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_camel.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-6-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1ae3202 [2019-03-04 16:24:20,207 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-03-04 16:24:20,208 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-03-04 16:24:20,224 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-03-04 16:24:20,284 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_camel.epf [2019-03-04 16:24:20,303 INFO L110 SettingsManager]: Loading preferences was successful [2019-03-04 16:24:20,303 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-03-04 16:24:20,304 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-03-04 16:24:20,304 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-03-04 16:24:20,305 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-03-04 16:24:20,305 INFO L133 SettingsManager]: * User list type=DISABLED [2019-03-04 16:24:20,305 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-03-04 16:24:20,305 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-03-04 16:24:20,305 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-03-04 16:24:20,306 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-03-04 16:24:20,306 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2019-03-04 16:24:20,306 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-03-04 16:24:20,306 INFO L133 SettingsManager]: * Interval Domain=false [2019-03-04 16:24:20,307 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-03-04 16:24:20,307 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-03-04 16:24:20,307 INFO L133 SettingsManager]: * Use SBE=true [2019-03-04 16:24:20,307 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-03-04 16:24:20,308 INFO L133 SettingsManager]: * sizeof long=4 [2019-03-04 16:24:20,308 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-03-04 16:24:20,308 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-03-04 16:24:20,308 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-03-04 16:24:20,308 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-03-04 16:24:20,309 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-03-04 16:24:20,309 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-03-04 16:24:20,309 INFO L133 SettingsManager]: * sizeof long double=12 [2019-03-04 16:24:20,309 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-03-04 16:24:20,309 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-03-04 16:24:20,310 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-03-04 16:24:20,310 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-03-04 16:24:20,310 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-03-04 16:24:20,310 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-03-04 16:24:20,310 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-03-04 16:24:20,311 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-03-04 16:24:20,311 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-03-04 16:24:20,311 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-03-04 16:24:20,311 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-03-04 16:24:20,311 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-03-04 16:24:20,312 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-03-04 16:24:20,312 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-03-04 16:24:20,373 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-03-04 16:24:20,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-03-04 16:24:20,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-03-04 16:24:20,401 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-03-04 16:24:20,402 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-03-04 16:24:20,403 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-6-limited.bpl [2019-03-04 16:24:20,403 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-6-limited.bpl' [2019-03-04 16:24:20,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-03-04 16:24:20,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-03-04 16:24:20,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-03-04 16:24:20,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-03-04 16:24:20,458 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-03-04 16:24:20,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:24:20" (1/1) ... [2019-03-04 16:24:20,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:24:20" (1/1) ... [2019-03-04 16:24:20,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-03-04 16:24:20,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-03-04 16:24:20,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-03-04 16:24:20,512 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-03-04 16:24:20,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:24:20" (1/1) ... [2019-03-04 16:24:20,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:24:20" (1/1) ... [2019-03-04 16:24:20,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:24:20" (1/1) ... [2019-03-04 16:24:20,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:24:20" (1/1) ... [2019-03-04 16:24:20,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:24:20" (1/1) ... [2019-03-04 16:24:20,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:24:20" (1/1) ... [2019-03-04 16:24:20,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:24:20" (1/1) ... [2019-03-04 16:24:20,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-03-04 16:24:20,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-03-04 16:24:20,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-03-04 16:24:20,537 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-03-04 16:24:20,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:24:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-03-04 16:24:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-03-04 16:24:20,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-03-04 16:24:20,922 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-03-04 16:24:20,923 INFO L286 CfgBuilder]: Removed 15 assue(true) statements. [2019-03-04 16:24:20,924 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:24:20 BoogieIcfgContainer [2019-03-04 16:24:20,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-03-04 16:24:20,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-03-04 16:24:20,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-03-04 16:24:20,929 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-03-04 16:24:20,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:24:20" (1/2) ... [2019-03-04 16:24:20,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281511d8 and model type speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:24:20, skipping insertion in model container [2019-03-04 16:24:20,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-6-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:24:20" (2/2) ... [2019-03-04 16:24:20,933 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-6-limited.bpl [2019-03-04 16:24:20,944 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-03-04 16:24:20,953 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-03-04 16:24:20,972 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-03-04 16:24:21,014 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-03-04 16:24:21,015 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-03-04 16:24:21,015 INFO L383 AbstractCegarLoop]: Hoare is true [2019-03-04 16:24:21,016 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-03-04 16:24:21,016 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-03-04 16:24:21,016 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-03-04 16:24:21,016 INFO L387 AbstractCegarLoop]: Difference is false [2019-03-04 16:24:21,016 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-03-04 16:24:21,017 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-03-04 16:24:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-03-04 16:24:21,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-03-04 16:24:21,036 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:24:21,037 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-03-04 16:24:21,040 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:24:21,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:24:21,045 INFO L82 PathProgramCache]: Analyzing trace with hash 988, now seen corresponding path program 1 times [2019-03-04 16:24:21,047 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:24:21,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:24:21,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:21,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:21,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:21,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-03-04 16:24:21,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-03-04 16:24:21,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-03-04 16:24:21,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-03-04 16:24:21,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-03-04 16:24:21,237 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-03-04 16:24:21,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:24:21,509 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2019-03-04 16:24:21,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-03-04 16:24:21,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-03-04 16:24:21,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:24:21,524 INFO L225 Difference]: With dead ends: 29 [2019-03-04 16:24:21,525 INFO L226 Difference]: Without dead ends: 24 [2019-03-04 16:24:21,528 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-03-04 16:24:21,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-03-04 16:24:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2019-03-04 16:24:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-03-04 16:24:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 25 transitions. [2019-03-04 16:24:21,563 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 25 transitions. Word has length 2 [2019-03-04 16:24:21,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:24:21,565 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 25 transitions. [2019-03-04 16:24:21,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-03-04 16:24:21,565 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 25 transitions. [2019-03-04 16:24:21,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:24:21,566 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:24:21,566 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:24:21,567 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:24:21,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:24:21,567 INFO L82 PathProgramCache]: Analyzing trace with hash 30376, now seen corresponding path program 1 times [2019-03-04 16:24:21,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:24:21,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:24:21,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:21,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:21,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:21,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:21,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:24:21,708 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-03-04 16:24:21,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:21,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 10 conjunts are in the unsatisfiable core [2019-03-04 16:24:21,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:24:21,833 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:21,870 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:24:21,871 INFO L309 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:21,885 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:22,003 INFO L453 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 21 treesize of output 24 [2019-03-04 16:24:22,014 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,016 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:24:22,046 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,072 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,095 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,098 INFO L453 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 26 treesize of output 28 [2019-03-04 16:24:22,156 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,161 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,163 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,166 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,168 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,189 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,191 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-03-04 16:24:22,203 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,204 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,207 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,212 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,234 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,245 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,247 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,249 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,272 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,284 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,286 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-03-04 16:24:22,332 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,353 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,383 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,405 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,408 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,410 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,412 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,414 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,416 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,418 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,420 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,422 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,423 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,424 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,425 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,425 INFO L301 Elim1Store]: Index analysis took 106 ms [2019-03-04 16:24:22,431 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2019-03-04 16:24:22,432 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:22,499 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:22,556 INFO L309 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:22,658 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:22,689 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:22,717 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:22,784 INFO L309 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:22,785 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 6 variables, input treesize:45, output treesize:46 [2019-03-04 16:24:22,842 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,844 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,846 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,848 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,851 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,853 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,855 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,857 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,859 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,862 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,864 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,866 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,868 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,870 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,872 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:22,875 INFO L453 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 41 treesize of output 36 [2019-03-04 16:24:22,876 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:22,924 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:22,925 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:56, output treesize:48 [2019-03-04 16:24:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:23,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:24:23,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2019-03-04 16:24:23,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-03-04 16:24:23,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-03-04 16:24:23,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-03-04 16:24:23,057 INFO L87 Difference]: Start difference. First operand 14 states and 25 transitions. Second operand 6 states. [2019-03-04 16:24:23,455 WARN L181 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2019-03-04 16:24:24,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:24:24,931 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2019-03-04 16:24:24,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-03-04 16:24:24,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-03-04 16:24:24,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:24:24,933 INFO L225 Difference]: With dead ends: 47 [2019-03-04 16:24:24,933 INFO L226 Difference]: Without dead ends: 45 [2019-03-04 16:24:24,935 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-03-04 16:24:24,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-03-04 16:24:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 18. [2019-03-04 16:24:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-03-04 16:24:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 37 transitions. [2019-03-04 16:24:24,941 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 37 transitions. Word has length 3 [2019-03-04 16:24:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:24:24,942 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 37 transitions. [2019-03-04 16:24:24,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-03-04 16:24:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 37 transitions. [2019-03-04 16:24:24,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:24:24,943 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:24:24,943 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:24:24,943 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:24:24,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:24:24,944 INFO L82 PathProgramCache]: Analyzing trace with hash 30004, now seen corresponding path program 1 times [2019-03-04 16:24:24,944 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:24:24,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:24:24,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:24,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:24,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:24,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:24:24,998 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-03-04 16:24:25,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:25,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 10 conjunts are in the unsatisfiable core [2019-03-04 16:24:25,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:24:25,041 INFO L453 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 21 treesize of output 24 [2019-03-04 16:24:25,050 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,051 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:24:25,066 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,068 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,070 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,073 INFO L453 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 26 treesize of output 28 [2019-03-04 16:24:25,087 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,089 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,091 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,093 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,095 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,099 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,100 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-03-04 16:24:25,114 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,118 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,120 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,122 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,124 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,126 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,128 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,130 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,132 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,134 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,141 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-03-04 16:24:25,171 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,174 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,176 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,177 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,179 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,180 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,182 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,183 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,185 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,186 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,188 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,189 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,190 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,192 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,193 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,196 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2019-03-04 16:24:25,196 INFO L309 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:25,214 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:25,231 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:25,262 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:25,285 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:25,300 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:25,341 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,350 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:24:25,350 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:25,353 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:25,393 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:25,393 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 7 variables, input treesize:45, output treesize:46 [2019-03-04 16:24:25,430 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,431 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,432 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,432 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,433 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,434 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,436 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,446 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,448 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,469 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,470 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,472 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,473 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,474 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,478 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:25,481 INFO L453 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 41 treesize of output 36 [2019-03-04 16:24:25,483 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:25,566 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:25,566 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:56, output treesize:46 [2019-03-04 16:24:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:25,610 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:24:25,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2019-03-04 16:24:25,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-03-04 16:24:25,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-03-04 16:24:25,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-03-04 16:24:25,611 INFO L87 Difference]: Start difference. First operand 18 states and 37 transitions. Second operand 6 states. [2019-03-04 16:24:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:24:25,903 INFO L93 Difference]: Finished difference Result 37 states and 65 transitions. [2019-03-04 16:24:25,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-03-04 16:24:25,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-03-04 16:24:25,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:24:25,910 INFO L225 Difference]: With dead ends: 37 [2019-03-04 16:24:25,910 INFO L226 Difference]: Without dead ends: 36 [2019-03-04 16:24:25,911 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-03-04 16:24:25,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-03-04 16:24:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-03-04 16:24:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-03-04 16:24:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 51 transitions. [2019-03-04 16:24:25,916 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 51 transitions. Word has length 3 [2019-03-04 16:24:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:24:25,916 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 51 transitions. [2019-03-04 16:24:25,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-03-04 16:24:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 51 transitions. [2019-03-04 16:24:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:24:25,917 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:24:25,917 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:24:25,918 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:24:25,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:24:25,918 INFO L82 PathProgramCache]: Analyzing trace with hash 30562, now seen corresponding path program 1 times [2019-03-04 16:24:25,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:24:25,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:24:25,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:25,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:25,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:26,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:24:26,011 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-03-04 16:24:26,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:26,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 10 conjunts are in the unsatisfiable core [2019-03-04 16:24:26,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:24:26,058 INFO L453 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 21 treesize of output 24 [2019-03-04 16:24:26,062 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,064 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:24:26,114 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,116 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,117 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,118 INFO L453 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 26 treesize of output 28 [2019-03-04 16:24:26,140 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,142 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,144 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,146 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,147 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,147 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,149 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-03-04 16:24:26,170 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,172 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,174 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,176 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,178 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,180 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,182 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,183 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,183 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,184 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,186 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-03-04 16:24:26,190 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,192 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,195 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,196 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,197 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,198 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,199 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,200 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,201 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,202 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,204 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,205 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,206 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,207 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,209 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,210 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2019-03-04 16:24:26,211 INFO L309 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:26,246 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:26,260 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:26,274 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:26,291 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:26,305 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:26,343 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,348 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:24:26,349 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:26,351 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:26,373 INFO L309 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:26,374 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 6 variables, input treesize:45, output treesize:46 [2019-03-04 16:24:26,403 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,404 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,405 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,406 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,407 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,408 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,409 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,411 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,412 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,413 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,414 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,415 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,417 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,418 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,420 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:26,422 INFO L453 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 41 treesize of output 36 [2019-03-04 16:24:26,423 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:26,452 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:26,452 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:56, output treesize:48 [2019-03-04 16:24:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:26,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:24:26,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2019-03-04 16:24:26,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-03-04 16:24:26,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-03-04 16:24:26,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-03-04 16:24:26,565 INFO L87 Difference]: Start difference. First operand 20 states and 51 transitions. Second operand 6 states. [2019-03-04 16:24:28,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:24:28,340 INFO L93 Difference]: Finished difference Result 49 states and 88 transitions. [2019-03-04 16:24:28,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-03-04 16:24:28,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-03-04 16:24:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:24:28,355 INFO L225 Difference]: With dead ends: 49 [2019-03-04 16:24:28,356 INFO L226 Difference]: Without dead ends: 46 [2019-03-04 16:24:28,356 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-03-04 16:24:28,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-03-04 16:24:28,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 22. [2019-03-04 16:24:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-03-04 16:24:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 59 transitions. [2019-03-04 16:24:28,363 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 59 transitions. Word has length 3 [2019-03-04 16:24:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:24:28,363 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 59 transitions. [2019-03-04 16:24:28,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-03-04 16:24:28,365 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 59 transitions. [2019-03-04 16:24:28,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:24:28,365 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:24:28,365 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:24:28,366 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:24:28,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:24:28,366 INFO L82 PathProgramCache]: Analyzing trace with hash 30128, now seen corresponding path program 1 times [2019-03-04 16:24:28,366 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:24:28,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:24:28,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:28,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:28,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:28,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:24:28,490 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-03-04 16:24:28,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:28,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 10 conjunts are in the unsatisfiable core [2019-03-04 16:24:28,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:24:28,511 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,515 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:24:28,515 INFO L309 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:28,518 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:28,543 INFO L453 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 21 treesize of output 24 [2019-03-04 16:24:28,548 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,549 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:24:28,554 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,556 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,558 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,559 INFO L453 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 26 treesize of output 28 [2019-03-04 16:24:28,569 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,572 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,575 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,578 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,581 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,583 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,584 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-03-04 16:24:28,632 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,634 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,637 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,640 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,641 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,641 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,643 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,644 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,644 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,645 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,647 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-03-04 16:24:28,653 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,655 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,656 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,657 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,658 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,660 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,661 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,662 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,663 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,664 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,666 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,667 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,668 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,669 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,670 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,675 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2019-03-04 16:24:28,676 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:28,698 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:28,710 INFO L309 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:28,723 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:28,735 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:28,748 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:28,771 INFO L309 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:28,771 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 6 variables, input treesize:45, output treesize:46 [2019-03-04 16:24:28,797 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,799 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,799 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,800 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,801 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,802 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,803 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,805 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,806 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,807 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,808 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,812 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,813 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,814 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,815 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:28,816 INFO L453 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 41 treesize of output 36 [2019-03-04 16:24:28,817 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:28,842 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:28,842 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:56, output treesize:48 [2019-03-04 16:24:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:28,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:24:28,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2019-03-04 16:24:28,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-03-04 16:24:28,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-03-04 16:24:28,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-03-04 16:24:28,949 INFO L87 Difference]: Start difference. First operand 22 states and 59 transitions. Second operand 6 states. [2019-03-04 16:24:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:24:30,213 INFO L93 Difference]: Finished difference Result 48 states and 93 transitions. [2019-03-04 16:24:30,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-03-04 16:24:30,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-03-04 16:24:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:24:30,215 INFO L225 Difference]: With dead ends: 48 [2019-03-04 16:24:30,215 INFO L226 Difference]: Without dead ends: 46 [2019-03-04 16:24:30,216 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-03-04 16:24:30,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-03-04 16:24:30,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 23. [2019-03-04 16:24:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-03-04 16:24:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 65 transitions. [2019-03-04 16:24:30,223 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 65 transitions. Word has length 3 [2019-03-04 16:24:30,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:24:30,223 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 65 transitions. [2019-03-04 16:24:30,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-03-04 16:24:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 65 transitions. [2019-03-04 16:24:30,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-03-04 16:24:30,224 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:24:30,224 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-03-04 16:24:30,225 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:24:30,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:24:30,225 INFO L82 PathProgramCache]: Analyzing trace with hash 941032, now seen corresponding path program 1 times [2019-03-04 16:24:30,225 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:24:30,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:24:30,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:30,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:30,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:30,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:30,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:24:30,344 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:24:30,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:30,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2019-03-04 16:24:30,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:24:30,365 INFO L453 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 21 treesize of output 24 [2019-03-04 16:24:30,370 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,372 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:24:30,377 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,378 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,380 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,381 INFO L453 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 26 treesize of output 28 [2019-03-04 16:24:30,394 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,394 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,395 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,397 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,398 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,399 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,401 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-03-04 16:24:30,412 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,414 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,417 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,418 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,418 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,419 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,420 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,421 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,422 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,423 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,427 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-03-04 16:24:30,447 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,450 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,451 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,452 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,453 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,454 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,455 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,456 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,457 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,459 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,460 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,463 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,465 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,467 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,468 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,469 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2019-03-04 16:24:30,470 INFO L309 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:30,485 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:30,500 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:30,513 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:30,527 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:30,540 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:30,646 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,676 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:24:30,676 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:30,691 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:30,899 INFO L309 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:30,899 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 6 variables, input treesize:45, output treesize:46 [2019-03-04 16:24:30,931 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,932 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,934 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,935 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,936 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,938 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,939 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,940 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,941 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,942 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,944 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,945 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,946 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,947 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,948 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:30,950 INFO L453 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 41 treesize of output 36 [2019-03-04 16:24:30,951 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:30,973 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:30,973 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:56, output treesize:48 [2019-03-04 16:24:31,097 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,098 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,099 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,100 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,101 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,102 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,104 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,105 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,107 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,108 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,109 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,111 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,112 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,113 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,115 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:31,117 INFO L453 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 43 treesize of output 38 [2019-03-04 16:24:31,118 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:31,172 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:31,172 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:58, output treesize:48 [2019-03-04 16:24:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:31,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:24:31,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-03-04 16:24:31,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-03-04 16:24:31,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-03-04 16:24:31,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-03-04 16:24:31,209 INFO L87 Difference]: Start difference. First operand 23 states and 65 transitions. Second operand 8 states. [2019-03-04 16:24:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:24:32,733 INFO L93 Difference]: Finished difference Result 70 states and 131 transitions. [2019-03-04 16:24:32,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-03-04 16:24:32,733 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 4 [2019-03-04 16:24:32,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:24:32,735 INFO L225 Difference]: With dead ends: 70 [2019-03-04 16:24:32,735 INFO L226 Difference]: Without dead ends: 69 [2019-03-04 16:24:32,736 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-03-04 16:24:32,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-03-04 16:24:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 23. [2019-03-04 16:24:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-03-04 16:24:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 65 transitions. [2019-03-04 16:24:32,743 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 65 transitions. Word has length 4 [2019-03-04 16:24:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:24:32,743 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 65 transitions. [2019-03-04 16:24:32,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-03-04 16:24:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 65 transitions. [2019-03-04 16:24:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-03-04 16:24:32,744 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:24:32,744 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-03-04 16:24:32,744 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:24:32,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:24:32,745 INFO L82 PathProgramCache]: Analyzing trace with hash 941528, now seen corresponding path program 1 times [2019-03-04 16:24:32,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:24:32,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:24:32,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:32,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:32,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:32,865 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:24:32,865 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:24:32,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:32,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2019-03-04 16:24:32,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:24:32,887 INFO L453 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 21 treesize of output 24 [2019-03-04 16:24:32,893 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,894 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:24:32,899 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,900 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,901 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,902 INFO L453 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 26 treesize of output 28 [2019-03-04 16:24:32,911 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,913 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,915 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,918 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,918 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,919 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,920 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-03-04 16:24:32,925 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,930 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,934 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,949 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,955 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,957 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,960 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,962 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,964 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,966 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,967 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-03-04 16:24:32,975 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,979 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,981 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,983 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,985 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,987 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,989 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,991 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,993 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,995 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:32,997 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,000 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,002 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,004 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,006 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,007 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2019-03-04 16:24:33,007 INFO L309 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:33,026 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:33,061 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:33,082 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:33,100 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:33,119 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:33,194 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,201 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:24:33,202 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:33,203 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:33,235 INFO L309 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:33,236 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:45, output treesize:46 [2019-03-04 16:24:33,314 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,314 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,315 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,316 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,343 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,353 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,354 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,354 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,355 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,356 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,357 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,358 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,359 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,360 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,361 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,362 INFO L453 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 41 treesize of output 36 [2019-03-04 16:24:33,363 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:33,389 INFO L309 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:33,389 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:48 [2019-03-04 16:24:33,418 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,419 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,421 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,422 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,423 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,424 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,426 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,427 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,428 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,429 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,430 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,431 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,432 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,433 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,435 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:33,437 INFO L453 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 43 treesize of output 38 [2019-03-04 16:24:33,438 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:33,460 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:33,460 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:58, output treesize:48 [2019-03-04 16:24:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:33,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:24:33,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-03-04 16:24:33,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-03-04 16:24:33,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-03-04 16:24:33,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-03-04 16:24:33,633 INFO L87 Difference]: Start difference. First operand 23 states and 65 transitions. Second operand 8 states. [2019-03-04 16:24:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:24:36,009 INFO L93 Difference]: Finished difference Result 59 states and 122 transitions. [2019-03-04 16:24:36,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-03-04 16:24:36,009 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 4 [2019-03-04 16:24:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:24:36,011 INFO L225 Difference]: With dead ends: 59 [2019-03-04 16:24:36,011 INFO L226 Difference]: Without dead ends: 55 [2019-03-04 16:24:36,012 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-03-04 16:24:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-03-04 16:24:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28. [2019-03-04 16:24:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-03-04 16:24:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 90 transitions. [2019-03-04 16:24:36,021 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 90 transitions. Word has length 4 [2019-03-04 16:24:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:24:36,022 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 90 transitions. [2019-03-04 16:24:36,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-03-04 16:24:36,022 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 90 transitions. [2019-03-04 16:24:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-03-04 16:24:36,023 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:24:36,023 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-03-04 16:24:36,023 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:24:36,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:24:36,024 INFO L82 PathProgramCache]: Analyzing trace with hash 941590, now seen corresponding path program 1 times [2019-03-04 16:24:36,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:24:36,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:24:36,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:36,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:36,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:36,187 WARN L181 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 17 [2019-03-04 16:24:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:36,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:24:36,245 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:24:36,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:36,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2019-03-04 16:24:36,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:24:36,291 INFO L453 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 21 treesize of output 24 [2019-03-04 16:24:36,294 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,295 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:24:36,300 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,301 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,301 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,302 INFO L453 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 26 treesize of output 28 [2019-03-04 16:24:36,306 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,307 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,308 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,310 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,311 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,312 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,313 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-03-04 16:24:36,345 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,348 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,349 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,350 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,351 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,352 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,353 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,354 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,355 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,356 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,360 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-03-04 16:24:36,366 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,368 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,368 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,369 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,370 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,371 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,373 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,374 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,375 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,376 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,378 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,379 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,380 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,381 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,382 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,384 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2019-03-04 16:24:36,385 INFO L309 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:36,395 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:36,409 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:36,422 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:36,435 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:36,448 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:36,476 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,481 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:24:36,482 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:36,485 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:36,506 INFO L309 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:36,507 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:45, output treesize:46 [2019-03-04 16:24:36,530 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,531 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,532 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,532 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,533 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,534 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,536 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,537 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,538 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,539 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,540 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,541 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,543 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,544 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,545 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,546 INFO L453 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 41 treesize of output 36 [2019-03-04 16:24:36,547 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:36,568 INFO L309 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:36,569 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:48 [2019-03-04 16:24:36,606 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,607 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,607 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,608 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,609 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,610 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,611 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,612 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,614 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,615 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,616 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,617 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,618 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,619 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,620 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:36,622 INFO L453 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 43 treesize of output 38 [2019-03-04 16:24:36,622 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:36,645 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:36,646 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:58, output treesize:50 [2019-03-04 16:24:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:36,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:24:36,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-03-04 16:24:36,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-03-04 16:24:36,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-03-04 16:24:36,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-03-04 16:24:36,823 INFO L87 Difference]: Start difference. First operand 28 states and 90 transitions. Second operand 8 states. [2019-03-04 16:24:39,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:24:39,718 INFO L93 Difference]: Finished difference Result 57 states and 125 transitions. [2019-03-04 16:24:39,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-03-04 16:24:39,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 4 [2019-03-04 16:24:39,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:24:39,720 INFO L225 Difference]: With dead ends: 57 [2019-03-04 16:24:39,720 INFO L226 Difference]: Without dead ends: 53 [2019-03-04 16:24:39,720 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-03-04 16:24:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-03-04 16:24:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 27. [2019-03-04 16:24:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-03-04 16:24:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 88 transitions. [2019-03-04 16:24:39,728 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 88 transitions. Word has length 4 [2019-03-04 16:24:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:24:39,730 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 88 transitions. [2019-03-04 16:24:39,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-03-04 16:24:39,730 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 88 transitions. [2019-03-04 16:24:39,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-03-04 16:24:39,730 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:24:39,731 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-03-04 16:24:39,731 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:24:39,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:24:39,731 INFO L82 PathProgramCache]: Analyzing trace with hash 941156, now seen corresponding path program 1 times [2019-03-04 16:24:39,731 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:24:39,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:24:39,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:39,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:39,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:39,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:24:39,831 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:24:39,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:39,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2019-03-04 16:24:39,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:24:39,856 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,861 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:24:39,862 INFO L309 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:39,866 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:39,883 INFO L453 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 21 treesize of output 24 [2019-03-04 16:24:39,886 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,887 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:24:39,892 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,893 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,894 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,895 INFO L453 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 26 treesize of output 28 [2019-03-04 16:24:39,907 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,910 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,913 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,914 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,914 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,915 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,916 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-03-04 16:24:39,920 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,920 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,921 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,922 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,931 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,932 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,932 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,933 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,934 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,935 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,937 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-03-04 16:24:39,948 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,950 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,952 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,954 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,955 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,955 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,956 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,957 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,958 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,959 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,960 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,962 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,963 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,964 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,965 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:39,967 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2019-03-04 16:24:39,968 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:40,054 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:40,065 INFO L309 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:40,077 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:40,090 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:40,101 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:40,126 INFO L309 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:40,126 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:45, output treesize:46 [2019-03-04 16:24:40,152 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,153 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,154 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,154 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,155 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,156 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,157 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,158 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,159 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,166 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,167 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,167 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,168 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,169 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,169 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,170 INFO L453 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 41 treesize of output 36 [2019-03-04 16:24:40,171 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:40,195 INFO L309 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:40,195 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:48 [2019-03-04 16:24:40,239 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,240 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,241 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,242 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,244 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,245 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,246 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,248 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,249 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,250 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,252 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,253 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,254 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,256 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,257 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:40,259 INFO L453 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 43 treesize of output 38 [2019-03-04 16:24:40,260 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:40,309 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:40,309 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:58, output treesize:50 [2019-03-04 16:24:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:40,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:24:40,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-03-04 16:24:40,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-03-04 16:24:40,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-03-04 16:24:40,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-03-04 16:24:40,483 INFO L87 Difference]: Start difference. First operand 27 states and 88 transitions. Second operand 8 states. [2019-03-04 16:24:42,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:24:42,488 INFO L93 Difference]: Finished difference Result 54 states and 122 transitions. [2019-03-04 16:24:42,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-03-04 16:24:42,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 4 [2019-03-04 16:24:42,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:24:42,489 INFO L225 Difference]: With dead ends: 54 [2019-03-04 16:24:42,489 INFO L226 Difference]: Without dead ends: 52 [2019-03-04 16:24:42,489 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-03-04 16:24:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-03-04 16:24:42,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 27. [2019-03-04 16:24:42,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-03-04 16:24:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 87 transitions. [2019-03-04 16:24:42,497 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 87 transitions. Word has length 4 [2019-03-04 16:24:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:24:42,497 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 87 transitions. [2019-03-04 16:24:42,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-03-04 16:24:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 87 transitions. [2019-03-04 16:24:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-03-04 16:24:42,498 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:24:42,498 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-03-04 16:24:42,499 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:24:42,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:24:42,499 INFO L82 PathProgramCache]: Analyzing trace with hash 941280, now seen corresponding path program 1 times [2019-03-04 16:24:42,499 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:24:42,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:24:42,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:42,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:42,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:42,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:24:42,593 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:24:42,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:42,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2019-03-04 16:24:42,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:24:42,622 INFO L453 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 21 treesize of output 24 [2019-03-04 16:24:42,630 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,631 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:24:42,643 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,647 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,649 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,650 INFO L453 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 26 treesize of output 28 [2019-03-04 16:24:42,654 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,656 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,658 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,660 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,662 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,664 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,665 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-03-04 16:24:42,672 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,674 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,677 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,677 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,678 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,679 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,680 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,680 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,681 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,682 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,683 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-03-04 16:24:42,690 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,691 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,692 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,693 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,693 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,695 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,696 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,697 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,698 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,699 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,700 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,702 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,703 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,704 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,705 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,706 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2019-03-04 16:24:42,707 INFO L309 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:42,720 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:42,734 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:42,747 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:42,759 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:42,772 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:42,800 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,804 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:24:42,805 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:42,808 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:42,831 INFO L309 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:42,831 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:45, output treesize:46 [2019-03-04 16:24:42,858 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,859 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,860 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,861 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,862 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,864 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,865 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,866 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,867 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,868 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,869 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,871 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,872 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,873 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,874 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,875 INFO L453 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 41 treesize of output 36 [2019-03-04 16:24:42,876 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:42,900 INFO L309 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:42,901 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:48 [2019-03-04 16:24:42,924 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,925 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,926 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,927 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,928 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,930 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,931 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,932 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,933 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,934 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,935 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,937 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,938 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,939 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,940 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:42,941 INFO L453 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 43 treesize of output 38 [2019-03-04 16:24:42,942 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:42,964 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:42,964 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:58, output treesize:48 [2019-03-04 16:24:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:43,130 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:24:43,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-03-04 16:24:43,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-03-04 16:24:43,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-03-04 16:24:43,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-03-04 16:24:43,131 INFO L87 Difference]: Start difference. First operand 27 states and 87 transitions. Second operand 8 states. [2019-03-04 16:24:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:24:44,597 INFO L93 Difference]: Finished difference Result 53 states and 128 transitions. [2019-03-04 16:24:44,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-03-04 16:24:44,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 4 [2019-03-04 16:24:44,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:24:44,599 INFO L225 Difference]: With dead ends: 53 [2019-03-04 16:24:44,599 INFO L226 Difference]: Without dead ends: 49 [2019-03-04 16:24:44,599 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-03-04 16:24:44,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-03-04 16:24:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2019-03-04 16:24:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-03-04 16:24:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 97 transitions. [2019-03-04 16:24:44,607 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 97 transitions. Word has length 4 [2019-03-04 16:24:44,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:24:44,607 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 97 transitions. [2019-03-04 16:24:44,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-03-04 16:24:44,607 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 97 transitions. [2019-03-04 16:24:44,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-03-04 16:24:44,608 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:24:44,608 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-03-04 16:24:44,608 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:24:44,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:24:44,608 INFO L82 PathProgramCache]: Analyzing trace with hash 930184, now seen corresponding path program 1 times [2019-03-04 16:24:44,608 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:24:44,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:24:44,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:44,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:44,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:24:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:44,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:24:44,769 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:24:44,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:24:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:24:44,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 9 conjunts are in the unsatisfiable core [2019-03-04 16:24:44,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:24:44,801 INFO L453 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 21 treesize of output 24 [2019-03-04 16:24:44,812 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,812 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:24:44,819 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,821 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,834 INFO L453 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 31 [2019-03-04 16:24:44,876 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,883 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,884 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,888 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,896 INFO L453 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 33 [2019-03-04 16:24:44,900 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,901 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,902 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,903 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,904 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,906 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,909 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,920 INFO L453 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 35 [2019-03-04 16:24:44,927 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,927 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,928 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,929 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,930 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,931 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,932 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,934 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,935 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,937 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,940 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:44,951 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 34 [2019-03-04 16:24:44,952 INFO L309 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:44,964 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:44,976 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:44,989 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:45,001 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:45,013 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:45,044 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:24:45,044 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:45,046 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:45,069 INFO L309 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-03-04 16:24:45,069 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 6 variables, input treesize:42, output treesize:47 [2019-03-04 16:24:47,127 WARN L181 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 29 [2019-03-04 16:24:47,137 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:47,138 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:47,140 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:47,141 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:47,145 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:47,145 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:47,146 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:47,147 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:47,148 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:47,150 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:47,185 INFO L453 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 5 new quantified variables, introduced 12 case distinctions, treesize of input 41 treesize of output 64 [2019-03-04 16:24:47,190 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 16 xjuncts. [2019-03-04 16:24:47,447 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 21 dim-0 vars, and 5 xjuncts. [2019-03-04 16:24:47,448 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:57, output treesize:196 [2019-03-04 16:24:59,727 WARN L181 SmtUtils]: Spent 12.22 s on a formula simplification that was a NOOP. DAG size: 106 [2019-03-04 16:24:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:59,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:24:59,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2019-03-04 16:24:59,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-03-04 16:24:59,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-03-04 16:24:59,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-03-04 16:24:59,780 INFO L87 Difference]: Start difference. First operand 27 states and 97 transitions. Second operand 6 states. [2019-03-04 16:25:30,808 WARN L181 SmtUtils]: Spent 30.93 s on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2019-03-04 16:25:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:25:35,284 INFO L93 Difference]: Finished difference Result 47 states and 122 transitions. [2019-03-04 16:25:35,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-03-04 16:25:35,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-03-04 16:25:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:25:35,285 INFO L225 Difference]: With dead ends: 47 [2019-03-04 16:25:35,286 INFO L226 Difference]: Without dead ends: 46 [2019-03-04 16:25:35,286 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 45.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-03-04 16:25:35,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-03-04 16:25:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 29. [2019-03-04 16:25:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-03-04 16:25:35,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 105 transitions. [2019-03-04 16:25:35,294 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 105 transitions. Word has length 4 [2019-03-04 16:25:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:25:35,295 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 105 transitions. [2019-03-04 16:25:35,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-03-04 16:25:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 105 transitions. [2019-03-04 16:25:35,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-03-04 16:25:35,296 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:25:35,296 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-03-04 16:25:35,296 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:25:35,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:25:35,296 INFO L82 PathProgramCache]: Analyzing trace with hash 945434, now seen corresponding path program 1 times [2019-03-04 16:25:35,296 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:25:35,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:25:35,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:25:35,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:25:35,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:25:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:25:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:25:35,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:25:35,402 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:25:35,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:25:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:25:35,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2019-03-04 16:25:35,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:25:35,423 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,426 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:25:35,427 INFO L309 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-03-04 16:25:35,431 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:35,450 INFO L453 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 21 treesize of output 24 [2019-03-04 16:25:35,458 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,459 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:25:35,479 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,480 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,480 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,481 INFO L453 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 26 treesize of output 28 [2019-03-04 16:25:35,484 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,485 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,486 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,487 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,488 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,491 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,493 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-03-04 16:25:35,496 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,497 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,498 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,499 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,500 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,501 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,502 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,503 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,504 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,506 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,507 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-03-04 16:25:35,511 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,513 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,514 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,515 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,516 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,517 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,518 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,520 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,521 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,522 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,524 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,525 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,526 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,527 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,528 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,529 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2019-03-04 16:25:35,530 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:25:35,542 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:35,553 INFO L309 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:35,564 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:35,588 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:35,600 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:35,624 INFO L309 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-03-04 16:25:35,624 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:45, output treesize:46 [2019-03-04 16:25:35,645 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,646 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,647 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,648 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,649 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,650 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,651 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,652 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,653 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,654 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,656 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,657 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,658 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,659 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,660 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,662 INFO L453 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 41 treesize of output 36 [2019-03-04 16:25:35,663 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:25:35,712 INFO L309 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-03-04 16:25:35,712 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:46 [2019-03-04 16:25:35,744 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,745 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,746 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,747 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,748 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,749 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,750 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,751 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,753 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,754 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,755 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,756 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,757 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,758 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,759 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:35,762 INFO L453 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 41 treesize of output 36 [2019-03-04 16:25:35,763 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:25:35,799 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:25:35,799 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:56, output treesize:48 [2019-03-04 16:25:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:25:35,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:25:35,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-03-04 16:25:35,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-03-04 16:25:35,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-03-04 16:25:35,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-03-04 16:25:35,978 INFO L87 Difference]: Start difference. First operand 29 states and 105 transitions. Second operand 8 states. [2019-03-04 16:25:38,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:25:38,368 INFO L93 Difference]: Finished difference Result 64 states and 162 transitions. [2019-03-04 16:25:38,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-03-04 16:25:38,369 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 4 [2019-03-04 16:25:38,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:25:38,370 INFO L225 Difference]: With dead ends: 64 [2019-03-04 16:25:38,370 INFO L226 Difference]: Without dead ends: 61 [2019-03-04 16:25:38,371 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-03-04 16:25:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-03-04 16:25:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 36. [2019-03-04 16:25:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-03-04 16:25:38,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 133 transitions. [2019-03-04 16:25:38,381 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 133 transitions. Word has length 4 [2019-03-04 16:25:38,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:25:38,381 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 133 transitions. [2019-03-04 16:25:38,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-03-04 16:25:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 133 transitions. [2019-03-04 16:25:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-03-04 16:25:38,382 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:25:38,382 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-03-04 16:25:38,382 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:25:38,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:25:38,383 INFO L82 PathProgramCache]: Analyzing trace with hash 945000, now seen corresponding path program 1 times [2019-03-04 16:25:38,383 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:25:38,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:25:38,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:25:38,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:25:38,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:25:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:25:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:25:38,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:25:38,484 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:25:38,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:25:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:25:38,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2019-03-04 16:25:38,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:25:38,506 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,510 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-03-04 16:25:38,510 INFO L309 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-03-04 16:25:38,518 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:38,534 INFO L453 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 21 treesize of output 24 [2019-03-04 16:25:38,540 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,541 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2019-03-04 16:25:38,546 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,547 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,548 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,549 INFO L453 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 26 treesize of output 28 [2019-03-04 16:25:38,577 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,578 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,579 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,579 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,580 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,581 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,582 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-03-04 16:25:38,601 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,603 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,605 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,607 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,608 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,608 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,609 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,610 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,611 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,612 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,613 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-03-04 16:25:38,617 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,619 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,620 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,621 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,622 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,623 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,624 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,625 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,627 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,628 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,629 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,654 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,676 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,698 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,722 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,723 INFO L301 Elim1Store]: Index analysis took 106 ms [2019-03-04 16:25:38,723 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2019-03-04 16:25:38,724 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:25:38,773 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:38,786 INFO L309 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:38,798 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:38,809 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:38,822 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:25:38,846 INFO L309 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-03-04 16:25:38,846 INFO L209 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:45, output treesize:46 [2019-03-04 16:25:38,878 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,879 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,880 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,881 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,882 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,883 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,884 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,885 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,886 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,896 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,905 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,906 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,907 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,907 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,908 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,910 INFO L453 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 41 treesize of output 36 [2019-03-04 16:25:38,911 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:25:38,937 INFO L309 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-03-04 16:25:38,937 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:46 [2019-03-04 16:25:38,984 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,985 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,986 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,987 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,989 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,990 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,991 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,992 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,993 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,994 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,995 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,997 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:38,998 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:39,001 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:39,002 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:25:39,003 INFO L453 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 41 treesize of output 36 [2019-03-04 16:25:39,004 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:25:39,027 INFO L309 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-03-04 16:25:39,028 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:56, output treesize:48 [2019-03-04 16:25:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:25:39,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:25:39,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-03-04 16:25:39,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-03-04 16:25:39,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-03-04 16:25:39,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-03-04 16:25:39,209 INFO L87 Difference]: Start difference. First operand 36 states and 133 transitions. Second operand 8 states. [2019-03-04 16:25:40,067 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-03-04 16:25:40,069 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2019-03-04 16:25:40,073 INFO L168 Benchmark]: Toolchain (without parser) took 79616.60 ms. Allocated memory was 138.9 MB in the beginning and 353.4 MB in the end (delta: 214.4 MB). Free memory was 106.4 MB in the beginning and 233.5 MB in the end (delta: -127.1 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2019-03-04 16:25:40,073 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory is still 107.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-03-04 16:25:40,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.76 ms. Allocated memory is still 138.9 MB. Free memory was 106.2 MB in the beginning and 103.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-03-04 16:25:40,074 INFO L168 Benchmark]: Boogie Preprocessor took 24.24 ms. Allocated memory is still 138.9 MB. Free memory was 103.9 MB in the beginning and 102.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-03-04 16:25:40,074 INFO L168 Benchmark]: RCFGBuilder took 388.28 ms. Allocated memory is still 138.9 MB. Free memory was 102.8 MB in the beginning and 91.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-03-04 16:25:40,075 INFO L168 Benchmark]: TraceAbstraction took 79146.18 ms. Allocated memory was 138.9 MB in the beginning and 353.4 MB in the end (delta: 214.4 MB). Free memory was 90.7 MB in the beginning and 233.5 MB in the end (delta: -142.8 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2019-03-04 16:25:40,077 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 0.23 ms. Allocated memory is still 138.9 MB. Free memory is still 107.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.76 ms. Allocated memory is still 138.9 MB. Free memory was 106.2 MB in the beginning and 103.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.24 ms. Allocated memory is still 138.9 MB. Free memory was 103.9 MB in the beginning and 102.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 388.28 ms. Allocated memory is still 138.9 MB. Free memory was 102.8 MB in the beginning and 91.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 79146.18 ms. Allocated memory was 138.9 MB in the beginning and 353.4 MB in the end (delta: 214.4 MB). Free memory was 90.7 MB in the beginning and 233.5 MB in the end (delta: -142.8 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...