java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/PointerIncrement.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 16:59:13,350 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 16:59:13,352 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 16:59:13,375 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 16:59:13,375 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 16:59:13,377 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 16:59:13,378 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 16:59:13,380 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 16:59:13,383 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 16:59:13,384 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 16:59:13,385 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 16:59:13,386 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 16:59:13,387 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 16:59:13,388 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 16:59:13,389 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 16:59:13,390 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 16:59:13,390 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 16:59:13,392 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 16:59:13,394 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 16:59:13,396 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 16:59:13,397 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 16:59:13,398 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 16:59:13,403 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 16:59:13,404 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 16:59:13,404 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 16:59:13,405 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 16:59:13,406 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 16:59:13,407 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 16:59:13,407 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 16:59:13,412 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 16:59:13,413 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 16:59:13,414 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 16:59:13,414 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 16:59:13,414 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 16:59:13,417 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 16:59:13,418 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 16:59:13,418 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf [2018-12-03 16:59:13,443 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 16:59:13,443 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 16:59:13,444 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 16:59:13,444 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 16:59:13,444 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 16:59:13,445 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 16:59:13,446 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 16:59:13,446 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 16:59:13,446 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 16:59:13,446 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 16:59:13,446 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 16:59:13,447 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 16:59:13,447 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 16:59:13,447 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 16:59:13,447 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 16:59:13,449 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 16:59:13,449 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 16:59:13,450 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 16:59:13,450 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 16:59:13,450 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 16:59:13,450 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 16:59:13,450 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 16:59:13,452 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 16:59:13,452 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 16:59:13,452 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 16:59:13,452 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 16:59:13,453 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 16:59:13,453 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 16:59:13,453 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 16:59:13,453 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 16:59:13,453 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 16:59:13,454 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 16:59:13,454 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 16:59:13,454 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 16:59:13,454 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 16:59:13,454 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 16:59:13,455 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 16:59:13,455 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 16:59:13,455 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 16:59:13,455 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 16:59:13,455 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 16:59:13,496 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 16:59:13,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 16:59:13,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 16:59:13,518 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 16:59:13,519 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 16:59:13,520 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/PointerIncrement.bpl [2018-12-03 16:59:13,520 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/PointerIncrement.bpl' [2018-12-03 16:59:13,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 16:59:13,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 16:59:13,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 16:59:13,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 16:59:13,579 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 16:59:13,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:59:13" (1/1) ... [2018-12-03 16:59:13,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:59:13" (1/1) ... [2018-12-03 16:59:13,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 16:59:13,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 16:59:13,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 16:59:13,621 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 16:59:13,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:59:13" (1/1) ... [2018-12-03 16:59:13,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:59:13" (1/1) ... [2018-12-03 16:59:13,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:59:13" (1/1) ... [2018-12-03 16:59:13,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:59:13" (1/1) ... [2018-12-03 16:59:13,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:59:13" (1/1) ... [2018-12-03 16:59:13,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:59:13" (1/1) ... [2018-12-03 16:59:13,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:59:13" (1/1) ... [2018-12-03 16:59:13,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 16:59:13,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 16:59:13,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 16:59:13,650 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 16:59:13,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:59:13" (1/1) ... No working directory specified, using /storage/repos/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 [2018-12-03 16:59:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 16:59:13,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 16:59:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 16:59:13,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 16:59:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 16:59:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 16:59:13,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 16:59:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure ~malloc [2018-12-03 16:59:13,969 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 16:59:13,969 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 16:59:13,970 INFO L202 PluginConnector]: Adding new model PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:59:13 BoogieIcfgContainer [2018-12-03 16:59:13,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 16:59:13,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 16:59:13,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 16:59:13,974 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 16:59:13,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:59:13" (1/2) ... [2018-12-03 16:59:13,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea7bb2 and model type PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:59:13, skipping insertion in model container [2018-12-03 16:59:13,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:59:13" (2/2) ... [2018-12-03 16:59:13,977 INFO L112 eAbstractionObserver]: Analyzing ICFG PointerIncrement.bpl [2018-12-03 16:59:13,987 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 16:59:13,995 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-12-03 16:59:14,009 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-12-03 16:59:14,043 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 16:59:14,044 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 16:59:14,044 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 16:59:14,044 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 16:59:14,044 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 16:59:14,044 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 16:59:14,044 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 16:59:14,045 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 16:59:14,062 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-03 16:59:14,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-03 16:59:14,069 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:59:14,070 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 16:59:14,072 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 16:59:14,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:59:14,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1075821819, now seen corresponding path program 1 times [2018-12-03 16:59:14,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:59:14,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:59:14,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:59:14,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:59:14,133 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:59:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:59:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:59:14,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 16:59:14,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 16:59:14,301 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:59:14,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 16:59:14,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 16:59:14,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 16:59:14,345 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-12-03 16:59:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:59:14,457 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-12-03 16:59:14,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 16:59:14,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-03 16:59:14,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:59:14,469 INFO L225 Difference]: With dead ends: 23 [2018-12-03 16:59:14,470 INFO L226 Difference]: Without dead ends: 12 [2018-12-03 16:59:14,473 INFO L631 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 [2018-12-03 16:59:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-03 16:59:14,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-03 16:59:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-03 16:59:14,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-12-03 16:59:14,511 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2018-12-03 16:59:14,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:59:14,511 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-12-03 16:59:14,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 16:59:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-12-03 16:59:14,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-03 16:59:14,512 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:59:14,513 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 16:59:14,513 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 16:59:14,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:59:14,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1075821818, now seen corresponding path program 1 times [2018-12-03 16:59:14,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:59:14,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:59:14,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:59:14,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:59:14,516 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:59:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:59:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:59:14,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 16:59:14,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 16:59:14,592 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:59:14,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 16:59:14,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 16:59:14,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 16:59:14,596 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 3 states. [2018-12-03 16:59:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:59:14,664 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2018-12-03 16:59:14,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 16:59:14,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-03 16:59:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:59:14,666 INFO L225 Difference]: With dead ends: 18 [2018-12-03 16:59:14,666 INFO L226 Difference]: Without dead ends: 17 [2018-12-03 16:59:14,667 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 16:59:14,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-03 16:59:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2018-12-03 16:59:14,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-03 16:59:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-12-03 16:59:14,672 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2018-12-03 16:59:14,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:59:14,672 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-12-03 16:59:14,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 16:59:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-12-03 16:59:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-03 16:59:14,673 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:59:14,673 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 16:59:14,674 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 16:59:14,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:59:14,674 INFO L82 PathProgramCache]: Analyzing trace with hash -755999005, now seen corresponding path program 1 times [2018-12-03 16:59:14,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:59:14,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:59:14,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:59:14,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:59:14,677 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:59:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:59:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:59:14,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 16:59:14,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 16:59:14,742 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:59:14,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 16:59:14,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 16:59:14,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 16:59:14,744 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2018-12-03 16:59:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:59:14,799 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-12-03 16:59:14,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 16:59:14,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-03 16:59:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:59:14,800 INFO L225 Difference]: With dead ends: 22 [2018-12-03 16:59:14,801 INFO L226 Difference]: Without dead ends: 15 [2018-12-03 16:59:14,801 INFO L631 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 [2018-12-03 16:59:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-03 16:59:14,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-03 16:59:14,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-03 16:59:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-03 16:59:14,806 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-12-03 16:59:14,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:59:14,807 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-03 16:59:14,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 16:59:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-03 16:59:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 16:59:14,808 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:59:14,808 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 16:59:14,808 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 16:59:14,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:59:14,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2003729472, now seen corresponding path program 1 times [2018-12-03 16:59:14,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:59:14,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:59:14,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:59:14,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:59:14,811 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:59:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:59:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:59:14,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:59:14,998 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:59:14,999 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-12-03 16:59:15,001 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [13], [15], [16], [24], [30], [31], [32] [2018-12-03 16:59:15,042 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 16:59:15,042 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 16:59:15,080 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: Array domain does not support Call yet at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: Array domain does not support Call yet at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.handleCallTransition(ArrayDomainPostOperator.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.apply(ArrayDomainPostOperator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.apply(ArrayDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$18(DisjunctiveAbstractState.java:345) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.crossProductCollection(DisjunctiveAbstractState.java:513) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:345) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:243) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-12-03 16:59:15,084 INFO L168 Benchmark]: Toolchain (without parser) took 1507.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-12-03 16:59:15,086 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 16:59:15,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 16:59:15,088 INFO L168 Benchmark]: Boogie Preprocessor took 28.66 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 16:59:15,088 INFO L168 Benchmark]: RCFGBuilder took 320.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 16:59:15,090 INFO L168 Benchmark]: TraceAbstraction took 1112.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-12-03 16:59:15,096 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.66 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 320.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1112.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: Array domain does not support Call yet de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: Array domain does not support Call yet: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...