java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/selectionsort-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:52:14,193 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:52:14,195 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:52:14,208 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:52:14,208 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:52:14,209 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:52:14,210 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:52:14,212 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:52:14,214 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:52:14,215 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:52:14,215 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:52:14,216 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:52:14,216 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:52:14,217 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:52:14,218 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:52:14,220 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:52:14,222 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:52:14,224 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:52:14,225 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:52:14,226 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:52:14,229 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 16:52:14,229 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 16:52:14,229 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 16:52:14,230 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 16:52:14,231 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 16:52:14,232 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 16:52:14,232 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 16:52:14,233 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 16:52:14,233 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 16:52:14,233 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:52:14,234 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:52:14,234 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf [2018-01-24 16:52:14,244 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:52:14,244 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:52:14,245 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:52:14,245 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:52:14,245 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:52:14,246 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:52:14,246 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:52:14,246 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:52:14,247 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:52:14,247 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:52:14,247 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:52:14,247 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:52:14,247 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:52:14,248 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:52:14,248 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:52:14,248 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:52:14,248 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:52:14,248 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:52:14,248 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:52:14,249 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:52:14,249 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:52:14,249 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:52:14,249 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:52:14,249 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:52:14,250 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:52:14,250 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:52:14,250 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:52:14,250 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:52:14,250 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:52:14,250 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 16:52:14,251 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:52:14,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:52:14,251 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:52:14,251 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 16:52:14,252 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:52:14,252 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:52:14,287 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:52:14,300 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:52:14,304 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:52:14,306 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:52:14,306 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:52:14,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:52:14,469 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:52:14,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:52:14,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:52:14,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:52:14,483 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:52:14,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:52:14" (1/1) ... [2018-01-24 16:52:14,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdf0e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:52:14, skipping insertion in model container [2018-01-24 16:52:14,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:52:14" (1/1) ... [2018-01-24 16:52:14,504 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:52:14,544 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:52:14,658 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:52:14,673 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:52:14,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:52:14 WrapperNode [2018-01-24 16:52:14,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:52:14,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:52:14,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:52:14,680 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:52:14,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:52:14" (1/1) ... [2018-01-24 16:52:14,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:52:14" (1/1) ... [2018-01-24 16:52:14,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:52:14" (1/1) ... [2018-01-24 16:52:14,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:52:14" (1/1) ... [2018-01-24 16:52:14,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:52:14" (1/1) ... [2018-01-24 16:52:14,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:52:14" (1/1) ... [2018-01-24 16:52:14,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:52:14" (1/1) ... [2018-01-24 16:52:14,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:52:14,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:52:14,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:52:14,714 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:52:14,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:52:14" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:52:14,762 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:52:14,763 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:52:14,763 INFO L136 BoogieDeclarations]: Found implementation of procedure SelectionSort [2018-01-24 16:52:14,763 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:52:14,763 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:52:14,763 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:52:14,763 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:52:14,763 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:52:14,763 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:52:14,764 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:52:14,764 INFO L128 BoogieDeclarations]: Found specification of procedure SelectionSort [2018-01-24 16:52:14,764 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:52:14,764 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:52:14,764 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:52:14,960 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:52:14,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:52:14 BoogieIcfgContainer [2018-01-24 16:52:14,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:52:14,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 16:52:14,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 16:52:14,964 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 16:52:14,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 04:52:14" (1/3) ... [2018-01-24 16:52:14,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50951f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:52:14, skipping insertion in model container [2018-01-24 16:52:14,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:52:14" (2/3) ... [2018-01-24 16:52:14,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50951f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:52:14, skipping insertion in model container [2018-01-24 16:52:14,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:52:14" (3/3) ... [2018-01-24 16:52:14,969 INFO L105 eAbstractionObserver]: Analyzing ICFG selectionsort-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:52:14,975 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 16:52:14,980 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-01-24 16:52:15,015 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 16:52:15,015 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 16:52:15,015 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 16:52:15,015 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 16:52:15,016 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 16:52:15,016 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 16:52:15,016 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 16:52:15,016 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 16:52:15,016 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 16:52:15,033 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-01-24 16:52:15,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 16:52:15,039 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:52:15,040 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:52:15,041 INFO L371 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:52:15,045 INFO L82 PathProgramCache]: Analyzing trace with hash -545325107, now seen corresponding path program 1 times [2018-01-24 16:52:15,047 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:52:15,087 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:15,088 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:15,088 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:15,088 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:52:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:15,143 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:52:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:15,182 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:52:15,182 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 16:52:15,182 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:52:15,184 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 16:52:15,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 16:52:15,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 16:52:15,196 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-01-24 16:52:15,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:52:15,216 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2018-01-24 16:52:15,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 16:52:15,218 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-24 16:52:15,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:52:15,228 INFO L225 Difference]: With dead ends: 85 [2018-01-24 16:52:15,228 INFO L226 Difference]: Without dead ends: 45 [2018-01-24 16:52:15,232 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 16:52:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-01-24 16:52:15,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-01-24 16:52:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-01-24 16:52:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-01-24 16:52:15,333 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 15 [2018-01-24 16:52:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:52:15,334 INFO L432 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-01-24 16:52:15,334 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 16:52:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-01-24 16:52:15,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 16:52:15,335 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:52:15,335 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:52:15,335 INFO L371 AbstractCegarLoop]: === Iteration 2 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:52:15,335 INFO L82 PathProgramCache]: Analyzing trace with hash 274771065, now seen corresponding path program 1 times [2018-01-24 16:52:15,335 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:52:15,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:15,336 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:15,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:15,336 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:52:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:15,354 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:52:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:15,446 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:52:15,446 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 16:52:15,446 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:52:15,448 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 16:52:15,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 16:52:15,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 16:52:15,449 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 6 states. [2018-01-24 16:52:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:52:15,610 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-01-24 16:52:15,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 16:52:15,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-01-24 16:52:15,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:52:15,612 INFO L225 Difference]: With dead ends: 45 [2018-01-24 16:52:15,612 INFO L226 Difference]: Without dead ends: 39 [2018-01-24 16:52:15,613 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-24 16:52:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-24 16:52:15,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-01-24 16:52:15,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-24 16:52:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-01-24 16:52:15,619 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 16 [2018-01-24 16:52:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:52:15,620 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-01-24 16:52:15,620 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 16:52:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-01-24 16:52:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 16:52:15,620 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:52:15,620 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:52:15,621 INFO L371 AbstractCegarLoop]: === Iteration 3 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:52:15,621 INFO L82 PathProgramCache]: Analyzing trace with hash 274771066, now seen corresponding path program 1 times [2018-01-24 16:52:15,621 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:52:15,622 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:15,622 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:15,622 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:15,622 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:52:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:15,639 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:52:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:15,680 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:52:15,680 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 16:52:15,680 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:52:15,680 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 16:52:15,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 16:52:15,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 16:52:15,681 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 3 states. [2018-01-24 16:52:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:52:15,698 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2018-01-24 16:52:15,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 16:52:15,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-01-24 16:52:15,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:52:15,699 INFO L225 Difference]: With dead ends: 69 [2018-01-24 16:52:15,699 INFO L226 Difference]: Without dead ends: 41 [2018-01-24 16:52:15,699 INFO L525 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 [2018-01-24 16:52:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-01-24 16:52:15,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-01-24 16:52:15,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-24 16:52:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-01-24 16:52:15,704 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 16 [2018-01-24 16:52:15,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:52:15,704 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-01-24 16:52:15,704 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 16:52:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-01-24 16:52:15,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 16:52:15,704 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:52:15,705 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:52:15,705 INFO L371 AbstractCegarLoop]: === Iteration 4 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:52:15,705 INFO L82 PathProgramCache]: Analyzing trace with hash 274771112, now seen corresponding path program 1 times [2018-01-24 16:52:15,705 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:52:15,706 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:15,706 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:15,706 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:15,706 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:52:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:15,718 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:52:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:15,858 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:52:15,858 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 16:52:15,858 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:52:15,858 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 16:52:15,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 16:52:15,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-24 16:52:15,859 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 8 states. [2018-01-24 16:52:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:52:16,275 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2018-01-24 16:52:16,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 16:52:16,275 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-01-24 16:52:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:52:16,278 INFO L225 Difference]: With dead ends: 70 [2018-01-24 16:52:16,278 INFO L226 Difference]: Without dead ends: 69 [2018-01-24 16:52:16,278 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-01-24 16:52:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-01-24 16:52:16,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2018-01-24 16:52:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-01-24 16:52:16,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2018-01-24 16:52:16,285 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 16 [2018-01-24 16:52:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:52:16,285 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2018-01-24 16:52:16,285 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 16:52:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2018-01-24 16:52:16,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 16:52:16,286 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:52:16,286 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:52:16,286 INFO L371 AbstractCegarLoop]: === Iteration 5 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:52:16,286 INFO L82 PathProgramCache]: Analyzing trace with hash -72030156, now seen corresponding path program 1 times [2018-01-24 16:52:16,286 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:52:16,287 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:16,287 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:16,287 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:16,287 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:52:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:16,298 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:52:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:16,367 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:52:16,367 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 16:52:16,368 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:52:16,368 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 16:52:16,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 16:52:16,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-24 16:52:16,369 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 8 states. [2018-01-24 16:52:16,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:52:16,529 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2018-01-24 16:52:16,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 16:52:16,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-01-24 16:52:16,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:52:16,531 INFO L225 Difference]: With dead ends: 88 [2018-01-24 16:52:16,531 INFO L226 Difference]: Without dead ends: 83 [2018-01-24 16:52:16,531 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-01-24 16:52:16,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-01-24 16:52:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 63. [2018-01-24 16:52:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-24 16:52:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-01-24 16:52:16,538 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 17 [2018-01-24 16:52:16,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:52:16,538 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-01-24 16:52:16,538 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 16:52:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-01-24 16:52:16,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 16:52:16,539 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:52:16,539 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:52:16,539 INFO L371 AbstractCegarLoop]: === Iteration 6 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:52:16,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1045798781, now seen corresponding path program 1 times [2018-01-24 16:52:16,540 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:52:16,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:16,540 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:16,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:16,541 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:52:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:16,554 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:52:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:16,597 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:52:16,633 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 16:52:16,634 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:52:16,634 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 16:52:16,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 16:52:16,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 16:52:16,634 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 4 states. [2018-01-24 16:52:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:52:16,703 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2018-01-24 16:52:16,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:52:16,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-01-24 16:52:16,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:52:16,704 INFO L225 Difference]: With dead ends: 63 [2018-01-24 16:52:16,704 INFO L226 Difference]: Without dead ends: 56 [2018-01-24 16:52:16,704 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:52:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-24 16:52:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-01-24 16:52:16,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-24 16:52:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-01-24 16:52:16,713 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 19 [2018-01-24 16:52:16,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:52:16,714 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-01-24 16:52:16,714 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 16:52:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-01-24 16:52:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 16:52:16,714 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:52:16,715 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:52:16,715 INFO L371 AbstractCegarLoop]: === Iteration 7 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:52:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1880509326, now seen corresponding path program 1 times [2018-01-24 16:52:16,715 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:52:16,716 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:16,716 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:16,716 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:16,716 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:52:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:16,731 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:52:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:16,828 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:52:16,828 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 16:52:16,829 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-01-24 16:52:16,831 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [11], [15], [18], [20], [21], [24], [29], [33], [39], [60], [65], [67], [68], [75], [76], [77], [79] [2018-01-24 16:52:16,877 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 16:52:16,877 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:52:17,072 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:52:17,073 INFO L268 AbstractInterpreter]: Visited 21 different actions 36 times. Merged at 8 different actions 15 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 23 variables. [2018-01-24 16:52:17,102 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 16:52:17,103 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:52:17,103 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 16:52:17,118 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:17,118 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:52:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:17,158 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:52:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:17,265 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:52:17,345 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2018-01-24 16:52:17,346 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 16:52:17,380 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-01-24 16:52:17,380 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 16:52:17,397 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 16:52:17,397 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:42, output treesize:17 [2018-01-24 16:52:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:17,700 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:52:17,701 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 16:52:17,705 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:17,705 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:52:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:17,728 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:52:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:17,779 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:52:17,788 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2018-01-24 16:52:17,789 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 16:52:17,810 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-01-24 16:52:17,811 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 16:52:17,815 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 16:52:17,815 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:42, output treesize:17 [2018-01-24 16:52:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:17,850 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 16:52:17,851 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 19 [2018-01-24 16:52:17,851 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 16:52:17,851 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-24 16:52:17,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-24 16:52:17,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-01-24 16:52:17,852 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 14 states. [2018-01-24 16:52:18,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:52:18,127 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2018-01-24 16:52:18,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 16:52:18,127 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2018-01-24 16:52:18,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:52:18,128 INFO L225 Difference]: With dead ends: 69 [2018-01-24 16:52:18,128 INFO L226 Difference]: Without dead ends: 67 [2018-01-24 16:52:18,129 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2018-01-24 16:52:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-01-24 16:52:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2018-01-24 16:52:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-24 16:52:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-01-24 16:52:18,134 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 22 [2018-01-24 16:52:18,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:52:18,134 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-01-24 16:52:18,135 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-24 16:52:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-01-24 16:52:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 16:52:18,135 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:52:18,135 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:52:18,135 INFO L371 AbstractCegarLoop]: === Iteration 8 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:52:18,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1833751648, now seen corresponding path program 1 times [2018-01-24 16:52:18,136 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:52:18,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:18,136 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:18,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:18,136 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:52:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:18,147 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:52:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:18,190 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:52:18,190 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 16:52:18,190 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-01-24 16:52:18,190 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [11], [15], [20], [21], [24], [26], [29], [33], [60], [65], [67], [68], [75], [76], [77], [79] [2018-01-24 16:52:18,192 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 16:52:18,192 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:52:18,275 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:52:18,275 INFO L268 AbstractInterpreter]: Visited 20 different actions 33 times. Merged at 7 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 23 variables. [2018-01-24 16:52:18,280 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 16:52:18,280 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:52:18,280 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 16:52:18,296 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:18,296 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:52:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:18,312 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:52:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:18,386 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:52:18,404 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-01-24 16:52:18,405 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 16:52:18,410 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2018-01-24 16:52:18,411 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 16:52:18,414 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 16:52:18,414 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:42, output treesize:17 [2018-01-24 16:52:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:18,515 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:52:18,516 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 16:52:18,518 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:18,519 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:52:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:18,546 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:52:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:18,708 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:52:18,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-01-24 16:52:18,716 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 16:52:18,724 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2018-01-24 16:52:18,724 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 16:52:18,727 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 16:52:18,728 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:42, output treesize:17 [2018-01-24 16:52:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:18,861 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 16:52:18,861 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9, 9, 9] total 27 [2018-01-24 16:52:18,861 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 16:52:18,861 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-24 16:52:18,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-24 16:52:18,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2018-01-24 16:52:18,862 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 14 states. [2018-01-24 16:52:19,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:52:19,218 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2018-01-24 16:52:19,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 16:52:19,219 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2018-01-24 16:52:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:52:19,219 INFO L225 Difference]: With dead ends: 93 [2018-01-24 16:52:19,219 INFO L226 Difference]: Without dead ends: 90 [2018-01-24 16:52:19,220 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2018-01-24 16:52:19,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-01-24 16:52:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 53. [2018-01-24 16:52:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-01-24 16:52:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2018-01-24 16:52:19,230 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 23 [2018-01-24 16:52:19,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:52:19,230 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2018-01-24 16:52:19,230 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-24 16:52:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2018-01-24 16:52:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 16:52:19,231 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:52:19,231 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:52:19,231 INFO L371 AbstractCegarLoop]: === Iteration 9 === [SelectionSortErr2RequiresViolation, SelectionSortErr4RequiresViolation, SelectionSortErr8RequiresViolation, SelectionSortErr9RequiresViolation, SelectionSortErr3RequiresViolation, SelectionSortErr1RequiresViolation, SelectionSortErr5RequiresViolation, SelectionSortErr11RequiresViolation, SelectionSortErr7RequiresViolation, SelectionSortErr10RequiresViolation, SelectionSortErr0RequiresViolation, SelectionSortErr6RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:52:19,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1011769969, now seen corresponding path program 1 times [2018-01-24 16:52:19,231 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:52:19,232 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:19,232 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:19,232 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:52:19,232 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:52:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:19,244 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:52:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:19,404 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:52:19,404 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 16:52:19,404 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-01-24 16:52:19,404 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [11], [15], [18], [20], [21], [24], [29], [33], [37], [40], [43], [60], [65], [67], [68], [75], [76], [77], [79] [2018-01-24 16:52:19,406 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 16:52:19,406 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:52:19,518 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:52:19,518 INFO L268 AbstractInterpreter]: Visited 23 different actions 42 times. Merged at 10 different actions 19 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-01-24 16:52:19,520 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 16:52:19,520 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:52:19,520 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 16:52:19,532 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:19,532 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:52:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:19,551 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:52:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:19,734 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:52:19,811 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2018-01-24 16:52:19,811 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 16:52:19,813 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 16:52:19,813 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:7 [2018-01-24 16:52:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:19,965 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:52:19,965 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 16:52:19,968 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:52:19,968 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:52:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:52:19,992 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:52:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:20,089 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:52:20,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2018-01-24 16:52:20,093 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 16:52:20,093 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 16:52:20,094 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:7 [2018-01-24 16:52:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:52:20,139 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 16:52:20,139 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8, 8, 8] total 29 [2018-01-24 16:52:20,139 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 16:52:20,139 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-24 16:52:20,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-24 16:52:20,140 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2018-01-24 16:52:20,140 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 17 states. [2018-01-24 16:52:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:52:20,458 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2018-01-24 16:52:20,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 16:52:20,458 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 24 [2018-01-24 16:52:20,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:52:20,459 INFO L225 Difference]: With dead ends: 74 [2018-01-24 16:52:20,459 INFO L226 Difference]: Without dead ends: 0 [2018-01-24 16:52:20,460 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2018-01-24 16:52:20,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-24 16:52:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-24 16:52:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-24 16:52:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-24 16:52:20,461 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-01-24 16:52:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:52:20,461 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-24 16:52:20,461 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-24 16:52:20,461 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-24 16:52:20,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-24 16:52:20,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-24 16:52:20,856 WARN L146 SmtUtils]: Spent 261ms on a formula simplification. DAG size of input: 82 DAG size of output 52 [2018-01-24 16:52:20,988 WARN L146 SmtUtils]: Spent 130ms on a formula simplification. DAG size of input: 68 DAG size of output 46 [2018-01-24 16:52:21,014 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,015 INFO L397 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 565) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-24 16:52:21,015 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,015 INFO L401 ceAbstractionStarter]: For program point SelectionSortEXIT(lines 540 556) no Hoare annotation was computed. [2018-01-24 16:52:21,015 INFO L401 ceAbstractionStarter]: For program point L553'(line 553) no Hoare annotation was computed. [2018-01-24 16:52:21,015 INFO L404 ceAbstractionStarter]: At program point SelectionSortENTRY(lines 540 556) the Hoare annotation is: true [2018-01-24 16:52:21,015 INFO L401 ceAbstractionStarter]: For program point L543(lines 543 555) no Hoare annotation was computed. [2018-01-24 16:52:21,015 INFO L401 ceAbstractionStarter]: For program point L549(line 549) no Hoare annotation was computed. [2018-01-24 16:52:21,015 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr6RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,016 INFO L401 ceAbstractionStarter]: For program point L547(lines 547 551) no Hoare annotation was computed. [2018-01-24 16:52:21,016 INFO L401 ceAbstractionStarter]: For program point L554'(line 554) no Hoare annotation was computed. [2018-01-24 16:52:21,016 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr10RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,016 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr7RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,016 INFO L401 ceAbstractionStarter]: For program point L543'''(lines 543 555) no Hoare annotation was computed. [2018-01-24 16:52:21,016 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr4RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,016 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr9RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,016 INFO L401 ceAbstractionStarter]: For program point L547''''(lines 547 551) no Hoare annotation was computed. [2018-01-24 16:52:21,016 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr1RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,016 INFO L397 ceAbstractionStarter]: At program point L543''(lines 543 555) the Hoare annotation is: (let ((.cse5 (select |#length| SelectionSort_~a.base))) (let ((.cse2 (= 1 (select |#valid| SelectionSort_~a.base))) (.cse0 (= SelectionSort_~a.offset 0)) (.cse1 (<= (* 4 SelectionSort_~array_size) .cse5))) (or (and .cse0 .cse1 (let ((.cse3 (<= 0 SelectionSort_~i~2)) (.cse6 (<= (+ SelectionSort_~min~3 1) SelectionSort_~j~3))) (or (let ((.cse4 (* 4 SelectionSort_~min~3))) (and .cse2 .cse3 (<= 0 (+ SelectionSort_~a.offset .cse4)) (<= (+ SelectionSort_~a.offset .cse4 8) .cse5) .cse6)) (and .cse2 (<= 1 SelectionSort_~min~3) .cse3 .cse6)))) (and .cse2 .cse0 (= SelectionSort_~i~2 0) .cse1) (< (select |#length| |SelectionSort_#in~a.base|) (* 4 |SelectionSort_#in~array_size|)) (not (= (select |#valid| |SelectionSort_#in~a.base|) 1)) (not (= 0 |SelectionSort_#in~a.offset|))))) [2018-01-24 16:52:21,016 INFO L401 ceAbstractionStarter]: For program point L549''(line 549) no Hoare annotation was computed. [2018-01-24 16:52:21,017 INFO L401 ceAbstractionStarter]: For program point L547''(lines 547 551) no Hoare annotation was computed. [2018-01-24 16:52:21,017 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr0RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,017 INFO L401 ceAbstractionStarter]: For program point L553''(line 553) no Hoare annotation was computed. [2018-01-24 16:52:21,017 INFO L397 ceAbstractionStarter]: At program point L547'''(lines 547 551) the Hoare annotation is: (let ((.cse4 (select |#length| SelectionSort_~a.base))) (let ((.cse1 (= SelectionSort_~a.offset 0)) (.cse0 (= 1 (select |#valid| SelectionSort_~a.base))) (.cse2 (<= 0 SelectionSort_~i~2)) (.cse5 (<= (+ SelectionSort_~min~3 1) SelectionSort_~j~3)) (.cse3 (* 4 SelectionSort_~min~3)) (.cse6 (+ SelectionSort_~i~2 1)) (.cse7 (<= (* 4 SelectionSort_~array_size) .cse4))) (or (and .cse0 .cse1 .cse2 (<= (+ .cse3 4) .cse4) .cse5 (<= .cse6 SelectionSort_~min~3) .cse7) (and .cse1 (and (exists ((SelectionSort_~j~3 Int)) (and (<= (+ SelectionSort_~i~2 1) SelectionSort_~j~3) (<= (+ SelectionSort_~a.offset (* 4 SelectionSort_~j~3) 4) (select |#length| SelectionSort_~a.base)))) .cse0 .cse2 (<= (+ SelectionSort_~a.offset .cse3 8) .cse4) .cse5 (<= 0 (+ SelectionSort_~a.offset .cse3)) (<= .cse6 SelectionSort_~j~3)) .cse7) (< (select |#length| |SelectionSort_#in~a.base|) (* 4 |SelectionSort_#in~array_size|)) (not (= (select |#valid| |SelectionSort_#in~a.base|) 1)) (not (= 0 |SelectionSort_#in~a.offset|))))) [2018-01-24 16:52:21,017 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr3RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,017 INFO L401 ceAbstractionStarter]: For program point L553(line 553) no Hoare annotation was computed. [2018-01-24 16:52:21,017 INFO L401 ceAbstractionStarter]: For program point L552(line 552) no Hoare annotation was computed. [2018-01-24 16:52:21,017 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr2RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,017 INFO L401 ceAbstractionStarter]: For program point L554(line 554) no Hoare annotation was computed. [2018-01-24 16:52:21,017 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr8RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,018 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr11RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,018 INFO L401 ceAbstractionStarter]: For program point SelectionSortErr5RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,018 INFO L401 ceAbstractionStarter]: For program point L549'(line 549) no Hoare annotation was computed. [2018-01-24 16:52:21,018 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 565) the Hoare annotation is: true [2018-01-24 16:52:21,018 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,018 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 565) the Hoare annotation is: true [2018-01-24 16:52:21,018 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 565) no Hoare annotation was computed. [2018-01-24 16:52:21,018 INFO L397 ceAbstractionStarter]: At program point L563(line 563) the Hoare annotation is: (let ((.cse0 (* 4 main_~array_size~5))) (and (= .cse0 (select |#length| main_~numbers~5.base)) (= 0 main_~numbers~5.offset) (= 0 |main_#t~malloc9.offset|) (= 1 (select |#valid| main_~numbers~5.base)) (= 1 (select |#valid| |main_#t~malloc9.base|)) (= (store |#valid| |main_#t~malloc9.base| 0) |old(#valid)|) (= .cse0 (select |#length| |main_#t~malloc9.base|)))) [2018-01-24 16:52:21,018 INFO L401 ceAbstractionStarter]: For program point L562'(line 562) no Hoare annotation was computed. [2018-01-24 16:52:21,018 INFO L401 ceAbstractionStarter]: For program point L562(line 562) no Hoare annotation was computed. [2018-01-24 16:52:21,018 INFO L401 ceAbstractionStarter]: For program point L563'(line 563) no Hoare annotation was computed. [2018-01-24 16:52:21,019 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 557 565) no Hoare annotation was computed. [2018-01-24 16:52:21,019 INFO L401 ceAbstractionStarter]: For program point L559(lines 559 561) no Hoare annotation was computed. [2018-01-24 16:52:21,019 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 557 565) no Hoare annotation was computed. [2018-01-24 16:52:21,019 INFO L397 ceAbstractionStarter]: At program point mainENTRY(lines 557 565) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-24 16:52:21,019 INFO L401 ceAbstractionStarter]: For program point L562''(line 562) no Hoare annotation was computed. [2018-01-24 16:52:21,019 INFO L401 ceAbstractionStarter]: For program point L559''(lines 559 561) no Hoare annotation was computed. [2018-01-24 16:52:21,019 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 557 565) no Hoare annotation was computed. [2018-01-24 16:52:21,023 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] [2018-01-24 16:52:21,024 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] [2018-01-24 16:52:21,027 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,027 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,028 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,028 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,028 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,029 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,033 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] [2018-01-24 16:52:21,033 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] [2018-01-24 16:52:21,034 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,034 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,034 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,035 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,035 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,035 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,038 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,038 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,039 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,039 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,041 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,041 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,041 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,042 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 04:52:21 BoogieIcfgContainer [2018-01-24 16:52:21,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 16:52:21,045 INFO L168 Benchmark]: Toolchain (without parser) took 6574.62 ms. Allocated memory was 307.2 MB in the beginning and 544.2 MB in the end (delta: 237.0 MB). Free memory was 266.2 MB in the beginning and 333.1 MB in the end (delta: -66.9 MB). Peak memory consumption was 170.1 MB. Max. memory is 5.3 GB. [2018-01-24 16:52:21,045 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 307.2 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:52:21,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.97 ms. Allocated memory is still 307.2 MB. Free memory was 266.2 MB in the beginning and 256.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-24 16:52:21,046 INFO L168 Benchmark]: Boogie Preprocessor took 33.87 ms. Allocated memory is still 307.2 MB. Free memory was 256.0 MB in the beginning and 254.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:52:21,046 INFO L168 Benchmark]: RCFGBuilder took 247.11 ms. Allocated memory is still 307.2 MB. Free memory was 254.0 MB in the beginning and 237.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 5.3 GB. [2018-01-24 16:52:21,046 INFO L168 Benchmark]: TraceAbstraction took 6081.48 ms. Allocated memory was 307.2 MB in the beginning and 544.2 MB in the end (delta: 237.0 MB). Free memory was 235.1 MB in the beginning and 333.1 MB in the end (delta: -98.0 MB). Peak memory consumption was 139.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:52:21,048 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 307.2 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 202.97 ms. Allocated memory is still 307.2 MB. Free memory was 266.2 MB in the beginning and 256.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 33.87 ms. Allocated memory is still 307.2 MB. Free memory was 256.0 MB in the beginning and 254.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 247.11 ms. Allocated memory is still 307.2 MB. Free memory was 254.0 MB in the beginning and 237.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 6081.48 ms. Allocated memory was 307.2 MB in the beginning and 544.2 MB in the end (delta: 237.0 MB). Free memory was 235.1 MB in the beginning and 333.1 MB in the end (delta: -98.0 MB). Peak memory consumption was 139.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 20 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 163 LocStat_NO_SUPPORTING_DISEQUALITIES : 15 LocStat_NO_DISJUNCTIONS : -40 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 27 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 44 TransStat_NO_SUPPORTING_DISEQUALITIES : 2 TransStat_NO_DISJUNCTIONS : 28 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.551747 RENAME_VARIABLES(MILLISECONDS) : 0.522340 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.484584 PROJECTAWAY(MILLISECONDS) : 0.502426 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001149 DISJOIN(MILLISECONDS) : 0.589545 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.563616 ADD_EQUALITY(MILLISECONDS) : 0.068791 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.042950 #CONJOIN_DISJUNCTIVE : 58 #RENAME_VARIABLES : 99 #UNFREEZE : 0 #CONJOIN : 89 #PROJECTAWAY : 79 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 5 #RENAME_VARIABLES_DISJUNCTIVE : 95 #ADD_EQUALITY : 44 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 19 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 152 LocStat_NO_SUPPORTING_DISEQUALITIES : 14 LocStat_NO_DISJUNCTIONS : -38 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 26 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 43 TransStat_NO_SUPPORTING_DISEQUALITIES : 2 TransStat_NO_DISJUNCTIONS : 27 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.440678 RENAME_VARIABLES(MILLISECONDS) : 0.308463 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.400498 PROJECTAWAY(MILLISECONDS) : 0.384528 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001236 DISJOIN(MILLISECONDS) : 0.323661 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.333405 ADD_EQUALITY(MILLISECONDS) : 0.030381 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.018438 #CONJOIN_DISJUNCTIVE : 54 #RENAME_VARIABLES : 91 #UNFREEZE : 0 #CONJOIN : 85 #PROJECTAWAY : 74 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 5 #RENAME_VARIABLES_DISJUNCTIVE : 87 #ADD_EQUALITY : 43 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 22 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 188 LocStat_NO_SUPPORTING_DISEQUALITIES : 17 LocStat_NO_DISJUNCTIONS : -44 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 29 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 47 TransStat_NO_SUPPORTING_DISEQUALITIES : 2 TransStat_NO_DISJUNCTIONS : 30 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.476966 RENAME_VARIABLES(MILLISECONDS) : 0.397051 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.423402 PROJECTAWAY(MILLISECONDS) : 0.376028 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001183 DISJOIN(MILLISECONDS) : 0.473202 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.434387 ADD_EQUALITY(MILLISECONDS) : 0.029650 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.019158 #CONJOIN_DISJUNCTIVE : 67 #RENAME_VARIABLES : 115 #UNFREEZE : 0 #CONJOIN : 100 #PROJECTAWAY : 89 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 5 #RENAME_VARIABLES_DISJUNCTIVE : 111 #ADD_EQUALITY : 47 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 557]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold - InvariantResult [Line: 547]: Loop Invariant [2018-01-24 16:52:21,059 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] [2018-01-24 16:52:21,059 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] [2018-01-24 16:52:21,060 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,060 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,060 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,061 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,061 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,061 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,063 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] [2018-01-24 16:52:21,063 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[SelectionSort_~j~3,QUANTIFIED] [2018-01-24 16:52:21,064 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,064 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,064 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,065 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,065 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,065 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: (((((((((1 == \valid[a] && a == 0) && 0 <= i) && 4 * min + 4 <= unknown-#length-unknown[a]) && min + 1 <= j) && i + 1 <= min) && 4 * array_size <= unknown-#length-unknown[a]) || ((a == 0 && ((((((\exists SelectionSort_~j~3 : int :: i + 1 <= SelectionSort_~j~3 && a + 4 * SelectionSort_~j~3 + 4 <= unknown-#length-unknown[a]) && 1 == \valid[a]) && 0 <= i) && a + 4 * min + 8 <= unknown-#length-unknown[a]) && min + 1 <= j) && 0 <= a + 4 * min) && i + 1 <= j) && 4 * array_size <= unknown-#length-unknown[a])) || unknown-#length-unknown[a] < 4 * \old(array_size)) || !(\valid[a] == 1)) || !(0 == a) - InvariantResult [Line: 543]: Loop Invariant [2018-01-24 16:52:21,067 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,067 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,067 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,068 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,069 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,069 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,070 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:52:21,070 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: (((((a == 0 && 4 * array_size <= unknown-#length-unknown[a]) && (((((1 == \valid[a] && 0 <= i) && 0 <= a + 4 * min) && a + 4 * min + 8 <= unknown-#length-unknown[a]) && min + 1 <= j) || (((1 == \valid[a] && 1 <= min) && 0 <= i) && min + 1 <= j))) || (((1 == \valid[a] && a == 0) && i == 0) && 4 * array_size <= unknown-#length-unknown[a])) || unknown-#length-unknown[a] < 4 * \old(array_size)) || !(\valid[a] == 1)) || !(0 == a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 13 error locations. SAFE Result, 6.0s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 260 SDtfs, 789 SDslu, 716 SDs, 0 SdLazy, 928 SolverSat, 113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 220 SyntacticMatches, 12 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 88 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 19 NumberOfFragments, 265 HoareAnnotationTreeSize, 8 FomulaSimplifications, 746 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1435 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 423 ConstructedInterpolants, 34 QuantifiedInterpolants, 66760 SizeOfPredicates, 34 NumberOfNonLiveVariables, 556 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 15/40 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_16-52-21-075.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-52-21-075.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-52-21-075.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-24_16-52-21-075.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-24_16-52-21-075.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-2-2018-01-24_16-52-21-075.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-2-2018-01-24_16-52-21-075.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/selectionsort-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_16-52-21-075.csv Received shutdown request...