893 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf [2018-02-02 09:46:32,902 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 09:46:32,902 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 09:46:32,903 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 09:46:32,903 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 09:46:32,903 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 09:46:32,904 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 09:46:32,904 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 09:46:32,904 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 09:46:32,904 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 09:46:32,904 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 09:46:32,904 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 09:46:32,904 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 09:46:32,905 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 09:46:32,905 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 09:46:32,905 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 09:46:32,905 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 09:46:32,905 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 09:46:32,905 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 09:46:32,905 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 09:46:32,906 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 09:46:32,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 09:46:32,906 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 09:46:32,906 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-02-02 09:46:32,934 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 09:46:32,942 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 09:46:32,945 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 09:46:32,945 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 09:46:32,946 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 09:46:32,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-02-02 09:46:33,050 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 09:46:33,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 09:46:33,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 09:46:33,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 09:46:33,061 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 09:46:33,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:46:33" (1/1) ... [2018-02-02 09:46:33,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674bdcbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:33, skipping insertion in model container [2018-02-02 09:46:33,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:46:33" (1/1) ... [2018-02-02 09:46:33,082 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:46:33,097 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:46:33,194 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:46:33,206 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:46:33,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:33 WrapperNode [2018-02-02 09:46:33,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 09:46:33,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 09:46:33,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 09:46:33,211 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 09:46:33,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:33" (1/1) ... [2018-02-02 09:46:33,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:33" (1/1) ... [2018-02-02 09:46:33,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:33" (1/1) ... [2018-02-02 09:46:33,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:33" (1/1) ... [2018-02-02 09:46:33,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:33" (1/1) ... [2018-02-02 09:46:33,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:33" (1/1) ... [2018-02-02 09:46:33,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:33" (1/1) ... [2018-02-02 09:46:33,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 09:46:33,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 09:46:33,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 09:46:33,234 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 09:46:33,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:33" (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 09:46:33,270 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 09:46:33,270 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 09:46:33,271 INFO L136 BoogieDeclarations]: Found implementation of procedure SelectionSort [2018-02-02 09:46:33,271 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 09:46:33,271 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 09:46:33,271 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 09:46:33,271 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 09:46:33,271 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 09:46:33,271 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 09:46:33,271 INFO L128 BoogieDeclarations]: Found specification of procedure SelectionSort [2018-02-02 09:46:33,271 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 09:46:33,271 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 09:46:33,271 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 09:46:33,429 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 09:46:33,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:46:33 BoogieIcfgContainer [2018-02-02 09:46:33,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 09:46:33,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 09:46:33,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 09:46:33,433 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 09:46:33,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:46:33" (1/3) ... [2018-02-02 09:46:33,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25471d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:46:33, skipping insertion in model container [2018-02-02 09:46:33,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:33" (2/3) ... [2018-02-02 09:46:33,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25471d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:46:33, skipping insertion in model container [2018-02-02 09:46:33,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:46:33" (3/3) ... [2018-02-02 09:46:33,435 INFO L107 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-02-02 09:46:33,441 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-02 09:46:33,446 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-02-02 09:46:33,476 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 09:46:33,476 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 09:46:33,476 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-02-02 09:46:33,477 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-02 09:46:33,477 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 09:46:33,477 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 09:46:33,477 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 09:46:33,477 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 09:46:33,478 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 09:46:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-02-02 09:46:33,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-02 09:46:33,492 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:46:33,493 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:46:33,493 INFO L371 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 09:46:33,496 INFO L82 PathProgramCache]: Analyzing trace with hash 474885727, now seen corresponding path program 1 times [2018-02-02 09:46:33,530 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:46:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:46:33,565 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:46:33,591 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 09:46:33,593 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:46:33,593 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 09:46:33,594 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:46:33,595 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 09:46:33,595 INFO L182 omatonBuilderFactory]: Interpolants [46#true, 47#false] [2018-02-02 09:46:33,595 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 09:46:33,596 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-02 09:46:33,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-02 09:46:33,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 09:46:33,610 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-02-02 09:46:33,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:46:33,621 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-02-02 09:46:33,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-02 09:46:33,622 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-02-02 09:46:33,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:46:33,628 INFO L225 Difference]: With dead ends: 42 [2018-02-02 09:46:33,628 INFO L226 Difference]: Without dead ends: 35 [2018-02-02 09:46:33,629 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 09:46:33,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-02 09:46:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-02-02 09:46:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-02-02 09:46:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-02-02 09:46:33,650 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 12 [2018-02-02 09:46:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:46:33,650 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-02-02 09:46:33,651 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-02 09:46:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-02-02 09:46:33,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 09:46:33,651 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:46:33,651 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:46:33,651 INFO L371 AbstractCegarLoop]: === Iteration 2 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 09:46:33,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1836535847, now seen corresponding path program 1 times [2018-02-02 09:46:33,652 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:46:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:46:33,664 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:46:33,746 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 09:46:33,746 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:46:33,746 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 09:46:33,746 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:46:33,747 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 09:46:33,747 INFO L182 omatonBuilderFactory]: Interpolants [125#true, 126#false, 127#(<= (+ SelectionSort_~j~0 1) SelectionSort_~array_size)] [2018-02-02 09:46:33,747 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 09:46:33,748 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 09:46:33,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 09:46:33,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:46:33,748 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2018-02-02 09:46:33,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:46:33,776 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-02-02 09:46:33,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 09:46:33,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-02-02 09:46:33,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:46:33,777 INFO L225 Difference]: With dead ends: 37 [2018-02-02 09:46:33,777 INFO L226 Difference]: Without dead ends: 37 [2018-02-02 09:46:33,778 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 09:46:33,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-02-02 09:46:33,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-02-02 09:46:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-02 09:46:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-02-02 09:46:33,782 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 13 [2018-02-02 09:46:33,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:46:33,782 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-02-02 09:46:33,782 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 09:46:33,782 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-02-02 09:46:33,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 09:46:33,783 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:46:33,783 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:46:33,783 INFO L371 AbstractCegarLoop]: === Iteration 3 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 09:46:33,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1836535893, now seen corresponding path program 1 times [2018-02-02 09:46:33,784 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:46:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 09:46:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 09:46:33,817 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 09:46:33,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:46:33 BoogieIcfgContainer [2018-02-02 09:46:33,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 09:46:33,831 INFO L168 Benchmark]: Toolchain (without parser) took 780.37 ms. Allocated memory was 400.6 MB in the beginning and 606.6 MB in the end (delta: 206.0 MB). Free memory was 357.2 MB in the beginning and 569.2 MB in the end (delta: -211.9 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 09:46:33,832 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 400.6 MB. Free memory is still 362.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 09:46:33,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.75 ms. Allocated memory is still 400.6 MB. Free memory was 357.2 MB in the beginning and 349.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. [2018-02-02 09:46:33,833 INFO L168 Benchmark]: Boogie Preprocessor took 22.18 ms. Allocated memory is still 400.6 MB. Free memory is still 349.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 09:46:33,833 INFO L168 Benchmark]: RCFGBuilder took 196.74 ms. Allocated memory is still 400.6 MB. Free memory was 349.3 MB in the beginning and 329.5 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 5.3 GB. [2018-02-02 09:46:33,833 INFO L168 Benchmark]: TraceAbstraction took 399.59 ms. Allocated memory was 400.6 MB in the beginning and 606.6 MB in the end (delta: 206.0 MB). Free memory was 329.5 MB in the beginning and 569.2 MB in the end (delta: -239.7 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 09:46:33,835 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 400.6 MB. Free memory is still 362.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 156.75 ms. Allocated memory is still 400.6 MB. Free memory was 357.2 MB in the beginning and 349.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.18 ms. Allocated memory is still 400.6 MB. Free memory is still 349.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 196.74 ms. Allocated memory is still 400.6 MB. Free memory was 349.3 MB in the beginning and 329.5 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 399.59 ms. Allocated memory was 400.6 MB in the beginning and 606.6 MB in the end (delta: 206.0 MB). Free memory was 329.5 MB in the beginning and 569.2 MB in the end (delta: -239.7 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, 0.3s 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_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_09-46-33-842.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_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_09-46-33-842.csv Received shutdown request...