java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-df3cc4e-m [2019-01-11 11:05:42,433 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-11 11:05:42,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-11 11:05:42,449 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-11 11:05:42,449 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-11 11:05:42,451 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-11 11:05:42,452 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-11 11:05:42,454 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-11 11:05:42,456 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-11 11:05:42,456 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-11 11:05:42,457 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-11 11:05:42,496 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-11 11:05:42,520 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-11 11:05:42,521 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-11 11:05:42,522 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-11 11:05:42,524 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-11 11:05:42,524 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-11 11:05:42,524 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-11 11:05:42,525 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-11 11:05:42,525 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-11 11:05:42,525 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-11 11:05:42,525 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-11 11:05:42,526 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-11 11:05:42,526 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-11 11:05:42,526 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-11 11:05:42,526 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-11 11:05:42,527 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-11 11:05:42,527 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-11 11:05:42,527 INFO L133 SettingsManager]: * Use SBE=true [2019-01-11 11:05:42,528 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-11 11:05:42,529 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-11 11:05:42,529 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-11 11:05:42,529 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-11 11:05:42,529 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-11 11:05:42,529 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-11 11:05:42,530 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-11 11:05:42,530 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-11 11:05:42,530 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-11 11:05:42,530 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-11 11:05:42,530 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-11 11:05:42,531 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-11 11:05:42,532 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-11 11:05:42,532 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-11 11:05:42,532 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-11 11:05:42,532 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-11 11:05:42,532 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-11 11:05:42,533 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-11 11:05:42,533 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-11 11:05:42,533 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-11 11:05:42,533 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-11 11:05:42,533 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-11 11:05:42,534 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-11 11:05:42,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-11 11:05:42,599 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-11 11:05:42,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-11 11:05:42,605 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-11 11:05:42,605 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-11 11:05:42,606 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-limited.bpl [2019-01-11 11:05:42,606 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-limited.bpl' [2019-01-11 11:05:42,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-11 11:05:42,667 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-11 11:05:42,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-11 11:05:42,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-11 11:05:42,668 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-11 11:05:42,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:05:42" (1/1) ... [2019-01-11 11:05:42,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:05:42" (1/1) ... [2019-01-11 11:05:42,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-11 11:05:42,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-11 11:05:42,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-11 11:05:42,739 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-11 11:05:42,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:05:42" (1/1) ... [2019-01-11 11:05:42,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:05:42" (1/1) ... [2019-01-11 11:05:42,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:05:42" (1/1) ... [2019-01-11 11:05:42,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:05:42" (1/1) ... [2019-01-11 11:05:42,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:05:42" (1/1) ... [2019-01-11 11:05:42,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:05:42" (1/1) ... [2019-01-11 11:05:42,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:05:42" (1/1) ... [2019-01-11 11:05:42,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-11 11:05:42,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-11 11:05:42,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-11 11:05:42,782 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-11 11:05:42,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:05:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-11 11:05:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-11 11:05:42,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-11 11:05:43,307 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-11 11:05:43,308 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-01-11 11:05:43,310 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 11:05:43 BoogieIcfgContainer [2019-01-11 11:05:43,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-11 11:05:43,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-11 11:05:43,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-11 11:05:43,316 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-11 11:05:43,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 11:05:42" (1/2) ... [2019-01-11 11:05:43,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2affd226 and model type speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 11:05:43, skipping insertion in model container [2019-01-11 11:05:43,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 11:05:43" (2/2) ... [2019-01-11 11:05:43,321 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-limited.bpl [2019-01-11 11:05:43,332 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-11 11:05:43,341 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-01-11 11:05:43,358 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-01-11 11:05:43,391 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-11 11:05:43,391 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-11 11:05:43,391 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-11 11:05:43,391 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-11 11:05:43,392 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-11 11:05:43,392 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-11 11:05:43,392 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-11 11:05:43,392 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-11 11:05:43,408 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-11 11:05:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-11 11:05:43,414 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:05:43,415 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-11 11:05:43,418 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:05:43,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:05:43,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-01-11 11:05:43,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:05:43,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:05:43,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:05:43,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:05:43,477 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:05:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:05:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:05:43,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-11 11:05:43,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-11 11:05:43,640 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 11:05:43,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-11 11:05:43,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-11 11:05:43,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 11:05:43,658 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-01-11 11:05:43,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:05:43,973 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-01-11 11:05:43,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-11 11:05:43,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-11 11:05:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:05:43,990 INFO L225 Difference]: With dead ends: 45 [2019-01-11 11:05:43,990 INFO L226 Difference]: Without dead ends: 40 [2019-01-11 11:05:43,994 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 [2019-01-11 11:05:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-01-11 11:05:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-01-11 11:05:44,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-11 11:05:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-01-11 11:05:44,046 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-01-11 11:05:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:05:44,047 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-01-11 11:05:44,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-11 11:05:44,047 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-01-11 11:05:44,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:05:44,048 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:05:44,048 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:05:44,049 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:05:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:05:44,049 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-01-11 11:05:44,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:05:44,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:05:44,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:05:44,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:05:44,051 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:05:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:05:44,290 WARN L181 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2019-01-11 11:05:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:05:44,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:05:44,305 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:05:44,306 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:05:44,308 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-01-11 11:05:44,344 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:05:44,344 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:05:44,421 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:05:44,422 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 122 root evaluator evaluations with a maximum evaluation depth of 3. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:05:44,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:05:44,428 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:05:44,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:05:44,429 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-11 11:05:44,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:05:44,439 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:05:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:05:44,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:05:44,862 WARN L181 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-01-11 11:05:44,896 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-01-11 11:05:44,926 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:44,930 INFO L478 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 36 treesize of output 42 [2019-01-11 11:05:44,946 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:44,947 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:44,950 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-11 11:05:44,967 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:44,969 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:44,971 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:44,974 INFO L478 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 40 treesize of output 66 [2019-01-11 11:05:44,986 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:44,989 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:44,991 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:44,993 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:44,997 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-11 11:05:45,029 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,031 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,035 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,038 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,041 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,044 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-11 11:05:45,068 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,070 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,072 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,074 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,076 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,078 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,081 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-11 11:05:45,105 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,107 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,109 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,111 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,113 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,115 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,117 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,120 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-11 11:05:45,164 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,178 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,184 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,204 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,225 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,238 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,242 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,244 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,244 INFO L303 Elim1Store]: Index analysis took 113 ms [2019-01-11 11:05:45,247 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-01-11 11:05:45,276 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,278 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,280 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,283 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,286 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,287 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,288 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,289 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:45,296 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 231 [2019-01-11 11:05:45,299 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-11 11:05:45,994 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:46,168 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:46,280 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:46,349 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:46,411 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:46,454 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:46,493 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:46,532 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:46,562 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:46,672 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:46,673 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:46,676 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 95 [2019-01-11 11:05:46,693 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2019-01-11 11:05:46,773 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:46,797 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:46,820 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:46,827 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:46,829 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:46,830 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 98 [2019-01-11 11:05:46,844 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 87 [2019-01-11 11:05:47,006 WARN L181 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-01-11 11:05:47,049 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,072 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,076 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,078 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,080 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,082 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,083 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,084 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,085 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,089 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 121 [2019-01-11 11:05:47,200 WARN L181 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-01-11 11:05:47,246 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,268 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,280 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,286 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,287 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,289 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,290 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,290 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,293 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,296 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 137 [2019-01-11 11:05:47,322 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 134 [2019-01-11 11:05:47,514 WARN L181 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-01-11 11:05:47,521 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,522 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,523 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,524 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,525 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,526 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,528 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,529 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,532 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 30 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-11 11:05:47,533 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-11 11:05:47,536 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:47,540 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:47,543 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:47,548 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:47,550 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:47,552 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:47,555 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:05:47,611 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-11 11:05:47,611 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:155, output treesize:78 [2019-01-11 11:05:47,751 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,773 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,781 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,785 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,786 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,787 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,788 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,788 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,790 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,803 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,804 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,805 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,805 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,806 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,807 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,809 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,810 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,811 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,813 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,814 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,815 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,818 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,819 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,820 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,821 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,821 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,823 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,824 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,825 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,827 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,829 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,830 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,831 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,833 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,834 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,835 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,836 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,838 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,839 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,842 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,843 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,844 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,844 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,846 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,847 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,848 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:05:47,849 INFO L303 Elim1Store]: Index analysis took 144 ms [2019-01-11 11:05:47,852 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 231 [2019-01-11 11:05:47,854 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:05:48,223 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-11 11:05:48,223 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:88, output treesize:78 [2019-01-11 11:05:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:05:51,049 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:05:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:05:51,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 11:05:51,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 11:05:51,165 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 11:05:51,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 11:05:51,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 11:05:51,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-11 11:05:51,166 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-01-11 11:06:43,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:06:43,717 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2019-01-11 11:06:43,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-11 11:06:43,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-11 11:06:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:06:43,719 INFO L225 Difference]: With dead ends: 79 [2019-01-11 11:06:43,719 INFO L226 Difference]: Without dead ends: 77 [2019-01-11 11:06:43,720 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=31, Invalid=40, Unknown=1, NotChecked=0, Total=72 [2019-01-11 11:06:43,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-01-11 11:06:43,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 26. [2019-01-11 11:06:43,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-11 11:06:43,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 57 transitions. [2019-01-11 11:06:43,728 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 57 transitions. Word has length 3 [2019-01-11 11:06:43,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:06:43,728 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 57 transitions. [2019-01-11 11:06:43,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-11 11:06:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 57 transitions. [2019-01-11 11:06:43,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:06:43,729 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:06:43,729 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:06:43,730 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:06:43,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:06:43,730 INFO L82 PathProgramCache]: Analyzing trace with hash 30888, now seen corresponding path program 1 times [2019-01-11 11:06:43,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:06:43,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:06:43,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:06:43,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:06:43,732 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:06:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:06:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:06:43,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:06:43,836 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:06:43,836 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:06:43,836 INFO L207 CegarAbsIntRunner]: [0], [34], [43] [2019-01-11 11:06:43,838 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:06:43,838 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:06:43,852 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:06:43,852 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 122 root evaluator evaluations with a maximum evaluation depth of 3. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:06:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:06:43,853 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:06:43,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:06:43,853 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-11 11:06:43,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:06:43,863 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:06:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:06:43,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:06:43,993 WARN L181 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-01-11 11:06:43,997 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-01-11 11:06:44,002 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,003 INFO L478 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 36 treesize of output 42 [2019-01-11 11:06:44,026 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,027 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,028 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-11 11:06:44,065 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,082 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,084 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,086 INFO L478 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 40 treesize of output 66 [2019-01-11 11:06:44,096 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,098 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,100 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,102 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,103 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-11 11:06:44,149 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,155 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,158 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,160 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,163 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,165 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-11 11:06:44,191 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,193 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,194 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,195 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,203 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,206 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,207 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-11 11:06:44,223 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,229 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,231 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,233 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,234 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,237 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,238 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,240 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-11 11:06:44,284 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,306 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,328 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,351 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,380 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,389 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,394 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,399 INFO L303 Elim1Store]: Index analysis took 154 ms [2019-01-11 11:06:44,401 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-01-11 11:06:44,417 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,418 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,420 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,421 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,423 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,425 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,427 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,429 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:44,434 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 231 [2019-01-11 11:06:44,437 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-11 11:06:44,856 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:44,961 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,040 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,111 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,182 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,237 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,285 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,321 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,358 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,461 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,463 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,464 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 84 [2019-01-11 11:06:45,473 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 69 [2019-01-11 11:06:45,477 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,478 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,479 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 73 [2019-01-11 11:06:45,484 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,487 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,488 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,489 INFO L478 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 61 treesize of output 81 [2019-01-11 11:06:45,525 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,530 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,531 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,532 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,533 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,534 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,535 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,539 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,540 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,542 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 121 [2019-01-11 11:06:45,661 WARN L181 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-01-11 11:06:45,682 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,683 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,684 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,685 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,686 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,687 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,689 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,690 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,692 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,693 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,695 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 137 [2019-01-11 11:06:45,701 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 134 [2019-01-11 11:06:45,918 WARN L181 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-01-11 11:06:45,924 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,925 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,926 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,928 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,929 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,930 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,932 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,933 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:45,935 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 30 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-11 11:06:45,936 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,940 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,943 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,945 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,948 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,951 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,959 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:45,962 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:06:46,024 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-11 11:06:46,024 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:141, output treesize:78 [2019-01-11 11:06:46,099 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,100 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,101 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,103 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,105 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,108 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,109 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,111 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,113 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,114 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,116 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,118 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,119 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,121 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,123 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,125 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,126 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,128 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,130 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,131 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,133 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,135 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,136 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,138 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,140 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,142 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,143 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,145 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,147 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,148 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,150 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,152 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,153 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,155 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,157 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,158 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,160 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,162 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,163 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,165 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,167 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,168 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,170 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,172 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,173 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:06:46,176 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 237 [2019-01-11 11:06:46,178 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:06:46,424 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-11 11:06:46,424 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:88, output treesize:78 [2019-01-11 11:06:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:06:49,393 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:06:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:06:49,422 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 11:06:49,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 11:06:49,423 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 11:06:49,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 11:06:49,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 11:06:49,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-11 11:06:49,424 INFO L87 Difference]: Start difference. First operand 26 states and 57 transitions. Second operand 6 states. [2019-01-11 11:07:39,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:07:39,363 INFO L93 Difference]: Finished difference Result 79 states and 126 transitions. [2019-01-11 11:07:39,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-11 11:07:39,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-11 11:07:39,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:07:39,366 INFO L225 Difference]: With dead ends: 79 [2019-01-11 11:07:39,366 INFO L226 Difference]: Without dead ends: 77 [2019-01-11 11:07:39,370 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=31, Invalid=40, Unknown=1, NotChecked=0, Total=72 [2019-01-11 11:07:39,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-01-11 11:07:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 31. [2019-01-11 11:07:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-11 11:07:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 75 transitions. [2019-01-11 11:07:39,387 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 75 transitions. Word has length 3 [2019-01-11 11:07:39,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:07:39,388 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 75 transitions. [2019-01-11 11:07:39,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-11 11:07:39,388 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 75 transitions. [2019-01-11 11:07:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:07:39,389 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:07:39,390 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:07:39,391 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:07:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:07:39,391 INFO L82 PathProgramCache]: Analyzing trace with hash 30020, now seen corresponding path program 1 times [2019-01-11 11:07:39,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:07:39,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:07:39,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:07:39,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:07:39,393 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:07:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:07:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:07:39,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:07:39,525 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:07:39,525 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:07:39,525 INFO L207 CegarAbsIntRunner]: [0], [6], [43] [2019-01-11 11:07:39,526 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:07:39,526 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:07:39,540 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:07:39,540 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 122 root evaluator evaluations with a maximum evaluation depth of 3. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:07:39,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:07:39,540 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:07:39,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:07:39,541 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-11 11:07:39,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:07:39,557 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:07:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:07:39,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:07:39,741 WARN L181 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-01-11 11:07:39,746 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-01-11 11:07:39,752 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,753 INFO L478 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 36 treesize of output 42 [2019-01-11 11:07:39,758 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,759 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,760 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-11 11:07:39,767 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,769 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,773 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,774 INFO L478 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 40 treesize of output 66 [2019-01-11 11:07:39,779 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,781 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,783 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,785 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,787 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-11 11:07:39,793 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,794 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,796 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,798 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,800 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,802 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-11 11:07:39,809 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,811 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,815 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,817 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,820 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,822 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,823 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-11 11:07:39,853 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,854 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,855 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,856 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,858 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,859 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,861 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,863 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-11 11:07:39,907 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,927 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,929 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,932 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,934 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,936 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,937 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,938 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,940 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-01-11 11:07:39,950 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,951 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,952 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,952 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,954 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,955 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,957 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,958 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,960 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:39,963 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 231 [2019-01-11 11:07:39,965 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-11 11:07:40,112 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:40,243 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:40,320 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:40,378 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:40,461 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:40,504 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:40,540 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:40,573 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:40,604 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:40,699 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,701 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,703 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 95 [2019-01-11 11:07:40,708 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2019-01-11 11:07:40,811 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,812 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,813 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,813 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,815 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,816 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 98 [2019-01-11 11:07:40,822 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 87 [2019-01-11 11:07:40,930 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,953 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,975 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,992 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,994 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,995 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,996 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,996 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,997 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:40,998 INFO L303 Elim1Store]: Index analysis took 109 ms [2019-01-11 11:07:40,999 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 121 [2019-01-11 11:07:41,104 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,107 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,108 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,110 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,111 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,113 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,114 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,116 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,117 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,119 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 137 [2019-01-11 11:07:41,135 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 134 [2019-01-11 11:07:41,282 WARN L181 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-01-11 11:07:41,287 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,288 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,289 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,290 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,293 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,294 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,295 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,297 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 30 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-11 11:07:41,299 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-11 11:07:41,302 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:41,305 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:41,307 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:41,309 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:41,311 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:41,313 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:41,316 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:41,364 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-11 11:07:41,364 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 11 variables, input treesize:155, output treesize:78 [2019-01-11 11:07:41,406 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,408 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,412 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,415 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,417 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,420 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,422 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,424 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,426 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,428 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,430 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,432 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,434 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,436 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,438 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,440 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,442 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,444 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,446 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,449 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,452 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,455 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,457 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,459 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,461 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,463 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,465 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,467 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,469 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,471 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,473 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,476 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,479 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,481 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,484 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,486 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,489 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,491 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,494 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,496 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,499 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,501 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,503 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,506 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,508 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:41,508 INFO L303 Elim1Store]: Index analysis took 115 ms [2019-01-11 11:07:41,509 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 237 [2019-01-11 11:07:41,511 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:07:41,788 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-11 11:07:41,788 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:88, output treesize:78 [2019-01-11 11:07:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:07:41,837 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:07:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:07:41,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-01-11 11:07:41,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 5 [2019-01-11 11:07:41,863 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 11:07:41,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-11 11:07:41,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-11 11:07:41,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-01-11 11:07:41,864 INFO L87 Difference]: Start difference. First operand 31 states and 75 transitions. Second operand 4 states. [2019-01-11 11:07:42,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 11:07:42,075 INFO L93 Difference]: Finished difference Result 37 states and 121 transitions. [2019-01-11 11:07:42,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-11 11:07:42,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-01-11 11:07:42,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 11:07:42,077 INFO L225 Difference]: With dead ends: 37 [2019-01-11 11:07:42,077 INFO L226 Difference]: Without dead ends: 36 [2019-01-11 11:07:42,078 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-01-11 11:07:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-11 11:07:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-01-11 11:07:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-01-11 11:07:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 120 transitions. [2019-01-11 11:07:42,088 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 120 transitions. Word has length 3 [2019-01-11 11:07:42,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 11:07:42,088 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 120 transitions. [2019-01-11 11:07:42,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-11 11:07:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 120 transitions. [2019-01-11 11:07:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 11:07:42,089 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 11:07:42,089 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 11:07:42,089 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 11:07:42,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:07:42,090 INFO L82 PathProgramCache]: Analyzing trace with hash 31074, now seen corresponding path program 1 times [2019-01-11 11:07:42,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 11:07:42,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:07:42,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:07:42,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 11:07:42,091 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 11:07:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:07:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:07:42,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:07:42,213 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 11:07:42,213 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 11:07:42,213 INFO L207 CegarAbsIntRunner]: [0], [40], [43] [2019-01-11 11:07:42,214 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 11:07:42,215 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 11:07:42,225 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 11:07:42,226 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 122 root evaluator evaluations with a maximum evaluation depth of 3. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 11:07:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 11:07:42,226 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 11:07:42,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 11:07:42,226 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-11 11:07:42,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 11:07:42,245 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 11:07:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 11:07:42,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 11:07:42,411 WARN L181 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-01-11 11:07:42,415 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,417 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,418 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 95 [2019-01-11 11:07:42,424 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2019-01-11 11:07:42,447 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,449 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,450 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,452 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,453 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,454 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 98 [2019-01-11 11:07:42,464 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 87 [2019-01-11 11:07:42,531 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,533 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,534 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,536 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,537 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,539 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,540 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,541 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,543 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,544 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 121 [2019-01-11 11:07:42,648 WARN L181 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-01-11 11:07:42,653 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,654 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,655 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,656 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,658 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,659 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,661 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,663 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,664 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,665 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,667 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 137 [2019-01-11 11:07:42,674 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 134 [2019-01-11 11:07:42,830 WARN L181 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-01-11 11:07:42,836 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,837 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,838 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,839 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,840 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,841 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,843 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,844 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,846 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 30 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-11 11:07:42,847 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-01-11 11:07:42,853 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:42,856 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:42,859 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:42,861 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:42,864 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:42,866 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:42,869 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:42,897 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-01-11 11:07:42,901 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,901 INFO L478 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 36 treesize of output 42 [2019-01-11 11:07:42,907 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,911 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,912 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-11 11:07:42,915 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,916 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,917 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,918 INFO L478 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 40 treesize of output 66 [2019-01-11 11:07:42,923 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,924 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,926 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,927 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:42,928 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-11 11:07:42,979 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,003 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,018 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,040 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,062 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,063 INFO L303 Elim1Store]: Index analysis took 131 ms [2019-01-11 11:07:43,064 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-11 11:07:43,103 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,128 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,155 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,179 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,201 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,226 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,226 INFO L303 Elim1Store]: Index analysis took 159 ms [2019-01-11 11:07:43,228 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-11 11:07:43,268 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,293 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,310 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,313 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,315 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,318 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,320 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,322 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-11 11:07:43,365 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,377 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,378 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,380 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,382 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,384 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,386 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,388 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,390 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-01-11 11:07:43,396 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,397 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,398 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,401 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,402 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,403 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,405 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,406 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,408 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 231 [2019-01-11 11:07:43,410 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-11 11:07:43,557 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:43,644 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:43,715 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:43,768 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:43,809 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:43,842 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:43,869 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:43,894 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:43,918 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 11:07:43,967 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-11 11:07:43,967 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:155, output treesize:78 [2019-01-11 11:07:43,996 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,997 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,998 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:43,999 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,000 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,001 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,003 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,004 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,005 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,006 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,008 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,009 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,010 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,012 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,013 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,014 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,015 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,017 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,018 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,019 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,020 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,022 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,023 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,024 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,025 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,026 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,027 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,029 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,030 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,031 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,032 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,034 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,035 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,036 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,037 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,039 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,040 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,041 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,043 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,044 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,045 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,046 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,048 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,049 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,050 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,051 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 11:07:44,053 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 237 [2019-01-11 11:07:44,055 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 11:07:44,261 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-11 11:07:44,262 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:88, output treesize:78 [2019-01-11 11:07:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:07:47,218 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 11:07:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 11:07:47,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 11:07:47,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 11:07:47,262 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 11:07:47,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 11:07:47,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 11:07:47,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-11 11:07:47,262 INFO L87 Difference]: Start difference. First operand 35 states and 120 transitions. Second operand 6 states.