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_oct_cong.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-sophisticated.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 18:15:54,714 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 18:15:54,718 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 18:15:54,732 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 18:15:54,733 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 18:15:54,733 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 18:15:54,735 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 18:15:54,737 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 18:15:54,738 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 18:15:54,739 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 18:15:54,740 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 18:15:54,740 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 18:15:54,741 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 18:15:54,742 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 18:15:54,743 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 18:15:54,744 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 18:15:54,745 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 18:15:54,746 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 18:15:54,748 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 18:15:54,750 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 18:15:54,751 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 18:15:54,752 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 18:15:54,754 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-12-03 18:15:54,763 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf [2018-12-03 18:15:54,775 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 18:15:54,776 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 18:15:54,776 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 18:15:54,776 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 18:15:54,777 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 18:15:54,777 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 18:15:54,777 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 18:15:54,777 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 18:15:54,777 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 18:15:54,778 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 18:15:54,778 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 18:15:54,778 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 18:15:54,778 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 18:15:54,779 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 18:15:54,779 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 18:15:54,779 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 18:15:54,779 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 18:15:54,779 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 18:15:54,780 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 18:15:54,780 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 18:15:54,780 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 18:15:54,780 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 18:15:54,780 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 18:15:54,784 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 18:15:54,784 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 18:15:54,784 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 18:15:54,784 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 18:15:54,784 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 18:15:54,785 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 18:15:54,785 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 18:15:54,785 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 18:15:54,785 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 18:15:54,785 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 18:15:54,786 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 18:15:54,786 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 18:15:54,786 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 18:15:54,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 18:15:54,786 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 18:15:54,786 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 18:15:54,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 18:15:54,837 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 18:15:54,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 18:15:54,842 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 18:15:54,843 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 18:15:54,843 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-sophisticated.bpl [2018-12-03 18:15:54,844 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-sophisticated.bpl' [2018-12-03 18:15:54,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 18:15:54,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 18:15:54,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 18:15:54,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 18:15:54,882 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 18:15:54,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:15:54" (1/1) ... [2018-12-03 18:15:54,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:15:54" (1/1) ... [2018-12-03 18:15:54,914 WARN L165 Inliner]: Program contained no entry procedure! [2018-12-03 18:15:54,914 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-12-03 18:15:54,915 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-12-03 18:15:54,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 18:15:54,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 18:15:54,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 18:15:54,918 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 18:15:54,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:15:54" (1/1) ... [2018-12-03 18:15:54,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:15:54" (1/1) ... [2018-12-03 18:15:54,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:15:54" (1/1) ... [2018-12-03 18:15:54,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:15:54" (1/1) ... [2018-12-03 18:15:54,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:15:54" (1/1) ... [2018-12-03 18:15:54,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:15:54" (1/1) ... [2018-12-03 18:15:54,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:15:54" (1/1) ... [2018-12-03 18:15:54,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 18:15:54,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 18:15:54,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 18:15:54,940 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 18:15:54,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:15:54" (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 18:15:55,010 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-12-03 18:15:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 18:15:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 18:15:55,273 INFO L272 CfgBuilder]: Using library mode [2018-12-03 18:15:55,273 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 18:15:55,273 INFO L202 PluginConnector]: Adding new model Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:15:55 BoogieIcfgContainer [2018-12-03 18:15:55,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 18:15:55,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 18:15:55,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 18:15:55,278 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 18:15:55,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:15:54" (1/2) ... [2018-12-03 18:15:55,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c3d82b and model type Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:15:55, skipping insertion in model container [2018-12-03 18:15:55,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:15:55" (2/2) ... [2018-12-03 18:15:55,282 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-sophisticated.bpl [2018-12-03 18:15:55,292 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 18:15:55,303 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 18:15:55,321 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 18:15:55,363 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 18:15:55,364 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 18:15:55,364 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 18:15:55,364 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 18:15:55,364 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 18:15:55,365 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 18:15:55,365 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 18:15:55,365 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 18:15:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 18:15:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 18:15:55,389 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:15:55,390 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 18:15:55,393 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 18:15:55,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:15:55,399 INFO L82 PathProgramCache]: Analyzing trace with hash 30208, now seen corresponding path program 1 times [2018-12-03 18:15:55,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:15:55,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:15:55,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:15:55,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:15:55,453 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:15:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:15:55,530 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 18:15:55,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:15:55,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 18:15:55,532 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:15:55,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 18:15:55,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 18:15:55,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:15:55,552 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-03 18:15:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:15:55,615 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2018-12-03 18:15:55,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:15:55,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 18:15:55,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:15:55,631 INFO L225 Difference]: With dead ends: 13 [2018-12-03 18:15:55,631 INFO L226 Difference]: Without dead ends: 5 [2018-12-03 18:15:55,635 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 18:15:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-12-03 18:15:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-03 18:15:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-03 18:15:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2018-12-03 18:15:55,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 7 transitions. Word has length 3 [2018-12-03 18:15:55,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:15:55,670 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 7 transitions. [2018-12-03 18:15:55,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 18:15:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 7 transitions. [2018-12-03 18:15:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 18:15:55,671 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:15:55,671 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 18:15:55,672 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 18:15:55,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:15:55,672 INFO L82 PathProgramCache]: Analyzing trace with hash 929704, now seen corresponding path program 1 times [2018-12-03 18:15:55,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:15:55,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:15:55,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:15:55,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:15:55,674 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:15:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:15:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:15:55,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 18:15:55,733 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 18:15:55,734 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 18:15:55,736 INFO L205 CegarAbsIntRunner]: [0], [6], [13], [14] [2018-12-03 18:15:55,847 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 18:15:55,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 18:15:56,116 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-03 18:15:56,118 INFO L272 AbstractInterpreter]: Visited 4 different actions 30 times. Merged at 1 different actions 13 times. Widened at 1 different actions 9 times. Found 5 fixpoints after 2 different actions. Largest state had 0 variables. [2018-12-03 18:15:56,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:15:56,126 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-03 18:15:56,164 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-12-03 18:15:56,164 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-03 18:15:56,243 INFO L418 sIntCurrentIteration]: We unified 3 AI predicates to 3 [2018-12-03 18:15:56,244 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-03 18:15:56,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-03 18:15:56,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2018-12-03 18:15:56,245 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:15:56,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 18:15:56,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 18:15:56,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 18:15:56,248 INFO L87 Difference]: Start difference. First operand 5 states and 7 transitions. Second operand 4 states. [2018-12-03 18:15:56,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:15:56,383 INFO L93 Difference]: Finished difference Result 5 states and 7 transitions. [2018-12-03 18:15:56,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 18:15:56,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-12-03 18:15:56,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:15:56,384 INFO L225 Difference]: With dead ends: 5 [2018-12-03 18:15:56,384 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 18:15:56,385 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 18:15:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 18:15:56,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 18:15:56,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 18:15:56,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 18:15:56,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2018-12-03 18:15:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:15:56,388 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 18:15:56,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 18:15:56,388 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 18:15:56,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 18:15:56,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 18:15:56,548 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-12-03 18:15:56,552 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 11 31) no Hoare annotation was computed. [2018-12-03 18:15:56,552 INFO L448 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-12-03 18:15:56,552 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 29) no Hoare annotation was computed. [2018-12-03 18:15:56,552 INFO L448 ceAbstractionStarter]: For program point L28-1(lines 11 31) no Hoare annotation was computed. [2018-12-03 18:15:56,552 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 31) no Hoare annotation was computed. [2018-12-03 18:15:56,553 INFO L444 ceAbstractionStarter]: At program point L19-1(lines 18 30) the Hoare annotation is: (let ((.cse0 (+ main_x main_y))) (and (<= .cse0 1000) (<= (* 2 main_y) 2000) (<= 1000 .cse0))) [2018-12-03 18:15:56,558 INFO L202 PluginConnector]: Adding new model Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 06:15:56 BoogieIcfgContainer [2018-12-03 18:15:56,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 18:15:56,559 INFO L168 Benchmark]: Toolchain (without parser) took 1678.98 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 18:15:56,561 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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 18:15:56,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.39 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 18:15:56,562 INFO L168 Benchmark]: Boogie Preprocessor took 21.61 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 18:15:56,562 INFO L168 Benchmark]: RCFGBuilder took 334.27 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 18:15:56,563 INFO L168 Benchmark]: TraceAbstraction took 1284.03 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 18:15:56,567 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 0.22 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 35.39 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 21.61 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 334.27 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 1284.03 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: - PositiveResult [Line: 29]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (x + y <= 1000 && 2 * y <= 2000) && 1000 <= x + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 3 SDslu, 3 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.0 AbsIntAvgWeakeningVarsNumRemoved, 2.3333333333333335 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 16 HoareAnnotationTreeSize, 1 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 29 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...