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_oct.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/SkatingStrawberry.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b7bd044-m [2019-01-18 18:06:02,850 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-18 18:06:02,854 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-18 18:06:02,874 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-18 18:06:02,875 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-18 18:06:02,876 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-18 18:06:02,877 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-18 18:06:02,880 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-18 18:06:02,883 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-18 18:06:02,884 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-18 18:06:02,885 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-18 18:06:02,885 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-18 18:06:02,895 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-18 18:06:02,896 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-18 18:06:02,898 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-18 18:06:02,898 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-18 18:06:02,902 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-18 18:06:02,903 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-18 18:06:02,906 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-18 18:06:02,908 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-18 18:06:02,910 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-18 18:06:02,911 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-18 18:06:02,913 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-01-18 18:06:02,921 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-01-18 18:06:02,933 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-18 18:06:02,933 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-18 18:06:02,934 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-18 18:06:02,934 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-18 18:06:02,934 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-18 18:06:02,935 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-18 18:06:02,935 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-18 18:06:02,935 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-18 18:06:02,935 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-18 18:06:02,935 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-18 18:06:02,936 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-18 18:06:02,936 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-18 18:06:02,936 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-18 18:06:02,937 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-18 18:06:02,937 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-18 18:06:02,937 INFO L133 SettingsManager]: * Use SBE=true [2019-01-18 18:06:02,937 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-18 18:06:02,938 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-18 18:06:02,938 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-18 18:06:02,938 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-18 18:06:02,938 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-18 18:06:02,938 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-18 18:06:02,938 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-18 18:06:02,939 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-18 18:06:02,939 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-18 18:06:02,939 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-18 18:06:02,939 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-18 18:06:02,939 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-18 18:06:02,940 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-18 18:06:02,942 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-18 18:06:02,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-18 18:06:02,942 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-18 18:06:02,942 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-18 18:06:02,943 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-18 18:06:02,943 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-18 18:06:02,943 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-18 18:06:02,943 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-18 18:06:02,943 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-18 18:06:02,944 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-18 18:06:02,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-18 18:06:03,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-18 18:06:03,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-18 18:06:03,010 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-18 18:06:03,010 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-18 18:06:03,011 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/SkatingStrawberry.bpl [2019-01-18 18:06:03,012 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/SkatingStrawberry.bpl' [2019-01-18 18:06:03,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-18 18:06:03,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-18 18:06:03,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-18 18:06:03,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-18 18:06:03,052 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-18 18:06:03,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:06:03" (1/1) ... [2019-01-18 18:06:03,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:06:03" (1/1) ... [2019-01-18 18:06:03,086 WARN L165 Inliner]: Program contained no entry procedure! [2019-01-18 18:06:03,086 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-01-18 18:06:03,086 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-01-18 18:06:03,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-18 18:06:03,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-18 18:06:03,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-18 18:06:03,090 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-18 18:06:03,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:06:03" (1/1) ... [2019-01-18 18:06:03,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:06:03" (1/1) ... [2019-01-18 18:06:03,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:06:03" (1/1) ... [2019-01-18 18:06:03,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:06:03" (1/1) ... [2019-01-18 18:06:03,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:06:03" (1/1) ... [2019-01-18 18:06:03,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:06:03" (1/1) ... [2019-01-18 18:06:03,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:06:03" (1/1) ... [2019-01-18 18:06:03,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-18 18:06:03,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-18 18:06:03,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-18 18:06:03,113 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-18 18:06:03,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:06:03" (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 [2019-01-18 18:06:03,177 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-01-18 18:06:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-18 18:06:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-18 18:06:03,408 INFO L278 CfgBuilder]: Using library mode [2019-01-18 18:06:03,408 INFO L286 CfgBuilder]: Removed 1 assue(true) statements. [2019-01-18 18:06:03,409 INFO L202 PluginConnector]: Adding new model SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 06:06:03 BoogieIcfgContainer [2019-01-18 18:06:03,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-18 18:06:03,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-18 18:06:03,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-18 18:06:03,416 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-18 18:06:03,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:06:03" (1/2) ... [2019-01-18 18:06:03,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545fd5e7 and model type SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 06:06:03, skipping insertion in model container [2019-01-18 18:06:03,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 06:06:03" (2/2) ... [2019-01-18 18:06:03,419 INFO L112 eAbstractionObserver]: Analyzing ICFG SkatingStrawberry.bpl [2019-01-18 18:06:03,429 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-18 18:06:03,438 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-18 18:06:03,456 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-18 18:06:03,494 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-18 18:06:03,494 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-18 18:06:03,495 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-18 18:06:03,496 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-18 18:06:03,496 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-18 18:06:03,496 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-18 18:06:03,496 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-18 18:06:03,496 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-18 18:06:03,514 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-01-18 18:06:03,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-18 18:06:03,522 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 18:06:03,523 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-18 18:06:03,528 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-18 18:06:03,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 18:06:03,537 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2019-01-18 18:06:03,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 18:06:03,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:06:03,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 18:06:03,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:06:03,582 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 18:06:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 18:06:03,874 WARN L181 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 10 [2019-01-18 18:06:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:06:03,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-18 18:06:03,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-18 18:06:03,918 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-18 18:06:03,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-18 18:06:03,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-18 18:06:03,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-18 18:06:03,939 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-01-18 18:06:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 18:06:04,021 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-01-18 18:06:04,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-18 18:06:04,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-01-18 18:06:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 18:06:04,034 INFO L225 Difference]: With dead ends: 15 [2019-01-18 18:06:04,034 INFO L226 Difference]: Without dead ends: 5 [2019-01-18 18:06:04,038 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-18 18:06:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-01-18 18:06:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-01-18 18:06:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-01-18 18:06:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-01-18 18:06:04,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-01-18 18:06:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 18:06:04,071 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-01-18 18:06:04,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-18 18:06:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-01-18 18:06:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-18 18:06:04,072 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 18:06:04,072 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-18 18:06:04,073 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-18 18:06:04,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 18:06:04,073 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2019-01-18 18:06:04,073 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 18:06:04,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:06:04,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 18:06:04,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:06:04,075 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 18:06:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 18:06:04,471 WARN L181 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2019-01-18 18:06:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:06:04,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 18:06:04,505 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-18 18:06:04,506 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-01-18 18:06:04,508 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [9] [2019-01-18 18:06:04,567 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-18 18:06:04,568 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-18 18:06:05,215 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-18 18:06:05,218 INFO L272 AbstractInterpreter]: Visited 4 different actions 9 times. Merged at 3 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-18 18:06:05,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 18:06:05,228 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-18 18:06:05,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 18:06:05,229 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2019-01-18 18:06:05,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 18:06:05,240 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-18 18:06:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 18:06:05,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-18 18:06:05,390 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2019-01-18 18:06:05,407 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:05,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:05,410 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2019-01-18 18:06:05,411 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:05,433 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:05,451 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:05,452 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:16 [2019-01-18 18:06:05,731 WARN L181 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-01-18 18:06:05,759 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:05,769 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:05,778 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:05,941 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 58 [2019-01-18 18:06:05,971 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:05,997 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,051 INFO L303 Elim1Store]: Index analysis took 105 ms [2019-01-18 18:06:06,056 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 70 [2019-01-18 18:06:06,057 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:06,222 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,228 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,232 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,234 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,238 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,239 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,243 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,283 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 90 [2019-01-18 18:06:06,285 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:06,369 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-01-18 18:06:06,373 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,375 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,378 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,394 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 57 [2019-01-18 18:06:06,427 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,428 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,430 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 66 [2019-01-18 18:06:06,431 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:06,694 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,719 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,744 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,769 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,794 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,807 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,809 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:06,809 INFO L303 Elim1Store]: Index analysis took 152 ms [2019-01-18 18:06:06,811 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 86 [2019-01-18 18:06:06,812 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:06,884 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-01-18 18:06:06,965 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2019-01-18 18:06:06,965 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:42, output treesize:145 [2019-01-18 18:06:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:06:07,110 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-18 18:06:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:06:07,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-18 18:06:07,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2019-01-18 18:06:07,264 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-18 18:06:07,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-18 18:06:07,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-18 18:06:07,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-18 18:06:07,266 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 6 states. [2019-01-18 18:06:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 18:06:11,347 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-01-18 18:06:11,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-18 18:06:11,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-01-18 18:06:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 18:06:11,348 INFO L225 Difference]: With dead ends: 8 [2019-01-18 18:06:11,348 INFO L226 Difference]: Without dead ends: 6 [2019-01-18 18:06:11,349 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-18 18:06:11,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-01-18 18:06:11,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-01-18 18:06:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-01-18 18:06:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-01-18 18:06:11,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-01-18 18:06:11,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 18:06:11,352 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-01-18 18:06:11,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-18 18:06:11,352 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-01-18 18:06:11,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-18 18:06:11,353 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 18:06:11,353 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-01-18 18:06:11,353 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-18 18:06:11,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 18:06:11,354 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2019-01-18 18:06:11,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 18:06:11,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:06:11,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 18:06:11,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:06:11,355 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 18:06:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 18:06:11,737 WARN L181 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2019-01-18 18:06:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:06:11,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 18:06:11,746 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-18 18:06:11,746 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-01-18 18:06:11,746 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-01-18 18:06:11,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 18:06:11,747 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-18 18:06:11,759 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-01-18 18:06:11,759 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-01-18 18:06:11,770 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-01-18 18:06:11,771 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-18 18:06:11,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-18 18:06:11,789 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2019-01-18 18:06:11,802 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:11,804 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:11,805 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2019-01-18 18:06:11,806 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:11,824 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:11,837 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:11,838 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:16 [2019-01-18 18:06:11,920 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:11,934 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:11,939 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:11,974 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 53 [2019-01-18 18:06:11,982 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:11,984 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:11,986 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:11,987 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 66 [2019-01-18 18:06:11,989 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:12,088 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,089 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,091 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,092 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 42 [2019-01-18 18:06:12,094 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:12,166 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-01-18 18:06:12,174 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,176 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,193 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,215 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 54 [2019-01-18 18:06:12,224 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,232 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,233 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,251 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 70 [2019-01-18 18:06:12,253 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:12,310 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,312 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,313 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,323 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 46 [2019-01-18 18:06:12,324 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:12,522 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-01-18 18:06:12,597 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2019-01-18 18:06:12,598 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:45, output treesize:157 [2019-01-18 18:06:12,832 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,834 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,837 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,873 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 72 [2019-01-18 18:06:12,884 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,885 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,886 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,892 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,906 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 100 [2019-01-18 18:06:12,907 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:12,963 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:12,967 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,969 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,971 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,972 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 71 [2019-01-18 18:06:12,977 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,979 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,980 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,982 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:12,984 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 93 [2019-01-18 18:06:12,985 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:13,017 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:13,241 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,243 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,245 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,247 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,249 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,251 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,268 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,273 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 122 [2019-01-18 18:06:13,282 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,295 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,298 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,299 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,318 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 167 [2019-01-18 18:06:13,320 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:13,380 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:13,384 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,386 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,389 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,391 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,400 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,402 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,404 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 125 [2019-01-18 18:06:13,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,432 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,455 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,477 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:13,479 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 164 [2019-01-18 18:06:13,481 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:13,685 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:13,786 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 3 xjuncts. [2019-01-18 18:06:13,787 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:125, output treesize:178 [2019-01-18 18:06:14,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:06:14,004 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-18 18:06:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-18 18:06:14,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-18 18:06:14,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2019-01-18 18:06:14,111 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-18 18:06:14,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-01-18 18:06:14,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-01-18 18:06:14,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2019-01-18 18:06:14,112 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 8 states. [2019-01-18 18:06:20,675 WARN L181 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2019-01-18 18:06:24,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 18:06:24,802 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2019-01-18 18:06:24,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-18 18:06:24,803 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 5 [2019-01-18 18:06:24,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 18:06:24,803 INFO L225 Difference]: With dead ends: 10 [2019-01-18 18:06:24,803 INFO L226 Difference]: Without dead ends: 8 [2019-01-18 18:06:24,804 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2019-01-18 18:06:24,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-18 18:06:24,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-01-18 18:06:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-01-18 18:06:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-01-18 18:06:24,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2019-01-18 18:06:24,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 18:06:24,808 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-01-18 18:06:24,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-01-18 18:06:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-01-18 18:06:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-18 18:06:24,809 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 18:06:24,809 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2019-01-18 18:06:24,809 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-18 18:06:24,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 18:06:24,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 3 times [2019-01-18 18:06:24,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 18:06:24,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:06:24,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-18 18:06:24,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:06:24,811 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 18:06:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 18:06:25,089 WARN L181 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 11 [2019-01-18 18:06:25,272 WARN L181 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2019-01-18 18:06:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:06:25,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 18:06:25,432 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-18 18:06:25,433 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-01-18 18:06:25,433 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-01-18 18:06:25,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 18:06:25,433 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2019-01-18 18:06:25,442 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-01-18 18:06:25,443 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2019-01-18 18:06:25,575 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-01-18 18:06:25,575 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-18 18:06:25,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-18 18:06:25,581 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2019-01-18 18:06:25,583 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,585 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,586 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2019-01-18 18:06:25,587 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:25,622 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:25,630 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:25,631 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:16 [2019-01-18 18:06:25,696 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,697 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,698 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 50 [2019-01-18 18:06:25,703 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,705 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,706 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 50 [2019-01-18 18:06:25,707 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:25,743 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:25,747 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,749 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,750 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,751 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 56 [2019-01-18 18:06:25,758 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,759 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,760 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:25,761 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 69 [2019-01-18 18:06:25,762 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:25,782 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:25,814 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-01-18 18:06:25,815 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:47, output treesize:80 [2019-01-18 18:06:26,051 WARN L181 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-01-18 18:06:26,054 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,055 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,057 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,058 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 89 [2019-01-18 18:06:26,066 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,066 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,068 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,069 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,071 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 69 [2019-01-18 18:06:26,071 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:26,150 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:26,235 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,239 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,258 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,272 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,275 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,277 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,278 INFO L683 Elim1Store]: detected equality via solver [2019-01-18 18:06:26,279 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,280 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,282 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 148 [2019-01-18 18:06:26,287 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,289 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,293 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,294 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,296 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 136 [2019-01-18 18:06:26,298 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:26,374 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:26,425 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-01-18 18:06:26,425 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:157, output treesize:129 [2019-01-18 18:06:26,933 WARN L181 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-01-18 18:06:26,972 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,980 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,982 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,983 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,984 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,985 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,987 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 161 [2019-01-18 18:06:26,997 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,998 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:26,999 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,001 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,002 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,004 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 159 [2019-01-18 18:06:27,005 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:27,062 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:27,777 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,783 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,785 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,801 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,809 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,809 INFO L683 Elim1Store]: detected equality via solver [2019-01-18 18:06:27,811 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,812 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,817 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,818 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,828 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,831 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,832 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,833 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 270 [2019-01-18 18:06:27,878 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,903 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,912 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,915 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,917 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:27,918 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 17 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 192 [2019-01-18 18:06:27,919 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:28,091 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:28,268 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-01-18 18:06:28,268 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:225, output treesize:177 [2019-01-18 18:06:30,487 WARN L181 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-01-18 18:06:33,963 WARN L181 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-01-18 18:06:33,973 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:33,978 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:33,986 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:33,988 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:33,990 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:33,993 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:33,995 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:34,000 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:34,003 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:34,010 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:34,011 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 296 [2019-01-18 18:06:34,054 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:34,081 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:34,092 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:34,094 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:34,095 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:34,098 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:34,100 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 212 [2019-01-18 18:06:34,101 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:34,197 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:35,613 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,625 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,638 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,663 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,669 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,678 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,814 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,827 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,833 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,844 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,901 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,928 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,957 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:35,989 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:36,020 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:36,021 INFO L303 Elim1Store]: Index analysis took 432 ms [2019-01-18 18:06:36,022 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 394 [2019-01-18 18:06:36,051 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:36,061 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:36,068 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:36,074 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:36,075 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:36,093 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:06:36,095 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 23 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 319 [2019-01-18 18:06:36,096 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:06:36,592 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:06:36,765 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-01-18 18:06:36,766 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:317, output treesize:249 [2019-01-18 18:06:44,991 WARN L181 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-01-18 18:06:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:06:44,999 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-18 18:06:47,752 WARN L181 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-01-18 18:06:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 2 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-18 18:06:57,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-18 18:06:57,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 15 [2019-01-18 18:06:57,568 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-18 18:06:57,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-01-18 18:06:57,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-01-18 18:06:57,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=150, Unknown=4, NotChecked=0, Total=240 [2019-01-18 18:06:57,569 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 12 states. [2019-01-18 18:07:15,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 18:07:15,550 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-01-18 18:07:15,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-01-18 18:07:15,550 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 7 [2019-01-18 18:07:15,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 18:07:15,551 INFO L225 Difference]: With dead ends: 15 [2019-01-18 18:07:15,551 INFO L226 Difference]: Without dead ends: 12 [2019-01-18 18:07:15,552 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=86, Invalid=150, Unknown=4, NotChecked=0, Total=240 [2019-01-18 18:07:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-01-18 18:07:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-01-18 18:07:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-01-18 18:07:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-01-18 18:07:15,557 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2019-01-18 18:07:15,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 18:07:15,558 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-01-18 18:07:15,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-01-18 18:07:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-01-18 18:07:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-18 18:07:15,558 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 18:07:15,558 INFO L402 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2019-01-18 18:07:15,559 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-18 18:07:15,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 18:07:15,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 4 times [2019-01-18 18:07:15,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 18:07:15,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:07:15,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-18 18:07:15,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:07:15,560 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 18:07:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 18:07:16,099 WARN L181 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 15 [2019-01-18 18:07:16,450 WARN L181 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 10 [2019-01-18 18:07:16,587 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-01-18 18:07:16,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 18:07:16,588 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-18 18:07:16,589 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-01-18 18:07:16,589 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-01-18 18:07:16,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 18:07:16,589 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-18 18:07:16,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 18:07:16,599 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-18 18:07:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 18:07:18,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-18 18:07:18,784 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2019-01-18 18:07:18,790 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,792 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,793 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2019-01-18 18:07:18,793 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:18,803 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:18,811 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:18,812 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:16 [2019-01-18 18:07:18,859 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,861 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 50 [2019-01-18 18:07:18,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,866 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,867 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 50 [2019-01-18 18:07:18,868 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:18,886 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:18,889 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,890 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,891 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,892 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 56 [2019-01-18 18:07:18,898 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,900 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,900 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:18,902 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 69 [2019-01-18 18:07:18,903 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:18,924 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:18,968 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-01-18 18:07:18,969 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:47, output treesize:80 [2019-01-18 18:07:19,260 WARN L181 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-01-18 18:07:19,264 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:19,265 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:19,266 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:19,267 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 89 [2019-01-18 18:07:19,274 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:19,275 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:19,276 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:19,278 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:19,279 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 69 [2019-01-18 18:07:19,280 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:19,318 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:20,343 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:20,345 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:20,354 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:20,354 INFO L683 Elim1Store]: detected equality via solver [2019-01-18 18:07:20,357 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:20,358 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:20,360 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:20,361 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:20,362 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 130 [2019-01-18 18:07:20,369 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:20,371 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:20,374 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:20,378 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:20,380 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 126 [2019-01-18 18:07:20,381 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:20,437 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:20,509 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-01-18 18:07:20,509 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:157, output treesize:129 [2019-01-18 18:07:21,300 WARN L181 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-01-18 18:07:21,308 INFO L683 Elim1Store]: detected equality via solver [2019-01-18 18:07:21,315 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,321 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,326 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,331 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,343 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,348 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,352 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,356 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,356 INFO L683 Elim1Store]: detected equality via solver [2019-01-18 18:07:21,362 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,367 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,369 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,371 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,372 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 259 [2019-01-18 18:07:21,386 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,387 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,394 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,396 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,397 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:21,399 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 17 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 178 [2019-01-18 18:07:21,400 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:21,534 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:22,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:22,108 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:22,109 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:22,110 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:22,112 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:22,113 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:22,115 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 171 [2019-01-18 18:07:22,121 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:22,123 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:22,123 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:22,124 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:22,126 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:22,128 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 127 [2019-01-18 18:07:22,129 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:22,191 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:22,312 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-01-18 18:07:22,312 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:229, output treesize:173 [2019-01-18 18:07:28,386 WARN L181 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-01-18 18:07:28,393 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,395 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,397 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,400 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,402 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,411 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,412 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,414 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 298 [2019-01-18 18:07:28,445 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,446 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,448 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,450 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,452 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,454 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:28,456 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 214 [2019-01-18 18:07:28,458 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:28,557 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:29,674 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,723 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,743 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,754 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,768 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,779 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,807 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,815 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,865 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,878 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,903 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,914 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,961 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,987 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:29,999 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:30,015 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:30,015 INFO L303 Elim1Store]: Index analysis took 368 ms [2019-01-18 18:07:30,016 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 378 [2019-01-18 18:07:30,031 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:30,033 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:30,036 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:30,067 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:30,071 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:30,081 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:30,082 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 23 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 287 [2019-01-18 18:07:30,083 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:30,287 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:30,932 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-01-18 18:07:30,933 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:313, output treesize:235 [2019-01-18 18:07:39,952 WARN L181 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 64 [2019-01-18 18:07:45,540 WARN L181 SmtUtils]: Spent 5.58 s on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-01-18 18:07:45,561 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,567 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,577 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,595 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,602 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,611 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,624 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,629 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,639 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,652 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,657 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,666 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,677 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,688 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,693 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,694 INFO L303 Elim1Store]: Index analysis took 152 ms [2019-01-18 18:07:45,695 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 491 [2019-01-18 18:07:45,704 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,706 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,710 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,714 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,715 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,717 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:45,719 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 367 [2019-01-18 18:07:45,721 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:46,122 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:51,188 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,268 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,310 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,362 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,372 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,462 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,492 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,601 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,612 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,686 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,751 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,797 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,863 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,935 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,975 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:51,995 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:52,004 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:52,031 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:52,049 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:52,096 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:52,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:52,291 INFO L303 Elim1Store]: Index analysis took 1161 ms [2019-01-18 18:07:52,293 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 585 [2019-01-18 18:07:53,055 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:53,078 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:53,103 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:53,120 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:53,128 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:53,138 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:53,149 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:53,149 INFO L303 Elim1Store]: Index analysis took 853 ms [2019-01-18 18:07:53,151 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 30 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 450 [2019-01-18 18:07:53,152 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:53,929 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:55,119 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-01-18 18:07:55,120 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:423, output treesize:319 [2019-01-18 18:08:12,430 WARN L181 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 72 [2019-01-18 18:08:25,652 WARN L181 SmtUtils]: Spent 13.22 s on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-01-18 18:08:25,963 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:26,051 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:26,233 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:26,286 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:26,386 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:26,510 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:26,565 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:26,652 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:26,714 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:26,838 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:26,892 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:27,051 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:27,186 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:27,404 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:27,459 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:27,558 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:27,652 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:28,087 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:28,170 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:28,244 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:28,326 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:28,361 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:28,478 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:28,828 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:28,931 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:29,187 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:29,306 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:29,460 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:29,580 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:29,580 INFO L303 Elim1Store]: Index analysis took 3925 ms [2019-01-18 18:08:29,581 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 876 [2019-01-18 18:08:30,657 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:30,722 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:30,728 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:30,731 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:30,747 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:30,757 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:30,761 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:30,763 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:30,764 INFO L303 Elim1Store]: Index analysis took 1177 ms [2019-01-18 18:08:30,765 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 38 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 713 [2019-01-18 18:08:30,766 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:08:32,767 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:08:50,132 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,146 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,152 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,155 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,166 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,169 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,176 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,190 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,198 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,208 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,215 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,231 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,237 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,238 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,239 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,240 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,246 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,255 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,261 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,265 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,268 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,269 INFO L303 Elim1Store]: Index analysis took 153 ms [2019-01-18 18:08:50,270 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 244 treesize of output 746 [2019-01-18 18:08:50,282 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,285 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,288 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,289 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,294 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,297 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,299 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:08:50,302 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 574 [2019-01-18 18:08:50,303 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:08:50,737 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:08:52,448 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-01-18 18:08:52,449 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:547, output treesize:445 [2019-01-18 18:09:20,879 WARN L181 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 81 [2019-01-18 18:09:40,861 WARN L181 SmtUtils]: Spent 19.97 s on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2019-01-18 18:09:40,959 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:41,091 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:41,187 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:41,273 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:41,312 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:41,437 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:41,533 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:41,698 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:41,852 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:41,957 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:42,005 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:42,030 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:42,168 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:42,228 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:42,315 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:42,452 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:42,561 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:42,620 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:42,667 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:42,727 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:42,810 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:43,086 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:43,415 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:43,471 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:43,844 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:43,899 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:43,958 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:44,062 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:44,116 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:44,213 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:44,330 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:44,405 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:44,406 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:44,612 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:44,668 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:44,754 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:44,813 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:44,814 INFO L303 Elim1Store]: Index analysis took 3950 ms [2019-01-18 18:09:44,815 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 319 treesize of output 1173 [2019-01-18 18:09:45,053 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:45,081 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:45,083 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:45,089 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:45,092 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:45,096 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:45,099 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:45,102 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:45,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:09:45,107 INFO L303 Elim1Store]: Index analysis took 280 ms [2019-01-18 18:09:45,110 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 46 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 1238 [2019-01-18 18:09:45,112 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:09:49,055 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:10:17,261 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,265 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,281 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,284 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,295 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,310 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,320 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,326 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,358 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,388 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,389 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,392 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,400 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,401 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,402 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,403 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,421 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,425 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,427 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,428 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,451 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,455 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,456 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,507 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,516 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,516 INFO L303 Elim1Store]: Index analysis took 287 ms [2019-01-18 18:10:17,517 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 311 treesize of output 1091 [2019-01-18 18:10:17,532 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,535 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,537 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,539 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,542 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,543 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,546 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,556 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,557 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:10:17,559 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 37 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 863 [2019-01-18 18:10:17,561 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:10:18,302 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:10:24,616 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-01-18 18:10:24,616 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:689, output treesize:557 [2019-01-18 18:10:55,691 WARN L181 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 89 [2019-01-18 18:11:33,568 WARN L181 SmtUtils]: Spent 37.87 s on a formula simplification. DAG size of input: 112 DAG size of output: 100 [2019-01-18 18:11:33,742 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:33,800 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:33,869 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:34,041 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:34,161 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:34,418 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:34,506 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:34,670 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:34,777 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:34,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:34,969 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:35,497 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:35,854 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:35,896 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:36,066 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:36,194 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:36,586 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:36,823 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:37,031 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:37,363 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:37,670 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:37,794 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:38,149 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:38,383 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:38,444 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:38,668 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:38,940 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:39,120 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:41,141 WARN L670 Elim1Store]: solver failed to check if following equality is implied: (= (mod (+ (mod (+ (mod (+ (mod (+ v_subst_4 1) 256) 1) 256) 1) 256) 1) 256) (+ v_subst_4 (- 1))) [2019-01-18 18:11:41,142 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:41,212 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:41,263 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:41,425 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:41,563 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:41,664 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:42,313 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:42,702 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:42,762 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:42,846 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:42,847 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:42,963 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:43,366 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:43,509 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:43,626 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:43,843 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:44,172 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:44,563 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:44,563 INFO L303 Elim1Store]: Index analysis took 10992 ms [2019-01-18 18:11:44,565 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 380 treesize of output 1732 [2019-01-18 18:11:46,703 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:46,711 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:46,992 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:46,995 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:47,011 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:47,023 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:47,041 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:47,062 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:47,084 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:47,096 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:11:47,097 INFO L303 Elim1Store]: Index analysis took 2526 ms [2019-01-18 18:11:47,098 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 57 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 318 treesize of output 1417 [2019-01-18 18:11:47,100 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-18 18:12:02,858 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:12:40,006 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,029 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,030 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,034 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,035 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,037 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,066 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,115 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,124 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,197 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,207 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,229 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,282 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,286 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,298 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,326 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,331 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,333 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,335 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,342 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,351 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,401 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,403 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,412 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,437 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,454 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,468 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,470 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,471 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,472 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,478 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,517 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,532 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,546 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,547 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,547 INFO L303 Elim1Store]: Index analysis took 631 ms [2019-01-18 18:12:40,548 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 394 treesize of output 1540 [2019-01-18 18:12:40,571 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,574 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,576 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,578 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,580 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,584 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,586 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,588 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,591 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,596 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:12:40,597 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 46 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 295 treesize of output 1248 [2019-01-18 18:12:40,598 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-18 18:12:41,886 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:12:48,814 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-01-18 18:12:48,815 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:841, output treesize:653 [2019-01-18 18:13:29,568 WARN L181 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 96 [2019-01-18 18:13:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 21 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:13:29,576 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-18 18:13:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-01-18 18:13:37,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-18 18:13:37,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 4] total 19 [2019-01-18 18:13:37,928 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-18 18:13:37,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-01-18 18:13:37,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-01-18 18:13:37,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=208, Unknown=51, NotChecked=0, Total=380 [2019-01-18 18:13:37,930 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 16 states. [2019-01-18 18:15:14,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 18:15:14,366 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-01-18 18:15:14,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-01-18 18:15:14,371 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 11 [2019-01-18 18:15:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 18:15:14,371 INFO L225 Difference]: With dead ends: 13 [2019-01-18 18:15:14,371 INFO L226 Difference]: Without dead ends: 0 [2019-01-18 18:15:14,372 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 11 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 138.4s TimeCoverageRelationStatistics Valid=121, Invalid=208, Unknown=51, NotChecked=0, Total=380 [2019-01-18 18:15:14,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-18 18:15:14,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-18 18:15:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-18 18:15:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-18 18:15:14,372 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-01-18 18:15:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 18:15:14,373 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-18 18:15:14,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-01-18 18:15:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-18 18:15:14,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-18 18:15:14,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-18 18:15:37,075 WARN L181 SmtUtils]: Spent 22.67 s on a formula simplification. DAG size of input: 374 DAG size of output: 35 [2019-01-18 18:15:37,077 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 28) no Hoare annotation was computed. [2019-01-18 18:15:37,077 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 9 30) no Hoare annotation was computed. [2019-01-18 18:15:37,078 INFO L448 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2019-01-18 18:15:37,078 INFO L448 ceAbstractionStarter]: For program point L27-1(lines 9 30) no Hoare annotation was computed. [2019-01-18 18:15:37,078 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 9 30) no Hoare annotation was computed. [2019-01-18 18:15:37,078 INFO L444 ceAbstractionStarter]: At program point L18-1(lines 18 29) the Hoare annotation is: (let ((.cse0 (select main_a main_x)) (.cse1 (select main_a main_y))) (or (and (= .cse0 1000) (= .cse1 0) (= main_y (+ main_x 1))) (and (= .cse0 .cse1) (not (= 0 .cse1))) (exists ((main_yold Int)) (let ((.cse2 (select main_a main_yold)) (.cse3 (select main_a (+ main_yold (- 1))))) (and (= (mod main_yold 256) main_x) (= 0 .cse2) (= main_y (mod (+ main_yold 1) 256)) (= (select main_a main_y) .cse2) (= (select main_a main_x) .cse3) (= 1000 .cse3)))))) [2019-01-18 18:15:37,088 INFO L202 PluginConnector]: Adding new model SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 06:15:37 BoogieIcfgContainer [2019-01-18 18:15:37,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-18 18:15:37,089 INFO L168 Benchmark]: Toolchain (without parser) took 574039.28 ms. Allocated memory was 141.0 MB in the beginning and 288.4 MB in the end (delta: 147.3 MB). Free memory was 108.5 MB in the beginning and 189.8 MB in the end (delta: -81.3 MB). Peak memory consumption was 66.0 MB. Max. memory is 7.1 GB. [2019-01-18 18:15:37,090 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory is still 109.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-18 18:15:37,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.47 ms. Allocated memory is still 141.0 MB. Free memory was 108.3 MB in the beginning and 106.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-01-18 18:15:37,090 INFO L168 Benchmark]: Boogie Preprocessor took 23.31 ms. Allocated memory is still 141.0 MB. Free memory was 106.6 MB in the beginning and 105.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-01-18 18:15:37,091 INFO L168 Benchmark]: RCFGBuilder took 296.65 ms. Allocated memory is still 141.0 MB. Free memory was 105.4 MB in the beginning and 96.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. [2019-01-18 18:15:37,091 INFO L168 Benchmark]: TraceAbstraction took 573677.64 ms. Allocated memory was 141.0 MB in the beginning and 288.4 MB in the end (delta: 147.3 MB). Free memory was 96.6 MB in the beginning and 189.8 MB in the end (delta: -93.2 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2019-01-18 18:15:37,093 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 0.21 ms. Allocated memory is still 141.0 MB. Free memory is still 109.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.47 ms. Allocated memory is still 141.0 MB. Free memory was 108.3 MB in the beginning and 106.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.31 ms. Allocated memory is still 141.0 MB. Free memory was 106.6 MB in the beginning and 105.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 296.65 ms. Allocated memory is still 141.0 MB. Free memory was 105.4 MB in the beginning and 96.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 573677.64 ms. Allocated memory was 141.0 MB in the beginning and 288.4 MB in the end (delta: 147.3 MB). Free memory was 96.6 MB in the beginning and 189.8 MB in the end (delta: -93.2 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 28]: 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: (((a[x] == 1000 && a[y] == 0) && y == x + 1) || (a[x] == a[y] && !(0 == a[y]))) || (exists main_yold : int :: ((((main_yold % 256 == x && 0 == a[main_yold]) && y == (main_yold + 1) % 256) && a[y] == a[main_yold]) && a[x] == a[main_yold + -1]) && 1000 == a[main_yold + -1]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 573.5s OverallTime, 5 OverallIterations, 8 TraceHistogramMax, 129.3s AutomataDifference, 0.0s DeadEndRemovalTime, 22.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 3 SDslu, 3 SDs, 0 SdLazy, 87 SolverSat, 9 SolverUnsat, 60 SolverUnknown, 0 SolverNotchecked, 128.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 8 SyntacticMatches, 14 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 164.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.7s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 10 NumberOfFragments, 73 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 3453 FormulaSimplificationTreeSizeReductionInter, 22.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 417.8s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 71 ConstructedInterpolants, 18 QuantifiedInterpolants, 68048 SizeOfPredicates, 38 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 30/150 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...