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_compound_exp_cong.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/SkatingStrawberry.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f57a05f [2019-01-08 13:56:24,887 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-08 13:56:24,889 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-08 13:56:24,900 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-01-08 13:56:24,932 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-08 13:56:24,945 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-08 13:56:24,945 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-08 13:56:24,946 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-08 13:56:24,946 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-08 13:56:24,947 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-08 13:56:24,947 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-08 13:56:24,947 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-08 13:56:24,947 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-08 13:56:24,947 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-08 13:56:24,948 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-08 13:56:24,948 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-08 13:56:24,948 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-08 13:56:24,948 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-08 13:56:24,948 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-08 13:56:24,949 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-08 13:56:24,949 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-08 13:56:24,949 INFO L133 SettingsManager]: * Use SBE=true [2019-01-08 13:56:24,950 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-08 13:56:24,950 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-08 13:56:24,950 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-08 13:56:24,950 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-08 13:56:24,950 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-08 13:56:24,951 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-08 13:56:24,951 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-08 13:56:24,951 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-08 13:56:24,951 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-08 13:56:24,951 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-08 13:56:24,952 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-08 13:56:24,952 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-08 13:56:24,952 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-08 13:56:24,952 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-08 13:56:24,952 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-08 13:56:24,953 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-08 13:56:24,953 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-08 13:56:24,953 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-08 13:56:24,953 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-08 13:56:24,953 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-08 13:56:24,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-08 13:56:24,954 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-08 13:56:24,954 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-08 13:56:24,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-08 13:56:24,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-08 13:56:25,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-08 13:56:25,002 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-08 13:56:25,003 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-08 13:56:25,003 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/SkatingStrawberry.bpl [2019-01-08 13:56:25,004 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/SkatingStrawberry.bpl' [2019-01-08 13:56:25,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-08 13:56:25,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-08 13:56:25,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-08 13:56:25,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-08 13:56:25,043 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-08 13:56:25,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:25" (1/1) ... [2019-01-08 13:56:25,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:25" (1/1) ... [2019-01-08 13:56:25,077 WARN L165 Inliner]: Program contained no entry procedure! [2019-01-08 13:56:25,077 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-01-08 13:56:25,078 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-01-08 13:56:25,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-08 13:56:25,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-08 13:56:25,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-08 13:56:25,081 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-08 13:56:25,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:25" (1/1) ... [2019-01-08 13:56:25,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:25" (1/1) ... [2019-01-08 13:56:25,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:25" (1/1) ... [2019-01-08 13:56:25,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:25" (1/1) ... [2019-01-08 13:56:25,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:25" (1/1) ... [2019-01-08 13:56:25,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:25" (1/1) ... [2019-01-08 13:56:25,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:25" (1/1) ... [2019-01-08 13:56:25,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-08 13:56:25,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-08 13:56:25,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-08 13:56:25,105 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-08 13:56:25,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:25" (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:8192 -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:8192 -smt2 -in -t:2000 [2019-01-08 13:56:25,171 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-01-08 13:56:25,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-08 13:56:25,172 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-08 13:56:25,400 INFO L278 CfgBuilder]: Using library mode [2019-01-08 13:56:25,400 INFO L286 CfgBuilder]: Removed 1 assue(true) statements. [2019-01-08 13:56:25,402 INFO L202 PluginConnector]: Adding new model SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 01:56:25 BoogieIcfgContainer [2019-01-08 13:56:25,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-08 13:56:25,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-08 13:56:25,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-08 13:56:25,407 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-08 13:56:25,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:25" (1/2) ... [2019-01-08 13:56:25,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5376b804 and model type SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 01:56:25, skipping insertion in model container [2019-01-08 13:56:25,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 01:56:25" (2/2) ... [2019-01-08 13:56:25,412 INFO L112 eAbstractionObserver]: Analyzing ICFG SkatingStrawberry.bpl [2019-01-08 13:56:25,423 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-08 13:56:25,433 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-08 13:56:25,452 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-08 13:56:25,494 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-08 13:56:25,495 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-08 13:56:25,495 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-08 13:56:25,495 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-08 13:56:25,495 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-08 13:56:25,498 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-08 13:56:25,498 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-08 13:56:25,498 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-08 13:56:25,516 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-01-08 13:56:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-08 13:56:25,530 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 13:56:25,533 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-08 13:56:25,536 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-08 13:56:25,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:56:25,544 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2019-01-08 13:56:25,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 13:56:25,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:56:25,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:56:25,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:56:25,596 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 13:56:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:56:25,903 WARN L181 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 10 [2019-01-08 13:56:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:56:25,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-08 13:56:25,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-08 13:56:25,945 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-08 13:56:25,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-08 13:56:25,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-08 13:56:25,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-08 13:56:25,969 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-01-08 13:56:26,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 13:56:26,038 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-01-08 13:56:26,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-08 13:56:26,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-01-08 13:56:26,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 13:56:26,051 INFO L225 Difference]: With dead ends: 15 [2019-01-08 13:56:26,052 INFO L226 Difference]: Without dead ends: 5 [2019-01-08 13:56:26,055 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 [2019-01-08 13:56:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-01-08 13:56:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-01-08 13:56:26,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-01-08 13:56:26,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-01-08 13:56:26,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-01-08 13:56:26,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 13:56:26,091 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-01-08 13:56:26,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-08 13:56:26,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-01-08 13:56:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-08 13:56:26,092 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 13:56:26,092 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-08 13:56:26,092 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-08 13:56:26,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:56:26,093 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2019-01-08 13:56:26,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 13:56:26,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:56:26,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:56:26,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:56:26,094 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 13:56:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:56:26,524 WARN L181 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2019-01-08 13:56:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:56:26,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:56:26,573 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 13:56:26,574 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-01-08 13:56:26,576 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [9] [2019-01-08 13:56:26,623 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-08 13:56:26,623 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-08 13:56:26,694 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-08 13:56:26,695 INFO L272 AbstractInterpreter]: Visited 4 different actions 4 times. Never merged. Never widened. Performed 22 root evaluator evaluations with a maximum evaluation depth of 3. Performed 22 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-08 13:56:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:56:26,702 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-08 13:56:26,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:56:26,702 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 [2019-01-08 13:56:26,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:56:26,712 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 13:56:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:56:26,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 13:56:26,796 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 [2019-01-08 13:56:26,831 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:26,833 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:26,836 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 [2019-01-08 13:56:26,838 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:26,903 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:26,932 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:26,933 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:16 [2019-01-08 13:56:27,219 WARN L181 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-01-08 13:56:27,228 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,255 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,266 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,411 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 [2019-01-08 13:56:27,429 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,456 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 [2019-01-08 13:56:27,458 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:27,617 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,628 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,632 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,634 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,638 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,640 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,644 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,694 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 [2019-01-08 13:56:27,698 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:27,816 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-01-08 13:56:27,822 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,826 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,833 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,849 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 [2019-01-08 13:56:27,867 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,868 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:27,874 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 [2019-01-08 13:56:27,875 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:28,165 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:28,186 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:28,212 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:28,235 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:28,256 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:28,281 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:28,288 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:28,289 INFO L303 Elim1Store]: Index analysis took 161 ms [2019-01-08 13:56:28,290 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 [2019-01-08 13:56:28,292 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:28,348 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-01-08 13:56:28,435 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. [2019-01-08 13:56:28,436 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:42, output treesize:145 [2019-01-08 13:56:28,587 WARN L181 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2019-01-08 13:56:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:56:28,600 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 13:56:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:56:28,700 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-08 13:56:28,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2019-01-08 13:56:28,701 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-08 13:56:28,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-08 13:56:28,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-08 13:56:28,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-08 13:56:28,703 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 6 states. [2019-01-08 13:56:32,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 13:56:32,806 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-01-08 13:56:32,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-08 13:56:32,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-01-08 13:56:32,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 13:56:32,807 INFO L225 Difference]: With dead ends: 8 [2019-01-08 13:56:32,807 INFO L226 Difference]: Without dead ends: 6 [2019-01-08 13:56:32,809 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-08 13:56:32,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-01-08 13:56:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-01-08 13:56:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-01-08 13:56:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-01-08 13:56:32,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-01-08 13:56:32,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 13:56:32,813 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-01-08 13:56:32,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-08 13:56:32,813 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-01-08 13:56:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-08 13:56:32,813 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 13:56:32,813 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-01-08 13:56:32,814 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-08 13:56:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:56:32,814 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2019-01-08 13:56:32,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 13:56:32,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:56:32,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:56:32,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:56:32,816 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 13:56:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:56:33,120 WARN L181 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2019-01-08 13:56:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:56:33,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:56:33,145 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 13:56:33,145 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-01-08 13:56:33,145 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-01-08 13:56:33,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:56:33,146 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 [2019-01-08 13:56:33,159 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-01-08 13:56:33,159 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-01-08 13:56:33,173 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-01-08 13:56:33,173 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-08 13:56:33,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 13:56:33,187 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 [2019-01-08 13:56:33,194 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,196 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,197 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 [2019-01-08 13:56:33,198 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:33,216 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:33,226 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:33,227 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:16 [2019-01-08 13:56:33,305 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,319 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,328 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,372 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 [2019-01-08 13:56:33,385 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,386 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,387 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,390 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 [2019-01-08 13:56:33,391 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:33,496 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,498 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,501 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,502 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 [2019-01-08 13:56:33,503 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:33,563 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-01-08 13:56:33,573 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,575 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,581 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,604 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 [2019-01-08 13:56:33,623 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,626 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,628 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,648 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 [2019-01-08 13:56:33,650 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:33,716 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,719 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,720 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:33,732 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 [2019-01-08 13:56:33,734 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:33,774 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-01-08 13:56:33,854 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. [2019-01-08 13:56:33,855 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:45, output treesize:157 [2019-01-08 13:56:34,135 WARN L181 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2019-01-08 13:56:34,140 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,142 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,151 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,173 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 [2019-01-08 13:56:34,194 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,196 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,198 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,205 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,222 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 [2019-01-08 13:56:34,224 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:34,297 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:34,301 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,303 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,305 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,307 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 [2019-01-08 13:56:34,329 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,330 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,332 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,335 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,337 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 [2019-01-08 13:56:34,338 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:34,376 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:34,687 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,690 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,693 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,695 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,701 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,712 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,721 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,732 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 [2019-01-08 13:56:34,851 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,867 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,870 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,872 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,894 INFO L303 Elim1Store]: Index analysis took 158 ms [2019-01-08 13:56:34,909 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 [2019-01-08 13:56:34,911 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:34,980 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:34,986 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:34,998 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:35,000 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:35,002 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:35,004 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:35,006 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:35,007 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:35,009 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 [2019-01-08 13:56:35,063 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:35,065 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:35,067 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:35,104 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:35,106 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 [2019-01-08 13:56:35,107 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:35,356 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:35,501 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. [2019-01-08 13:56:35,502 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:125, output treesize:178 [2019-01-08 13:56:36,064 WARN L181 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2019-01-08 13:56:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:56:36,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 13:56:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-08 13:56:36,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-08 13:56:36,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2019-01-08 13:56:36,173 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-08 13:56:36,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-01-08 13:56:36,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-01-08 13:56:36,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2019-01-08 13:56:36,174 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 8 states. [2019-01-08 13:56:41,635 WARN L181 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2019-01-08 13:56:46,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 13:56:46,072 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2019-01-08 13:56:46,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-08 13:56:46,072 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 5 [2019-01-08 13:56:46,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 13:56:46,073 INFO L225 Difference]: With dead ends: 10 [2019-01-08 13:56:46,073 INFO L226 Difference]: Without dead ends: 8 [2019-01-08 13:56:46,074 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2019-01-08 13:56:46,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-08 13:56:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-01-08 13:56:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-01-08 13:56:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-01-08 13:56:46,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2019-01-08 13:56:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 13:56:46,078 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-01-08 13:56:46,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-01-08 13:56:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-01-08 13:56:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-08 13:56:46,079 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 13:56:46,079 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2019-01-08 13:56:46,079 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-08 13:56:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:56:46,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 3 times [2019-01-08 13:56:46,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 13:56:46,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:56:46,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-08 13:56:46,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:56:46,081 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 13:56:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:56:46,609 WARN L181 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2019-01-08 13:56:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:56:46,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:56:46,676 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 13:56:46,676 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-01-08 13:56:46,676 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-01-08 13:56:46,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:56:46,677 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 [2019-01-08 13:56:46,693 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-01-08 13:56:46,693 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2019-01-08 13:56:46,825 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-01-08 13:56:46,825 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-08 13:56:46,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 13:56:46,835 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 [2019-01-08 13:56:46,841 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:46,843 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:46,844 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 [2019-01-08 13:56:46,844 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:46,855 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:46,863 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:46,863 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:16 [2019-01-08 13:56:46,959 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:46,960 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:46,961 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 [2019-01-08 13:56:47,006 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,031 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,032 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 [2019-01-08 13:56:47,033 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:47,252 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:47,258 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,261 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,263 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,264 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 [2019-01-08 13:56:47,273 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,275 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,277 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,278 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 [2019-01-08 13:56:47,279 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:47,302 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:47,335 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. [2019-01-08 13:56:47,336 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:47, output treesize:80 [2019-01-08 13:56:47,567 WARN L181 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-01-08 13:56:47,571 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,572 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,573 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,574 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 [2019-01-08 13:56:47,580 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,581 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,582 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,583 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,585 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 [2019-01-08 13:56:47,586 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:47,664 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:47,777 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,781 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,806 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,817 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,819 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,821 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,821 INFO L683 Elim1Store]: detected equality via solver [2019-01-08 13:56:47,823 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,825 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,827 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 [2019-01-08 13:56:47,837 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,838 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,840 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,844 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,845 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:47,847 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 [2019-01-08 13:56:47,848 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:47,928 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:47,980 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. [2019-01-08 13:56:47,980 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:157, output treesize:129 [2019-01-08 13:56:48,735 WARN L181 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-01-08 13:56:48,741 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:48,743 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:48,744 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:48,747 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:48,749 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:48,750 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:48,753 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 [2019-01-08 13:56:48,763 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:48,764 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:48,765 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:48,768 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:48,771 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:48,773 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 [2019-01-08 13:56:48,774 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:48,825 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:49,513 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,518 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,520 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,522 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,523 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,523 INFO L683 Elim1Store]: detected equality via solver [2019-01-08 13:56:49,532 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,537 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,539 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,540 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,550 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,551 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,555 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,557 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 [2019-01-08 13:56:49,603 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,619 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,625 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,627 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,628 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:49,630 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 [2019-01-08 13:56:49,632 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:49,774 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:49,901 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. [2019-01-08 13:56:49,902 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:225, output treesize:177 [2019-01-08 13:56:57,819 WARN L181 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-01-08 13:56:57,843 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,849 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,855 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,857 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,862 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,865 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,873 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,881 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,886 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,889 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,891 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 [2019-01-08 13:56:57,903 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,907 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,908 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,913 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,915 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,916 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:57,918 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 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 [2019-01-08 13:56:57,919 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:56:58,028 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:56:59,774 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:59,823 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:59,884 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:59,902 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:59,920 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:56:59,958 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,031 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,057 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,127 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,140 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,168 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,202 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,235 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,250 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,285 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,299 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,299 INFO L303 Elim1Store]: Index analysis took 565 ms [2019-01-08 13:57:00,300 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 [2019-01-08 13:57:00,332 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,334 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,338 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,341 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,343 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,345 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:00,347 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 [2019-01-08 13:57:00,348 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:00,686 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:01,048 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. [2019-01-08 13:57:01,049 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:317, output treesize:249 [2019-01-08 13:57:11,391 WARN L181 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 67 [2019-01-08 13:57:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:57:11,411 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 13:57:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-01-08 13:57:13,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-08 13:57:13,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 14 [2019-01-08 13:57:13,079 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-08 13:57:13,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-01-08 13:57:13,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-01-08 13:57:13,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=133, Unknown=4, NotChecked=0, Total=210 [2019-01-08 13:57:13,080 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 12 states. [2019-01-08 13:57:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 13:57:35,086 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-01-08 13:57:35,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-01-08 13:57:35,087 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 7 [2019-01-08 13:57:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 13:57:35,087 INFO L225 Difference]: With dead ends: 15 [2019-01-08 13:57:35,087 INFO L226 Difference]: Without dead ends: 12 [2019-01-08 13:57:35,088 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=73, Invalid=133, Unknown=4, NotChecked=0, Total=210 [2019-01-08 13:57:35,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-01-08 13:57:35,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-01-08 13:57:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-01-08 13:57:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-01-08 13:57:35,094 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2019-01-08 13:57:35,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 13:57:35,094 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-01-08 13:57:35,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-01-08 13:57:35,094 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-01-08 13:57:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-08 13:57:35,095 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 13:57:35,095 INFO L402 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2019-01-08 13:57:35,095 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-08 13:57:35,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:57:35,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 4 times [2019-01-08 13:57:35,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 13:57:35,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:57:35,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-08 13:57:35,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:57:35,097 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 13:57:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:57:35,868 WARN L181 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 10 [2019-01-08 13:57:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-01-08 13:57:36,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:57:36,169 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 13:57:36,169 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-01-08 13:57:36,169 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-01-08 13:57:36,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:57:36,169 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 [2019-01-08 13:57:36,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:57:36,179 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 13:57:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:57:38,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 13:57:38,323 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 [2019-01-08 13:57:38,328 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,331 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,332 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 [2019-01-08 13:57:38,332 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:38,343 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:38,352 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:38,353 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:16 [2019-01-08 13:57:38,402 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,403 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,404 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 [2019-01-08 13:57:38,408 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,410 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 [2019-01-08 13:57:38,411 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:38,432 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:38,436 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,438 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,439 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,441 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 [2019-01-08 13:57:38,445 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,446 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,447 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,448 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 [2019-01-08 13:57:38,449 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:38,474 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:38,508 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. [2019-01-08 13:57:38,509 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:47, output treesize:80 [2019-01-08 13:57:38,689 WARN L181 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-01-08 13:57:38,697 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,698 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,699 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,701 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 [2019-01-08 13:57:38,706 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,710 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,712 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,713 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 [2019-01-08 13:57:38,714 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:38,757 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:38,852 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,856 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,858 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,859 INFO L683 Elim1Store]: detected equality via solver [2019-01-08 13:57:38,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,868 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,870 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,871 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 [2019-01-08 13:57:38,896 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,898 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,900 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,903 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:38,905 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 [2019-01-08 13:57:38,906 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:38,964 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:39,016 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. [2019-01-08 13:57:39,017 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:157, output treesize:129 [2019-01-08 13:57:40,047 WARN L181 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-01-08 13:57:40,052 INFO L683 Elim1Store]: detected equality via solver [2019-01-08 13:57:40,056 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,060 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,066 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,071 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,082 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,092 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,104 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,112 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,113 INFO L683 Elim1Store]: detected equality via solver [2019-01-08 13:57:40,117 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,126 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,135 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,137 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,139 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 [2019-01-08 13:57:40,152 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,154 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,155 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,163 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,171 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,172 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 [2019-01-08 13:57:40,173 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:40,320 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:40,652 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,653 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,656 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,657 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,658 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,659 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,660 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 [2019-01-08 13:57:40,666 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,667 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,668 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,669 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,671 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:40,672 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 [2019-01-08 13:57:40,673 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:40,734 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:40,878 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. [2019-01-08 13:57:40,879 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:229, output treesize:173 [2019-01-08 13:57:42,056 WARN L181 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-01-08 13:57:44,447 WARN L181 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-01-08 13:57:44,459 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,463 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,465 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,469 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,470 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,473 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,474 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,475 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,476 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,477 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,479 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 [2019-01-08 13:57:44,489 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,491 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,496 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,499 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,500 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,503 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:44,504 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 [2019-01-08 13:57:44,505 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:44,612 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:46,875 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:46,884 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:46,894 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:46,923 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:46,999 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,047 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,073 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,081 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,098 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,122 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,130 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,143 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,146 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,276 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,292 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,295 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,296 INFO L303 Elim1Store]: Index analysis took 440 ms [2019-01-08 13:57:47,297 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 [2019-01-08 13:57:47,317 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,320 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,322 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,325 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,327 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,358 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:47,359 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 [2019-01-08 13:57:47,360 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:47,664 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:48,056 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. [2019-01-08 13:57:48,056 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:313, output treesize:235 [2019-01-08 13:57:55,237 WARN L181 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 64 [2019-01-08 13:58:00,289 WARN L181 SmtUtils]: Spent 5.05 s on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-01-08 13:58:00,308 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,317 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,327 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,338 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,344 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,355 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,363 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,370 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,375 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,383 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,412 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,437 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,450 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,450 INFO L303 Elim1Store]: Index analysis took 159 ms [2019-01-08 13:58:00,451 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 [2019-01-08 13:58:00,458 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,459 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,462 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,464 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,467 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,469 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,470 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:00,471 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 [2019-01-08 13:58:00,472 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:58:01,110 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:04,098 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,148 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,166 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,184 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,218 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,254 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,266 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,285 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,328 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,384 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,438 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,505 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,519 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,552 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,581 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,633 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,658 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,701 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,831 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,897 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,943 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:04,943 INFO L303 Elim1Store]: Index analysis took 916 ms [2019-01-08 13:58:04,944 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 [2019-01-08 13:58:05,328 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:05,922 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:05,926 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:05,933 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:05,943 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:05,946 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:05,954 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:05,954 INFO L303 Elim1Store]: Index analysis took 1006 ms [2019-01-08 13:58:05,955 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 [2019-01-08 13:58:05,957 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 13:58:06,674 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:07,770 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. [2019-01-08 13:58:07,771 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:423, output treesize:319 [2019-01-08 13:58:26,448 WARN L181 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 72 [2019-01-08 13:58:43,431 WARN L181 SmtUtils]: Spent 16.98 s on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-01-08 13:58:43,621 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:43,694 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:43,812 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:43,957 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:44,001 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:44,065 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:44,651 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:44,782 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:45,005 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:45,053 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:45,133 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:45,190 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:45,267 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:45,316 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:45,669 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:45,744 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:45,765 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:47,767 WARN L670 Elim1Store]: solver failed to check if following equality is implied: (= (mod (+ (mod (+ v_subst_4 1) 256) 1) 256) (mod v_subst_4 256)) [2019-01-08 13:58:47,768 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:47,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:47,904 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:47,949 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,064 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,120 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,229 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,301 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,396 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,496 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,588 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,589 INFO L303 Elim1Store]: Index analysis took 5156 ms [2019-01-08 13:58:48,590 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 [2019-01-08 13:58:48,671 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,679 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,681 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,685 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,687 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,692 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,694 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,696 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:48,696 INFO L303 Elim1Store]: Index analysis took 101 ms [2019-01-08 13:58:48,698 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 [2019-01-08 13:58:48,700 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 13:58:54,119 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:08,974 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:08,975 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:08,978 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:08,979 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:08,982 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:08,988 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,000 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,002 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,010 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,013 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,014 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,015 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,017 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,028 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,029 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,030 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,031 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,041 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,050 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,051 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,057 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,058 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 [2019-01-08 13:59:09,088 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,090 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,093 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,094 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,096 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,099 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,101 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:09,108 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 [2019-01-08 13:59:09,109 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 13:59:09,534 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:11,288 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. [2019-01-08 13:59:11,289 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:547, output treesize:445 [2019-01-08 13:59:33,844 WARN L181 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 81 [2019-01-08 13:59:50,613 WARN L181 SmtUtils]: Spent 16.76 s on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2019-01-08 13:59:50,768 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:50,812 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:50,902 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:50,971 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:51,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:51,211 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:51,514 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:51,580 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:51,624 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:52,115 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:52,241 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:52,397 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:52,470 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:52,627 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:52,820 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:52,875 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:52,972 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:53,636 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:53,732 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:53,822 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:54,178 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:54,311 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:54,358 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:54,404 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:54,592 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:54,718 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:54,790 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:54,886 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:54,919 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,039 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,177 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,260 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,262 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,388 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,503 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,505 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,577 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,578 INFO L303 Elim1Store]: Index analysis took 4963 ms [2019-01-08 13:59:55,579 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 [2019-01-08 13:59:55,681 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,683 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,702 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,712 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,717 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,743 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,749 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,751 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:55,752 INFO L303 Elim1Store]: Index analysis took 167 ms [2019-01-08 13:59:55,754 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 [2019-01-08 13:59:55,756 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 14:00:00,412 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:00:28,617 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,625 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,628 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,639 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,663 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,669 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,670 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,684 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,712 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,713 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,718 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,719 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,748 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,772 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,780 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,782 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,787 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,824 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,828 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,829 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,830 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,850 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,871 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,899 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,903 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,905 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,920 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:28,920 INFO L303 Elim1Store]: Index analysis took 327 ms [2019-01-08 14:00:28,921 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 [2019-01-08 14:00:28,984 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:29,006 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:29,029 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:29,053 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:29,062 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:29,063 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:29,067 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:29,069 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:29,072 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:00:29,072 INFO L303 Elim1Store]: Index analysis took 146 ms [2019-01-08 14:00:29,074 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 [2019-01-08 14:00:29,074 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 14:00:29,971 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:00:43,145 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. [2019-01-08 14:00:43,146 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:689, output treesize:557 [2019-01-08 14:01:11,345 WARN L181 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 89 [2019-01-08 14:01:44,854 WARN L181 SmtUtils]: Spent 33.50 s on a formula simplification. DAG size of input: 112 DAG size of output: 100 [2019-01-08 14:01:45,239 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:45,497 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:45,827 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:46,007 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:46,078 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:46,367 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:46,730 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:46,780 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:46,979 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:47,047 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:47,223 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:47,567 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:47,983 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:48,159 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:48,268 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:48,519 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:48,617 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:48,800 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:49,129 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:49,274 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:49,452 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:49,582 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:49,800 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:49,920 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:49,992 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:50,745 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:50,881 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:51,127 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:51,145 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:51,217 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:51,407 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:51,461 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:51,689 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:51,840 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:51,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:51,942 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:52,225 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:52,571 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:52,572 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:52,611 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:52,997 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,156 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,368 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,484 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,510 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,510 INFO L303 Elim1Store]: Index analysis took 8654 ms [2019-01-08 14:01:53,512 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 [2019-01-08 14:01:53,571 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,574 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,576 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,684 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,687 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,691 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,715 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,719 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,723 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,736 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:01:53,737 INFO L303 Elim1Store]: Index analysis took 216 ms [2019-01-08 14:01:53,739 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 [2019-01-08 14:01:53,741 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 14:02:08,001 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:02:54,226 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,227 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,229 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,248 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,249 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,251 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,252 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,253 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,256 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,259 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,273 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,306 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,313 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,315 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,316 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,318 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,319 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,321 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,345 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,346 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,347 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,349 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,350 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,352 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,375 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,383 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,398 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,421 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,428 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,433 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,451 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,475 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,555 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,558 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,573 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,574 INFO L303 Elim1Store]: Index analysis took 370 ms [2019-01-08 14:02:54,575 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 [2019-01-08 14:02:54,607 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,609 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,616 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,617 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,618 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,622 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,626 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,629 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,631 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,637 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:02:54,639 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 [2019-01-08 14:02:54,640 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-01-08 14:02:56,147 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:03:05,716 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. [2019-01-08 14:03:05,717 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:841, output treesize:653 [2019-01-08 14:03:45,840 WARN L181 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 96 [2019-01-08 14:03:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 16 refuted. 20 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:03:45,870 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 14:03:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-01-08 14:03:50,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-08 14:03:50,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 4] total 19 [2019-01-08 14:03:50,908 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-08 14:03:50,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-01-08 14:03:50,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-01-08 14:03:50,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=211, Unknown=47, NotChecked=0, Total=380 [2019-01-08 14:03:50,910 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 16 states. [2019-01-08 14:05:27,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 14:05:27,717 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-01-08 14:05:27,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-01-08 14:05:27,729 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 11 [2019-01-08 14:05:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 14:05:27,730 INFO L225 Difference]: With dead ends: 13 [2019-01-08 14:05:27,730 INFO L226 Difference]: Without dead ends: 0 [2019-01-08 14:05:27,730 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 11 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 123.8s TimeCoverageRelationStatistics Valid=122, Invalid=211, Unknown=47, NotChecked=0, Total=380 [2019-01-08 14:05:27,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-08 14:05:27,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-08 14:05:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-08 14:05:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-08 14:05:27,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-01-08 14:05:27,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 14:05:27,731 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-08 14:05:27,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-01-08 14:05:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-08 14:05:27,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-08 14:05:27,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-08 14:05:46,748 WARN L181 SmtUtils]: Spent 18.98 s on a formula simplification. DAG size of input: 374 DAG size of output: 35 [2019-01-08 14:05:46,750 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 9 30) no Hoare annotation was computed. [2019-01-08 14:05:46,750 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 28) no Hoare annotation was computed. [2019-01-08 14:05:46,750 INFO L448 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2019-01-08 14:05:46,751 INFO L448 ceAbstractionStarter]: For program point L27-1(lines 9 30) no Hoare annotation was computed. [2019-01-08 14:05:46,751 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 9 30) no Hoare annotation was computed. [2019-01-08 14:05:46,751 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)))))) [2019-01-08 14:05:46,762 INFO L202 PluginConnector]: Adding new model SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.01 02:05:46 BoogieIcfgContainer [2019-01-08 14:05:46,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-08 14:05:46,763 INFO L168 Benchmark]: Toolchain (without parser) took 561723.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.7 MB). Free memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: -610.4 MB). Peak memory consumption was 192.2 MB. Max. memory is 7.1 GB. [2019-01-08 14:05:46,764 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-08 14:05:46,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.99 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-08 14:05:46,765 INFO L168 Benchmark]: Boogie Preprocessor took 23.52 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-08 14:05:46,765 INFO L168 Benchmark]: RCFGBuilder took 297.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-01-08 14:05:46,765 INFO L168 Benchmark]: TraceAbstraction took 561359.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.7 MB). Free memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: -631.6 MB). Peak memory consumption was 171.1 MB. Max. memory is 7.1 GB. [2019-01-08 14:05:46,767 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.99 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.52 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 297.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 561359.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.7 MB). Free memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: -631.6 MB). Peak memory consumption was 171.1 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, 561.2s OverallTime, 5 OverallIterations, 8 TraceHistogramMax, 132.9s AutomataDifference, 0.0s DeadEndRemovalTime, 19.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 3 SDslu, 3 SDs, 0 SdLazy, 84 SolverSat, 9 SolverUnsat, 63 SolverUnknown, 0 SolverNotchecked, 131.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 8 SyntacticMatches, 15 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 141.5s 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, 0.1s 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, 18.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 406.2s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 71 ConstructedInterpolants, 18 QuantifiedInterpolants, 58064 SizeOfPredicates, 38 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 32/150 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...