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-9-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f57a05f [2019-01-08 14:05:03,668 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-08 14:05:03,670 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-08 14:05:03,682 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-01-08 14:05:03,720 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-08 14:05:03,741 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-08 14:05:03,741 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-08 14:05:03,744 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-08 14:05:03,744 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-08 14:05:03,744 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-08 14:05:03,744 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-08 14:05:03,744 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-08 14:05:03,745 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-08 14:05:03,745 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-08 14:05:03,745 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-08 14:05:03,745 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-08 14:05:03,745 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-08 14:05:03,746 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-08 14:05:03,746 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-08 14:05:03,746 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-08 14:05:03,748 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-08 14:05:03,748 INFO L133 SettingsManager]: * Use SBE=true [2019-01-08 14:05:03,748 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-08 14:05:03,748 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-08 14:05:03,749 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-08 14:05:03,750 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-08 14:05:03,750 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-08 14:05:03,750 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-08 14:05:03,750 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-08 14:05:03,751 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-08 14:05:03,752 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-08 14:05:03,752 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-08 14:05:03,752 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-08 14:05:03,752 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-08 14:05:03,753 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-08 14:05:03,753 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-08 14:05:03,753 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-08 14:05:03,753 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-08 14:05:03,754 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-08 14:05:03,754 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-08 14:05:03,754 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-08 14:05:03,755 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-08 14:05:03,755 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-08 14:05:03,755 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-08 14:05:03,755 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-08 14:05:03,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-08 14:05:03,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-08 14:05:03,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-08 14:05:03,814 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-08 14:05:03,814 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-08 14:05:03,815 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl [2019-01-08 14:05:03,815 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl' [2019-01-08 14:05:03,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-08 14:05:03,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-08 14:05:03,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-08 14:05:03,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-08 14:05:03,860 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-08 14:05:03,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:05:03" (1/1) ... [2019-01-08 14:05:03,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:05:03" (1/1) ... [2019-01-08 14:05:03,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-08 14:05:03,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-08 14:05:03,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-08 14:05:03,924 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-08 14:05:03,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:05:03" (1/1) ... [2019-01-08 14:05:03,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:05:03" (1/1) ... [2019-01-08 14:05:03,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:05:03" (1/1) ... [2019-01-08 14:05:03,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:05:03" (1/1) ... [2019-01-08 14:05:03,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:05:03" (1/1) ... [2019-01-08 14:05:03,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:05:03" (1/1) ... [2019-01-08 14:05:03,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:05:03" (1/1) ... [2019-01-08 14:05:03,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-08 14:05:03,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-08 14:05:03,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-08 14:05:03,952 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-08 14:05:03,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:05:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-08 14:05:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-08 14:05:04,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-08 14:05:04,555 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-08 14:05:04,555 INFO L286 CfgBuilder]: Removed 21 assue(true) statements. [2019-01-08 14:05:04,556 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 02:05:04 BoogieIcfgContainer [2019-01-08 14:05:04,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-08 14:05:04,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-08 14:05:04,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-08 14:05:04,561 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-08 14:05:04,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:05:03" (1/2) ... [2019-01-08 14:05:04,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9718ff and model type speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 02:05:04, skipping insertion in model container [2019-01-08 14:05:04,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 02:05:04" (2/2) ... [2019-01-08 14:05:04,574 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-limited.bpl [2019-01-08 14:05:04,584 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-08 14:05:04,592 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-01-08 14:05:04,609 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-01-08 14:05:04,638 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-08 14:05:04,638 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-08 14:05:04,638 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-08 14:05:04,638 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-08 14:05:04,638 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-08 14:05:04,639 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-08 14:05:04,639 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-08 14:05:04,639 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-08 14:05:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-01-08 14:05:04,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-08 14:05:04,659 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 14:05:04,660 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-08 14:05:04,663 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-08 14:05:04,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:05:04,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-01-08 14:05:04,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 14:05:04,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:05:04,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:05:04,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:05:04,715 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 14:05:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:05:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:05:04,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-08 14:05:04,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-08 14:05:04,893 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-08 14:05:04,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-08 14:05:04,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-08 14:05:04,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-08 14:05:04,912 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-01-08 14:05:05,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 14:05:05,135 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2019-01-08 14:05:05,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-08 14:05:05,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-08 14:05:05,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 14:05:05,152 INFO L225 Difference]: With dead ends: 41 [2019-01-08 14:05:05,153 INFO L226 Difference]: Without dead ends: 36 [2019-01-08 14:05:05,156 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 [2019-01-08 14:05:05,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-08 14:05:05,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-01-08 14:05:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-08 14:05:05,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2019-01-08 14:05:05,192 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2019-01-08 14:05:05,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 14:05:05,194 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2019-01-08 14:05:05,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-08 14:05:05,194 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2019-01-08 14:05:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-08 14:05:05,195 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 14:05:05,195 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-08 14:05:05,196 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-08 14:05:05,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:05:05,196 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2019-01-08 14:05:05,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 14:05:05,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:05:05,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:05:05,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:05:05,198 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 14:05:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:05:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:05:05,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:05:05,461 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 14:05:05,462 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-08 14:05:05,464 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2019-01-08 14:05:05,524 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-08 14:05:05,524 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-08 14:05:05,612 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-08 14:05:05,614 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 3. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-08 14:05:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:05:05,621 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-08 14:05:05,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:05:05,621 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-08 14:05:05,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:05:05,640 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 14:05:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:05:05,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 14:05:06,281 WARN L181 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-01-08 14:05:06,315 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 30 treesize of output 33 [2019-01-08 14:05:06,357 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,361 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 33 treesize of output 39 [2019-01-08 14:05:06,404 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,417 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,419 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 35 treesize of output 49 [2019-01-08 14:05:06,439 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,443 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,445 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,449 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 37 treesize of output 63 [2019-01-08 14:05:06,466 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,489 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,497 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,501 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,503 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 39 treesize of output 81 [2019-01-08 14:05:06,546 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,549 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,553 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,555 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,556 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,560 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 41 treesize of output 103 [2019-01-08 14:05:06,581 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,586 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,589 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,591 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,593 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,613 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,618 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 43 treesize of output 129 [2019-01-08 14:05:06,663 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,665 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,666 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,668 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,670 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,673 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,674 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,677 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 45 treesize of output 159 [2019-01-08 14:05:06,698 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,733 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,751 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,753 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,754 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,759 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,761 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:06,765 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 190 [2019-01-08 14:05:06,771 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-08 14:05:07,329 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:07,424 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:07,536 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:07,647 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:07,738 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:07,774 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:07,811 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:07,840 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:07,965 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:07,966 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:07,968 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 [2019-01-08 14:05:07,991 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 [2019-01-08 14:05:08,086 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,088 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,089 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 73 treesize of output 78 [2019-01-08 14:05:08,165 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,192 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,212 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,239 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,266 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,284 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,286 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,286 INFO L303 Elim1Store]: Index analysis took 156 ms [2019-01-08 14:05:08,288 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 107 [2019-01-08 14:05:08,434 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,437 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,438 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,439 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,440 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,442 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,443 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,447 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,448 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2019-01-08 14:05:08,779 WARN L181 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-08 14:05:08,808 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,809 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,810 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,811 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,812 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,813 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,815 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,816 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,819 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,820 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:08,824 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 47 treesize of output 134 [2019-01-08 14:05:09,058 WARN L181 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-08 14:05:09,101 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,124 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,130 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,132 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,133 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,134 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,135 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,136 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,138 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,139 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,141 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,142 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,145 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 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 [2019-01-08 14:05:09,146 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-08 14:05:09,154 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:09,156 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:09,157 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:09,177 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:09,201 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:09,212 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:05:09,258 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-08 14:05:09,260 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:149, output treesize:70 [2019-01-08 14:05:09,358 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,360 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,360 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,362 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,364 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,366 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,368 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,370 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,372 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,374 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,376 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,378 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,379 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,380 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,382 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,383 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,384 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,386 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,387 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,388 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,390 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,391 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,392 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,393 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,395 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,396 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,397 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,400 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,401 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,403 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,404 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,405 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,407 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:05:09,413 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 190 [2019-01-08 14:05:09,415 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-08 14:05:09,659 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-08 14:05:09,660 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:80, output treesize:70 [2019-01-08 14:05:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:05:12,477 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 14:05:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:05:12,627 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-08 14:05:12,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-08 14:05:12,627 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-08 14:05:12,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-08 14:05:12,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-08 14:05:12,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-08 14:05:12,629 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2019-01-08 14:06:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 14:06:02,063 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2019-01-08 14:06:02,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-08 14:06:02,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-08 14:06:02,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 14:06:02,065 INFO L225 Difference]: With dead ends: 71 [2019-01-08 14:06:02,065 INFO L226 Difference]: Without dead ends: 69 [2019-01-08 14:06:02,066 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 [2019-01-08 14:06:02,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-01-08 14:06:02,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 24. [2019-01-08 14:06:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-08 14:06:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2019-01-08 14:06:02,074 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 3 [2019-01-08 14:06:02,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 14:06:02,075 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2019-01-08 14:06:02,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-08 14:06:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2019-01-08 14:06:02,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-08 14:06:02,076 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 14:06:02,076 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-08 14:06:02,077 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-08 14:06:02,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:06:02,077 INFO L82 PathProgramCache]: Analyzing trace with hash 30884, now seen corresponding path program 1 times [2019-01-08 14:06:02,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 14:06:02,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:06:02,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:06:02,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:06:02,078 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 14:06:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:06:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:06:02,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:06:02,216 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 14:06:02,216 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-08 14:06:02,216 INFO L207 CegarAbsIntRunner]: [0], [34], [39] [2019-01-08 14:06:02,217 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-08 14:06:02,217 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-08 14:06:02,231 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-08 14:06:02,231 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 3. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-08 14:06:02,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:06:02,231 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-08 14:06:02,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:06:02,232 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-08 14:06:02,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:06:02,241 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 14:06:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:06:02,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 14:06:02,401 WARN L181 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-01-08 14:06:02,408 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,411 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 [2019-01-08 14:06:02,425 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 [2019-01-08 14:06:02,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,433 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,434 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 73 treesize of output 78 [2019-01-08 14:06:02,468 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,470 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,471 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,473 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,474 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,476 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,477 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,480 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 107 [2019-01-08 14:06:02,616 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,617 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,619 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,620 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,621 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,622 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,624 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,626 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,628 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2019-01-08 14:06:02,758 WARN L181 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-08 14:06:02,765 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,766 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,767 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,768 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,769 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,771 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,773 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,774 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,776 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,777 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,780 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 47 treesize of output 134 [2019-01-08 14:06:02,955 WARN L181 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-08 14:06:02,997 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,998 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:02,999 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,001 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,003 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,004 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,006 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,008 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,009 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,011 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,014 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,016 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,018 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 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 [2019-01-08 14:06:03,020 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,037 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,051 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,068 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,070 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,073 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,076 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,119 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 30 treesize of output 33 [2019-01-08 14:06:03,122 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,124 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 33 treesize of output 39 [2019-01-08 14:06:03,130 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,134 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,135 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 35 treesize of output 49 [2019-01-08 14:06:03,145 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,147 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,149 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,150 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 37 treesize of output 63 [2019-01-08 14:06:03,160 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,162 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,165 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,167 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,168 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 39 treesize of output 81 [2019-01-08 14:06:03,182 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,184 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,187 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,189 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,192 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,193 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 41 treesize of output 103 [2019-01-08 14:06:03,231 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,250 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,271 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,281 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,283 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,284 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,287 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 43 treesize of output 129 [2019-01-08 14:06:03,330 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,355 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,382 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,403 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,429 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,451 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,472 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,473 INFO L303 Elim1Store]: Index analysis took 181 ms [2019-01-08 14:06:03,474 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 45 treesize of output 159 [2019-01-08 14:06:03,517 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,539 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,566 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,591 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,609 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,630 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,635 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,637 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:03,637 INFO L303 Elim1Store]: Index analysis took 158 ms [2019-01-08 14:06:03,639 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 190 [2019-01-08 14:06:03,641 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,778 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,857 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,914 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,962 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:03,998 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:04,041 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:04,063 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:04,085 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:04,133 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-08 14:06:04,134 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:149, output treesize:70 [2019-01-08 14:06:04,177 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,178 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,179 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,181 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,183 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,184 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,186 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,188 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,189 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,191 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,193 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,194 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,196 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,198 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,200 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,201 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,203 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,205 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,206 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,208 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,210 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,211 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,213 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,215 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,217 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,218 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,220 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,222 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,223 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,225 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,227 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,228 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,230 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,232 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,234 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,235 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,237 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:04,240 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 196 [2019-01-08 14:06:04,242 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-08 14:06:04,449 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-08 14:06:04,449 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:80, output treesize:70 [2019-01-08 14:06:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:06:07,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 14:06:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:06:07,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-08 14:06:07,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-08 14:06:07,308 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-08 14:06:07,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-08 14:06:07,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-08 14:06:07,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-08 14:06:07,309 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand 6 states. [2019-01-08 14:06:54,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 14:06:54,006 INFO L93 Difference]: Finished difference Result 71 states and 113 transitions. [2019-01-08 14:06:54,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-08 14:06:54,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-08 14:06:54,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 14:06:54,007 INFO L225 Difference]: With dead ends: 71 [2019-01-08 14:06:54,008 INFO L226 Difference]: Without dead ends: 69 [2019-01-08 14:06:54,010 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=31, Invalid=40, Unknown=1, NotChecked=0, Total=72 [2019-01-08 14:06:54,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-01-08 14:06:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 29. [2019-01-08 14:06:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-08 14:06:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 69 transitions. [2019-01-08 14:06:54,021 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 69 transitions. Word has length 3 [2019-01-08 14:06:54,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 14:06:54,023 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 69 transitions. [2019-01-08 14:06:54,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-08 14:06:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 69 transitions. [2019-01-08 14:06:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-08 14:06:54,023 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 14:06:54,024 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-08 14:06:54,024 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-08 14:06:54,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:06:54,024 INFO L82 PathProgramCache]: Analyzing trace with hash 30946, now seen corresponding path program 1 times [2019-01-08 14:06:54,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 14:06:54,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:06:54,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:06:54,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:06:54,026 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 14:06:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:06:54,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:06:54,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:06:54,142 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 14:06:54,142 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-08 14:06:54,142 INFO L207 CegarAbsIntRunner]: [0], [36], [39] [2019-01-08 14:06:54,144 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-08 14:06:54,144 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-08 14:06:54,155 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-08 14:06:54,156 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 3. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-08 14:06:54,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:06:54,156 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-08 14:06:54,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:06:54,156 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-08 14:06:54,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:06:54,167 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 14:06:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:06:54,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 14:06:54,408 WARN L181 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-01-08 14:06:54,414 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 30 treesize of output 33 [2019-01-08 14:06:54,419 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,420 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 33 treesize of output 39 [2019-01-08 14:06:54,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,434 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,435 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 35 treesize of output 49 [2019-01-08 14:06:54,441 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,442 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,444 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,445 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 37 treesize of output 63 [2019-01-08 14:06:54,453 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,458 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,460 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,462 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,464 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 81 [2019-01-08 14:06:54,471 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,474 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,476 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,479 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,481 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,482 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 41 treesize of output 103 [2019-01-08 14:06:54,490 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,493 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,495 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,496 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,500 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,502 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,504 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 43 treesize of output 129 [2019-01-08 14:06:54,545 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,547 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,548 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,549 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,551 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,552 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,557 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,559 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 45 treesize of output 159 [2019-01-08 14:06:54,607 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,635 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,658 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,669 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,670 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,671 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,672 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,673 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:54,674 INFO L303 Elim1Store]: Index analysis took 110 ms [2019-01-08 14:06:54,676 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 190 [2019-01-08 14:06:54,678 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-08 14:06:54,826 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:54,907 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:54,965 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,014 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,050 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,081 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,112 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,185 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,280 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,282 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,283 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 80 treesize of output 83 [2019-01-08 14:06:55,289 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 79 treesize of output 65 [2019-01-08 14:06:55,317 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,318 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,319 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,320 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,321 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,323 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 86 [2019-01-08 14:06:55,387 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,389 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,404 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,411 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,413 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,414 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,415 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 91 [2019-01-08 14:06:55,507 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,508 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,509 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,509 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,511 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,512 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,513 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,515 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,516 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 105 [2019-01-08 14:06:55,697 WARN L181 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-01-08 14:06:55,702 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,704 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,705 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,706 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,709 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,710 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,712 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,713 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,714 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,716 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 85 [2019-01-08 14:06:55,717 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,720 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,722 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,743 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,760 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,762 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:06:55,804 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-08 14:06:55,805 INFO L202 ElimStorePlain]: Needed 16 recursive calls to eliminate 9 variables, input treesize:137, output treesize:70 [2019-01-08 14:06:55,838 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,839 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,840 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,841 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,842 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,844 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,845 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,846 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,847 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,849 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,850 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,851 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,853 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,854 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,855 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,856 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,858 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,859 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,862 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,863 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,865 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,867 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,868 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,869 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,871 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,872 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,873 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,875 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,877 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,879 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,880 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,881 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,883 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,885 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:55,887 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 196 [2019-01-08 14:06:55,889 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-08 14:06:56,051 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-08 14:06:56,051 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:80, output treesize:70 [2019-01-08 14:06:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:06:59,115 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 14:06:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:06:59,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-01-08 14:06:59,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 6 [2019-01-08 14:06:59,148 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-08 14:06:59,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-08 14:06:59,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-08 14:06:59,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=29, Unknown=1, NotChecked=0, Total=56 [2019-01-08 14:06:59,149 INFO L87 Difference]: Start difference. First operand 29 states and 69 transitions. Second operand 4 states. [2019-01-08 14:06:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 14:06:59,232 INFO L93 Difference]: Finished difference Result 31 states and 80 transitions. [2019-01-08 14:06:59,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-08 14:06:59,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-01-08 14:06:59,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 14:06:59,235 INFO L225 Difference]: With dead ends: 31 [2019-01-08 14:06:59,235 INFO L226 Difference]: Without dead ends: 30 [2019-01-08 14:06:59,236 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=26, Invalid=29, Unknown=1, NotChecked=0, Total=56 [2019-01-08 14:06:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-01-08 14:06:59,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-01-08 14:06:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-01-08 14:06:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 79 transitions. [2019-01-08 14:06:59,242 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 79 transitions. Word has length 3 [2019-01-08 14:06:59,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 14:06:59,242 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 79 transitions. [2019-01-08 14:06:59,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-08 14:06:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 79 transitions. [2019-01-08 14:06:59,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-08 14:06:59,242 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 14:06:59,243 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-08 14:06:59,243 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-08 14:06:59,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:06:59,243 INFO L82 PathProgramCache]: Analyzing trace with hash 31072, now seen corresponding path program 1 times [2019-01-08 14:06:59,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 14:06:59,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:06:59,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:06:59,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:06:59,244 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 14:06:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:06:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:06:59,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-08 14:06:59,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-08 14:06:59,286 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-08 14:06:59,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-08 14:06:59,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-08 14:06:59,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-08 14:06:59,287 INFO L87 Difference]: Start difference. First operand 30 states and 79 transitions. Second operand 3 states. [2019-01-08 14:06:59,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 14:06:59,487 INFO L93 Difference]: Finished difference Result 37 states and 80 transitions. [2019-01-08 14:06:59,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-08 14:06:59,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-01-08 14:06:59,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 14:06:59,488 INFO L225 Difference]: With dead ends: 37 [2019-01-08 14:06:59,489 INFO L226 Difference]: Without dead ends: 36 [2019-01-08 14:06:59,489 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 [2019-01-08 14:06:59,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-08 14:06:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-01-08 14:06:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-01-08 14:06:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 78 transitions. [2019-01-08 14:06:59,496 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 78 transitions. Word has length 3 [2019-01-08 14:06:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 14:06:59,496 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 78 transitions. [2019-01-08 14:06:59,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-08 14:06:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 78 transitions. [2019-01-08 14:06:59,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-08 14:06:59,496 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 14:06:59,497 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-08 14:06:59,497 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-08 14:06:59,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:06:59,497 INFO L82 PathProgramCache]: Analyzing trace with hash 30140, now seen corresponding path program 1 times [2019-01-08 14:06:59,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 14:06:59,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:06:59,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:06:59,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:06:59,499 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 14:06:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:06:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:06:59,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:06:59,552 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 14:06:59,552 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-08 14:06:59,552 INFO L207 CegarAbsIntRunner]: [0], [10], [39] [2019-01-08 14:06:59,553 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-08 14:06:59,553 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-08 14:06:59,564 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-08 14:06:59,564 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 3. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-08 14:06:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:06:59,565 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-08 14:06:59,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:06:59,565 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-08 14:06:59,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:06:59,579 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 14:06:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:06:59,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 14:06:59,784 WARN L181 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-01-08 14:06:59,789 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2019-01-08 14:06:59,793 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,794 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 33 treesize of output 39 [2019-01-08 14:06:59,800 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,802 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,804 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 35 treesize of output 49 [2019-01-08 14:06:59,811 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,813 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,815 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,816 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 63 [2019-01-08 14:06:59,822 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,825 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,826 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,828 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,829 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 39 treesize of output 81 [2019-01-08 14:06:59,841 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,843 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,844 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,846 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,848 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,850 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 41 treesize of output 103 [2019-01-08 14:06:59,856 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,858 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,862 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,865 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,866 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,867 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 43 treesize of output 129 [2019-01-08 14:06:59,875 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,877 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,878 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,880 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,882 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,884 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,887 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,889 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 45 treesize of output 159 [2019-01-08 14:06:59,897 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,898 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,900 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,902 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,903 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,905 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,907 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,917 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:06:59,919 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 190 [2019-01-08 14:06:59,920 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-08 14:07:00,034 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:00,104 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:00,161 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:00,206 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:00,249 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:00,294 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:00,326 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:00,355 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:00,450 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,451 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,452 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 106 treesize of output 106 [2019-01-08 14:07:00,458 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 102 treesize of output 85 [2019-01-08 14:07:00,491 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,492 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,493 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,494 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,495 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,496 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 78 treesize of output 103 [2019-01-08 14:07:00,563 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,564 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,566 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,567 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,569 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,570 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,571 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 105 [2019-01-08 14:07:00,743 WARN L181 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-01-08 14:07:00,750 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,751 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,753 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,755 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,756 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,758 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,759 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,761 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,764 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2019-01-08 14:07:00,869 WARN L181 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-08 14:07:00,874 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,875 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,877 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,879 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,880 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,881 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,883 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,884 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,886 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:00,887 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 47 treesize of output 134 [2019-01-08 14:07:01,017 WARN L181 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-08 14:07:01,023 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,023 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,024 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,025 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,027 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,028 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,029 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,031 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,032 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,033 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,035 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,036 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,037 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 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 [2019-01-08 14:07:01,039 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-08 14:07:01,041 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:01,044 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:01,047 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:01,051 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:01,052 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:01,055 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:07:01,099 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-08 14:07:01,099 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:163, output treesize:70 [2019-01-08 14:07:01,139 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,140 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,140 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,141 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,142 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,144 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,145 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,146 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,147 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,149 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,150 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,151 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,152 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,154 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,155 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,156 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,157 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,159 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,160 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,161 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,162 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,164 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,165 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,166 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,168 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,169 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,170 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,171 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,173 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,174 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,175 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,176 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,178 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,179 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,180 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,181 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,183 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 14:07:01,185 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 196 [2019-01-08 14:07:01,186 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-08 14:07:01,354 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-08 14:07:01,355 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:80, output treesize:70 [2019-01-08 14:07:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:07:04,334 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 14:07:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:07:04,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-08 14:07:04,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-08 14:07:04,368 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-08 14:07:04,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-08 14:07:04,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-08 14:07:04,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-08 14:07:04,369 INFO L87 Difference]: Start difference. First operand 30 states and 78 transitions. Second operand 6 states.