java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a9d37a5-m [2019-02-28 10:55:23,676 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-28 10:55:23,678 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-28 10:55:23,695 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-28 10:55:23,695 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-28 10:55:23,696 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-28 10:55:23,698 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-28 10:55:23,701 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-28 10:55:23,703 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-28 10:55:23,704 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-28 10:55:23,705 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-02-28 10:55:23,747 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-02-28 10:55:23,771 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-28 10:55:23,771 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-28 10:55:23,772 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-28 10:55:23,772 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-28 10:55:23,773 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-28 10:55:23,773 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-28 10:55:23,773 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-28 10:55:23,773 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-28 10:55:23,773 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-28 10:55:23,773 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-02-28 10:55:23,774 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-02-28 10:55:23,777 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-28 10:55:23,777 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-28 10:55:23,778 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-28 10:55:23,778 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-28 10:55:23,778 INFO L133 SettingsManager]: * Use SBE=true [2019-02-28 10:55:23,778 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-28 10:55:23,780 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-28 10:55:23,780 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-28 10:55:23,780 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-28 10:55:23,780 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-28 10:55:23,780 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-28 10:55:23,781 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-28 10:55:23,781 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-28 10:55:23,781 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-28 10:55:23,781 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-28 10:55:23,781 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-28 10:55:23,782 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-28 10:55:23,782 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-28 10:55:23,782 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-28 10:55:23,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:55:23,783 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-28 10:55:23,783 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-28 10:55:23,783 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-28 10:55:23,783 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-28 10:55:23,783 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-28 10:55:23,784 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in [2019-02-28 10:55:23,784 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-28 10:55:23,784 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-28 10:55:23,837 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-28 10:55:23,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-28 10:55:23,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-28 10:55:23,860 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-28 10:55:23,860 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-28 10:55:23,861 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-unlimited.bpl [2019-02-28 10:55:23,862 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-unlimited.bpl' [2019-02-28 10:55:23,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-28 10:55:23,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-28 10:55:23,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-28 10:55:23,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-28 10:55:23,908 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-28 10:55:23,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:55:23" (1/1) ... [2019-02-28 10:55:23,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:55:23" (1/1) ... [2019-02-28 10:55:23,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-28 10:55:23,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-28 10:55:23,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-28 10:55:23,969 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-28 10:55:23,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:55:23" (1/1) ... [2019-02-28 10:55:23,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:55:23" (1/1) ... [2019-02-28 10:55:23,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:55:23" (1/1) ... [2019-02-28 10:55:23,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:55:23" (1/1) ... [2019-02-28 10:55:23,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:55:23" (1/1) ... [2019-02-28 10:55:23,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:55:23" (1/1) ... [2019-02-28 10:55:23,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:55:23" (1/1) ... [2019-02-28 10:55:23,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-28 10:55:23,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-28 10:55:23,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-28 10:55:23,995 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-28 10:55:23,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:55:23" (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:16092 -smt2 -in -t:200000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:55:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-28 10:55:24,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-28 10:55:24,593 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-28 10:55:24,594 INFO L286 CfgBuilder]: Removed 19 assue(true) statements. [2019-02-28 10:55:24,595 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:55:24 BoogieIcfgContainer [2019-02-28 10:55:24,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-28 10:55:24,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-28 10:55:24,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-28 10:55:24,610 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-28 10:55:24,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:55:23" (1/2) ... [2019-02-28 10:55:24,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256126d5 and model type speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.02 10:55:24, skipping insertion in model container [2019-02-28 10:55:24,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:55:24" (2/2) ... [2019-02-28 10:55:24,613 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-8-unlimited.bpl [2019-02-28 10:55:24,623 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-28 10:55:24,631 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-02-28 10:55:24,645 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-02-28 10:55:24,672 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-28 10:55:24,672 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-28 10:55:24,672 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-28 10:55:24,673 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-28 10:55:24,673 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-28 10:55:24,673 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-28 10:55:24,673 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-28 10:55:24,674 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-28 10:55:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-02-28 10:55:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-02-28 10:55:24,692 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:55:24,693 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-02-28 10:55:24,696 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:55:24,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:24,702 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-02-28 10:55:24,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:55:24,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:24,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:24,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:24,749 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:55:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:24,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 10:55:24,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-28 10:55:24,946 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:55:24,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 10:55:24,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 10:55:24,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:55:24,969 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-02-28 10:55:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:55:25,203 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2019-02-28 10:55:25,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 10:55:25,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-28 10:55:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:55:25,232 INFO L225 Difference]: With dead ends: 37 [2019-02-28 10:55:25,233 INFO L226 Difference]: Without dead ends: 32 [2019-02-28 10:55:25,237 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 [2019-02-28 10:55:25,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-02-28 10:55:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 18. [2019-02-28 10:55:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-02-28 10:55:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 33 transitions. [2019-02-28 10:55:25,293 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 33 transitions. Word has length 2 [2019-02-28 10:55:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:55:25,294 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 33 transitions. [2019-02-28 10:55:25,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 10:55:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 33 transitions. [2019-02-28 10:55:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:55:25,295 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:55:25,295 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:55:25,295 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:55:25,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:25,296 INFO L82 PathProgramCache]: Analyzing trace with hash 30818, now seen corresponding path program 1 times [2019-02-28 10:55:25,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:55:25,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:25,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:25,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:25,298 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:55:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:25,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:25,587 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:55:25,588 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:55:25,590 INFO L207 CegarAbsIntRunner]: [0], [32], [35] [2019-02-28 10:55:25,643 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 10:55:25,644 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:55:29,478 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:55:29,480 INFO L272 AbstractInterpreter]: Visited 3 different actions 11 times. Merged at 1 different actions 4 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 2 different actions. Largest state had 0 variables. [2019-02-28 10:55:29,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:29,488 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:55:29,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:29,488 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 [2019-02-28 10:55:29,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:29,504 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:55:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:29,534 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 20 conjunts are in the unsatisfiable core [2019-02-28 10:55:29,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:55:29,614 INFO L442 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 27 treesize of output 30 [2019-02-28 10:55:29,662 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,665 INFO L442 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 30 treesize of output 32 [2019-02-28 10:55:29,705 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,729 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,753 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,755 INFO L442 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 32 treesize of output 34 [2019-02-28 10:55:29,795 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,820 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,846 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,872 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,897 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,907 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,908 INFO L289 Elim1Store]: Index analysis took 133 ms [2019-02-28 10:55:29,911 INFO L442 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 34 treesize of output 36 [2019-02-28 10:55:29,940 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,945 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,949 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,951 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,953 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,958 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,960 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,961 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:29,991 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,014 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,017 INFO L442 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 36 treesize of output 38 [2019-02-28 10:55:30,064 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,092 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,095 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,110 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,134 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,139 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,142 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,143 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,145 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,148 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,151 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,185 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,217 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,244 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,268 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,269 INFO L289 Elim1Store]: Index analysis took 227 ms [2019-02-28 10:55:30,271 INFO L442 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 38 treesize of output 40 [2019-02-28 10:55:30,317 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,341 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,365 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,392 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,396 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,398 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,400 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,402 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,405 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,409 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,412 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,414 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,416 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,418 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,420 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,422 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,425 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,429 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,431 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,440 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,441 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,442 INFO L289 Elim1Store]: Index analysis took 149 ms [2019-02-28 10:55:30,447 INFO L442 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 40 treesize of output 42 [2019-02-28 10:55:30,472 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,473 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,475 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,476 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,478 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,480 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,482 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,483 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,494 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,515 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,537 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,564 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,579 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,584 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,585 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,587 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,588 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,593 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,594 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,595 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,596 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,598 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,600 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,602 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,603 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,604 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,604 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,606 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:30,606 INFO L289 Elim1Store]: Index analysis took 140 ms [2019-02-28 10:55:30,609 INFO L442 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2019-02-28 10:55:30,610 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:30,673 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:30,819 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:30,937 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:30,989 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:31,013 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:31,034 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:31,170 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:31,710 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2019-02-28 10:55:31,711 INFO L315 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:31,723 INFO L315 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:31,749 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:31,777 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:31,823 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:31,897 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:31,968 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:32,085 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:32,230 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:32,231 INFO L209 ElimStorePlain]: Needed 17 recursive calls to eliminate 8 variables, input treesize:147, output treesize:153 [2019-02-28 10:55:32,400 WARN L181 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-02-28 10:55:32,438 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 46 [2019-02-28 10:55:32,439 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:32,636 INFO L315 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:32,637 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:127 [2019-02-28 10:55:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:32,717 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:55:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:32,809 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:55:32,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:55:32,810 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:55:32,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:55:32,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:55:32,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:55:32,811 INFO L87 Difference]: Start difference. First operand 18 states and 33 transitions. Second operand 6 states. [2019-02-28 10:55:44,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:55:44,179 INFO L93 Difference]: Finished difference Result 63 states and 92 transitions. [2019-02-28 10:55:44,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:55:44,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:55:44,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:55:44,182 INFO L225 Difference]: With dead ends: 63 [2019-02-28 10:55:44,183 INFO L226 Difference]: Without dead ends: 60 [2019-02-28 10:55:44,184 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-02-28 10:55:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-02-28 10:55:44,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 25. [2019-02-28 10:55:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-02-28 10:55:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 53 transitions. [2019-02-28 10:55:44,199 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 53 transitions. Word has length 3 [2019-02-28 10:55:44,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:55:44,200 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 53 transitions. [2019-02-28 10:55:44,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:55:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 53 transitions. [2019-02-28 10:55:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:55:44,200 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:55:44,201 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:55:44,201 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:55:44,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:44,202 INFO L82 PathProgramCache]: Analyzing trace with hash 30384, now seen corresponding path program 1 times [2019-02-28 10:55:44,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:55:44,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:44,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:44,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:44,204 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:55:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:44,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:44,318 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:55:44,319 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:55:44,319 INFO L207 CegarAbsIntRunner]: [0], [18], [35] [2019-02-28 10:55:44,323 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 10:55:44,323 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:55:44,636 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:55:44,636 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-02-28 10:55:44,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:44,637 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:55:44,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:44,637 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 [2019-02-28 10:55:44,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:44,656 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:55:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:44,670 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-02-28 10:55:44,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:55:44,689 INFO L442 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 27 treesize of output 30 [2019-02-28 10:55:44,730 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,731 INFO L442 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 30 treesize of output 32 [2019-02-28 10:55:44,757 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,758 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,760 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,761 INFO L442 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 32 treesize of output 34 [2019-02-28 10:55:44,768 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,774 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,776 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,784 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,786 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,788 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,789 INFO L442 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 34 treesize of output 36 [2019-02-28 10:55:44,807 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,812 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,819 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,820 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,820 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,821 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,822 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,823 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,824 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,826 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,827 INFO L442 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 36 treesize of output 38 [2019-02-28 10:55:44,831 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,831 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,832 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,833 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,837 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,838 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,839 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,840 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,841 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,843 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,844 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,846 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,847 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,848 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,850 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,851 INFO L442 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 38 treesize of output 40 [2019-02-28 10:55:44,855 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,856 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,857 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,858 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,859 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,860 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,861 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,863 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,864 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,865 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,867 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,868 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,869 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,871 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,872 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,873 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,875 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,876 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,877 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,878 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,880 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,882 INFO L442 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 40 treesize of output 42 [2019-02-28 10:55:44,909 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,910 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,910 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,912 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,914 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,915 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,916 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,918 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,919 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,920 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,922 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,923 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,924 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,926 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,927 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,928 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,930 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,931 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,932 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,933 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,935 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:44,989 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 42 treesize of output 62 [2019-02-28 10:55:44,991 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,009 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,034 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,053 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,069 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,088 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,107 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,126 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,246 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2019-02-28 10:55:45,247 INFO L315 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,295 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,342 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,362 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,387 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,418 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,474 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,546 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:45,547 INFO L209 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:121, output treesize:125 [2019-02-28 10:55:45,592 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2019-02-28 10:55:45,593 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:45,684 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:45,685 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:130, output treesize:98 [2019-02-28 10:55:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:45,705 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:55:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:45,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:55:45,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:55:45,737 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:55:45,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:55:45,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:55:45,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:55:45,738 INFO L87 Difference]: Start difference. First operand 25 states and 53 transitions. Second operand 6 states. [2019-02-28 10:55:46,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:55:46,731 INFO L93 Difference]: Finished difference Result 62 states and 99 transitions. [2019-02-28 10:55:46,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:55:46,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:55:46,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:55:46,734 INFO L225 Difference]: With dead ends: 62 [2019-02-28 10:55:46,734 INFO L226 Difference]: Without dead ends: 60 [2019-02-28 10:55:46,735 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-02-28 10:55:46,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-02-28 10:55:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 26. [2019-02-28 10:55:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-02-28 10:55:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 61 transitions. [2019-02-28 10:55:46,742 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 61 transitions. Word has length 3 [2019-02-28 10:55:46,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:55:46,743 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 61 transitions. [2019-02-28 10:55:46,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:55:46,743 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 61 transitions. [2019-02-28 10:55:46,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:55:46,744 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:55:46,744 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:55:46,744 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:55:46,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:46,745 INFO L82 PathProgramCache]: Analyzing trace with hash 30944, now seen corresponding path program 1 times [2019-02-28 10:55:46,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:55:46,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:46,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:46,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:46,747 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:55:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:46,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 10:55:46,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-28 10:55:46,847 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:55:46,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 10:55:46,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 10:55:46,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:55:46,848 INFO L87 Difference]: Start difference. First operand 26 states and 61 transitions. Second operand 3 states. [2019-02-28 10:55:46,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:55:46,951 INFO L93 Difference]: Finished difference Result 31 states and 61 transitions. [2019-02-28 10:55:46,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 10:55:46,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-02-28 10:55:46,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:55:46,952 INFO L225 Difference]: With dead ends: 31 [2019-02-28 10:55:46,952 INFO L226 Difference]: Without dead ends: 30 [2019-02-28 10:55:46,953 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 [2019-02-28 10:55:46,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-02-28 10:55:46,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2019-02-28 10:55:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-02-28 10:55:46,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 60 transitions. [2019-02-28 10:55:46,961 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 60 transitions. Word has length 3 [2019-02-28 10:55:46,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:55:46,961 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 60 transitions. [2019-02-28 10:55:46,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 10:55:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 60 transitions. [2019-02-28 10:55:46,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:55:46,962 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:55:46,962 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:55:46,962 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:55:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:46,963 INFO L82 PathProgramCache]: Analyzing trace with hash 30012, now seen corresponding path program 1 times [2019-02-28 10:55:46,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:55:46,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:46,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:46,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:46,964 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:55:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:47,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:47,043 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:55:47,043 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:55:47,044 INFO L207 CegarAbsIntRunner]: [0], [6], [35] [2019-02-28 10:55:47,046 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 10:55:47,046 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:55:47,444 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:55:47,445 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-02-28 10:55:47,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:47,445 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:55:47,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:47,446 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 [2019-02-28 10:55:47,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:47,462 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:55:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:47,484 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-02-28 10:55:47,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:55:47,730 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2019-02-28 10:55:47,731 INFO L315 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:47,741 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:47,750 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:47,763 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:47,784 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:47,816 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:47,862 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:47,919 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-02-28 10:55:47,940 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-02-28 10:55:47,952 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-02-28 10:55:47,970 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2019-02-28 10:55:47,982 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 20 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-02-28 10:55:47,998 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2019-02-28 10:55:48,013 INFO L442 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 40 treesize of output 42 [2019-02-28 10:55:48,544 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 42 treesize of output 62 [2019-02-28 10:55:48,546 INFO L315 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:48,748 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:48,808 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:48,825 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:48,844 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:48,861 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:48,878 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:48,896 INFO L315 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:48,969 INFO L315 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. [2019-02-28 10:55:48,969 INFO L209 ElimStorePlain]: Needed 16 recursive calls to eliminate 9 variables, input treesize:121, output treesize:125 [2019-02-28 10:55:49,036 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2019-02-28 10:55:49,037 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:49,104 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:49,105 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:130, output treesize:96 [2019-02-28 10:55:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:49,119 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:55:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:49,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-02-28 10:55:49,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 5 [2019-02-28 10:55:49,146 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:55:49,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-02-28 10:55:49,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-02-28 10:55:49,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-02-28 10:55:49,147 INFO L87 Difference]: Start difference. First operand 26 states and 60 transitions. Second operand 4 states. [2019-02-28 10:55:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:55:49,231 INFO L93 Difference]: Finished difference Result 32 states and 98 transitions. [2019-02-28 10:55:49,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-02-28 10:55:49,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-02-28 10:55:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:55:49,232 INFO L225 Difference]: With dead ends: 32 [2019-02-28 10:55:49,233 INFO L226 Difference]: Without dead ends: 31 [2019-02-28 10:55:49,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-02-28 10:55:49,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-02-28 10:55:49,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-02-28 10:55:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-02-28 10:55:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 97 transitions. [2019-02-28 10:55:49,242 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 97 transitions. Word has length 3 [2019-02-28 10:55:49,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:55:49,243 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 97 transitions. [2019-02-28 10:55:49,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-02-28 10:55:49,243 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 97 transitions. [2019-02-28 10:55:49,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:55:49,243 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:55:49,243 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:55:49,244 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:55:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:49,244 INFO L82 PathProgramCache]: Analyzing trace with hash 30136, now seen corresponding path program 1 times [2019-02-28 10:55:49,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:55:49,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:49,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:49,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:49,245 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:55:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:49,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:49,395 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:55:49,396 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:55:49,396 INFO L207 CegarAbsIntRunner]: [0], [10], [35] [2019-02-28 10:55:49,397 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 10:55:49,398 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:55:49,687 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:55:49,687 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-02-28 10:55:49,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:49,688 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:55:49,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:49,688 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 [2019-02-28 10:55:49,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:49,702 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:55:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:49,707 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-02-28 10:55:49,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:55:49,727 INFO L442 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 27 treesize of output 30 [2019-02-28 10:55:49,765 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,766 INFO L442 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 30 treesize of output 32 [2019-02-28 10:55:49,790 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,793 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,796 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,797 INFO L442 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 32 treesize of output 34 [2019-02-28 10:55:49,801 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,803 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,806 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,809 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,810 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,811 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,811 INFO L442 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 34 treesize of output 36 [2019-02-28 10:55:49,833 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,836 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,839 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,842 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,843 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,844 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,844 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,845 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,846 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,847 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,849 INFO L442 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 36 treesize of output 38 [2019-02-28 10:55:49,854 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,854 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,855 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,856 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,857 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,859 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,860 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,861 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,863 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,864 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,865 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,867 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,868 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,869 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,870 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,872 INFO L442 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 38 treesize of output 40 [2019-02-28 10:55:49,880 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,881 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,882 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,883 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,883 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,884 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,885 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,887 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,888 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,889 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,891 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,892 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,893 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,895 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,896 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,897 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,899 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,900 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,901 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,902 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,904 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,905 INFO L442 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 40 treesize of output 42 [2019-02-28 10:55:49,908 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,910 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,911 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,912 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,914 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,915 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,916 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,918 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,919 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,920 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,922 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,923 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,925 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,926 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,957 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,965 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,966 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,967 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,968 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,969 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:49,970 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:50,024 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 42 treesize of output 62 [2019-02-28 10:55:50,025 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,042 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,058 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,077 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,097 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,117 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,134 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,153 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,242 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2019-02-28 10:55:50,243 INFO L315 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,249 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,261 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,317 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,350 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,391 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,433 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,505 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:50,505 INFO L209 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:121, output treesize:125 [2019-02-28 10:55:50,551 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2019-02-28 10:55:50,552 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:50,615 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:50,616 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:130, output treesize:98 [2019-02-28 10:55:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:50,636 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:55:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:50,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:55:50,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:55:50,667 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:55:50,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:55:50,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:55:50,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:55:50,668 INFO L87 Difference]: Start difference. First operand 30 states and 97 transitions. Second operand 6 states. [2019-02-28 10:55:51,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:55:51,573 INFO L93 Difference]: Finished difference Result 65 states and 143 transitions. [2019-02-28 10:55:51,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:55:51,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:55:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:55:51,575 INFO L225 Difference]: With dead ends: 65 [2019-02-28 10:55:51,575 INFO L226 Difference]: Without dead ends: 64 [2019-02-28 10:55:51,576 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-02-28 10:55:51,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-02-28 10:55:51,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 32. [2019-02-28 10:55:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-02-28 10:55:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 115 transitions. [2019-02-28 10:55:51,586 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 115 transitions. Word has length 3 [2019-02-28 10:55:51,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:55:51,587 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 115 transitions. [2019-02-28 10:55:51,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:55:51,587 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 115 transitions. [2019-02-28 10:55:51,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:55:51,588 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:55:51,588 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:55:51,588 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:55:51,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:51,589 INFO L82 PathProgramCache]: Analyzing trace with hash 30632, now seen corresponding path program 1 times [2019-02-28 10:55:51,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:55:51,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:51,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:51,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:51,590 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:55:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:51,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:51,673 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:55:51,673 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:55:51,673 INFO L207 CegarAbsIntRunner]: [0], [26], [35] [2019-02-28 10:55:51,674 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 10:55:51,674 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:55:51,972 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:55:51,972 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-02-28 10:55:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:51,973 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:55:51,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:51,973 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-28 10:55:52,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:52,012 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:55:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:52,034 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-02-28 10:55:52,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:55:52,046 INFO L442 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 27 treesize of output 30 [2019-02-28 10:55:52,054 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,055 INFO L442 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 30 treesize of output 32 [2019-02-28 10:55:52,060 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,062 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,064 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,066 INFO L442 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 32 treesize of output 34 [2019-02-28 10:55:52,071 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,073 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,075 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,077 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,079 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,082 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,083 INFO L442 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 34 treesize of output 36 [2019-02-28 10:55:52,087 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,090 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,092 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,094 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,097 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,099 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,102 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,104 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,107 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,110 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,111 INFO L442 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 36 treesize of output 38 [2019-02-28 10:55:52,114 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,116 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,118 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,120 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,122 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,127 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,130 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,131 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,131 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,132 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,133 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,135 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,136 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,137 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,139 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,140 INFO L442 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 38 treesize of output 40 [2019-02-28 10:55:52,150 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,151 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,152 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,153 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,154 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,155 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,156 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,158 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,159 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,160 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,162 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,163 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,164 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,166 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,167 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,169 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,170 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,171 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,173 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,174 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,175 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,177 INFO L442 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 40 treesize of output 42 [2019-02-28 10:55:52,182 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,183 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,184 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,186 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,187 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,188 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,190 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,191 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,192 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,194 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,195 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,196 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,198 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,199 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,201 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,202 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,203 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,205 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,206 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,207 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,209 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:52,285 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 42 treesize of output 62 [2019-02-28 10:55:52,287 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,379 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,398 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,419 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,438 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,458 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,477 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,497 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,584 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2019-02-28 10:55:52,585 INFO L315 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,590 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,605 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,632 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,654 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,689 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,736 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,834 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:52,834 INFO L209 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:121, output treesize:125 [2019-02-28 10:55:52,879 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2019-02-28 10:55:52,880 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:52,954 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:52,955 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:130, output treesize:98 [2019-02-28 10:55:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:52,973 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:55:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:53,010 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:55:53,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:55:53,010 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:55:53,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:55:53,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:55:53,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:55:53,011 INFO L87 Difference]: Start difference. First operand 32 states and 115 transitions. Second operand 6 states. [2019-02-28 10:55:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:55:53,768 INFO L93 Difference]: Finished difference Result 67 states and 161 transitions. [2019-02-28 10:55:53,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:55:53,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:55:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:55:53,770 INFO L225 Difference]: With dead ends: 67 [2019-02-28 10:55:53,770 INFO L226 Difference]: Without dead ends: 65 [2019-02-28 10:55:53,771 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-02-28 10:55:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-02-28 10:55:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 34. [2019-02-28 10:55:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-02-28 10:55:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 132 transitions. [2019-02-28 10:55:53,779 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 132 transitions. Word has length 3 [2019-02-28 10:55:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:55:53,779 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 132 transitions. [2019-02-28 10:55:53,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:55:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 132 transitions. [2019-02-28 10:55:53,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-02-28 10:55:53,780 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:55:53,780 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-02-28 10:55:53,781 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:55:53,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:53,781 INFO L82 PathProgramCache]: Analyzing trace with hash 954866, now seen corresponding path program 1 times [2019-02-28 10:55:53,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:55:53,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:53,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:53,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:55:53,782 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:55:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:53,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:53,864 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:55:53,865 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-02-28 10:55:53,865 INFO L207 CegarAbsIntRunner]: [0], [18], [32], [35] [2019-02-28 10:55:53,866 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 10:55:53,867 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:55:54,721 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:55:54,721 INFO L272 AbstractInterpreter]: Visited 4 different actions 10 times. Merged at 2 different actions 2 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 0 variables. [2019-02-28 10:55:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:55:54,721 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:55:54,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:55:54,721 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-28 10:55:54,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:55:54,731 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:55:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:55:54,737 WARN L254 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 21 conjunts are in the unsatisfiable core [2019-02-28 10:55:54,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:55:54,748 INFO L442 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 27 treesize of output 30 [2019-02-28 10:55:54,754 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,755 INFO L442 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 30 treesize of output 32 [2019-02-28 10:55:54,763 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,765 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,766 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,767 INFO L442 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 32 treesize of output 34 [2019-02-28 10:55:54,773 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,775 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,777 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,779 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,781 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,783 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,784 INFO L442 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 34 treesize of output 36 [2019-02-28 10:55:54,791 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,793 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,795 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,797 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,799 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,801 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,803 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,805 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,807 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,809 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,810 INFO L442 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 36 treesize of output 38 [2019-02-28 10:55:54,851 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,854 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,856 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,857 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,858 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,858 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,860 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,861 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,862 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,864 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,865 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,866 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,868 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,869 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,870 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,872 INFO L442 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 38 treesize of output 40 [2019-02-28 10:55:54,878 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,880 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,881 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,882 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,884 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,885 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,886 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,888 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,889 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,891 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,892 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,893 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,895 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,896 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,897 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,899 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,900 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,902 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,903 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,904 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,906 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,907 INFO L442 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 40 treesize of output 42 [2019-02-28 10:55:54,912 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,913 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,914 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,915 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,916 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,917 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,919 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,920 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,921 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,923 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,924 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,931 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,932 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,932 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,933 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,934 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,941 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,942 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,943 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,943 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,944 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,946 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,947 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,949 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,950 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,951 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,953 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,954 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:55:54,956 INFO L442 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2019-02-28 10:55:54,957 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:54,987 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,007 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,027 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,045 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,065 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,084 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,103 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,200 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2019-02-28 10:55:55,201 INFO L315 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,207 INFO L315 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,224 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,244 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,274 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,308 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,414 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,477 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,577 INFO L315 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:55,578 INFO L209 ElimStorePlain]: Needed 17 recursive calls to eliminate 7 variables, input treesize:147, output treesize:153 [2019-02-28 10:55:55,681 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 46 [2019-02-28 10:55:55,681 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:55,786 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:55,786 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:163, output treesize:127 [2019-02-28 10:55:55,970 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 53 treesize of output 55 [2019-02-28 10:55:55,971 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:55:56,549 INFO L315 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-02-28 10:55:56,549 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:137, output treesize:109 [2019-02-28 10:55:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:56,609 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:55:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:55:56,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:55:56,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2019-02-28 10:55:56,697 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:55:56,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-02-28 10:55:56,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-02-28 10:55:56,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2019-02-28 10:55:56,698 INFO L87 Difference]: Start difference. First operand 34 states and 132 transitions. Second operand 8 states. [2019-02-28 10:56:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:56:01,128 INFO L93 Difference]: Finished difference Result 82 states and 191 transitions. [2019-02-28 10:56:01,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-02-28 10:56:01,128 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 4 [2019-02-28 10:56:01,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:56:01,130 INFO L225 Difference]: With dead ends: 82 [2019-02-28 10:56:01,130 INFO L226 Difference]: Without dead ends: 80 [2019-02-28 10:56:01,131 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2019-02-28 10:56:01,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-02-28 10:56:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 36. [2019-02-28 10:56:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-02-28 10:56:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 128 transitions. [2019-02-28 10:56:01,140 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 128 transitions. Word has length 4 [2019-02-28 10:56:01,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:56:01,140 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 128 transitions. [2019-02-28 10:56:01,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-02-28 10:56:01,140 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 128 transitions. [2019-02-28 10:56:01,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-02-28 10:56:01,141 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:56:01,141 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-02-28 10:56:01,141 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:56:01,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:56:01,142 INFO L82 PathProgramCache]: Analyzing trace with hash 955426, now seen corresponding path program 1 times [2019-02-28 10:56:01,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:56:01,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:56:01,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:56:01,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:56:01,143 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:56:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:56:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:56:01,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:56:01,265 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:56:01,265 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-02-28 10:56:01,265 INFO L207 CegarAbsIntRunner]: [0], [32], [36], [37] [2019-02-28 10:56:01,266 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 10:56:01,267 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:56:03,056 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:56:03,057 INFO L272 AbstractInterpreter]: Visited 4 different actions 12 times. Merged at 1 different actions 4 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 2 different actions. Largest state had 0 variables. [2019-02-28 10:56:03,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:56:03,057 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:56:03,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:56:03,057 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-28 10:56:03,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:56:03,066 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:56:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:56:03,073 WARN L254 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 13 conjunts are in the unsatisfiable core [2019-02-28 10:56:03,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:56:03,169 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2019-02-28 10:56:03,169 INFO L315 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,183 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,209 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,241 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,294 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,357 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,601 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-02-28 10:56:03,615 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 35 [2019-02-28 10:56:03,637 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2019-02-28 10:56:03,691 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 17 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2019-02-28 10:56:03,699 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2019-02-28 10:56:03,706 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2019-02-28 10:56:03,725 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2019-02-28 10:56:03,785 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 42 treesize of output 62 [2019-02-28 10:56:03,787 INFO L315 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,802 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,819 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,835 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,852 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,869 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,901 INFO L315 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,916 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:56:03,984 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:56:03,985 INFO L209 ElimStorePlain]: Needed 15 recursive calls to eliminate 8 variables, input treesize:113, output treesize:121 [2019-02-28 10:56:04,829 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 51 treesize of output 95 [2019-02-28 10:56:04,830 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2019-02-28 10:56:04,862 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 128 xjuncts. [2019-02-28 10:56:05,943 INFO L315 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 54 dim-0 vars, and 9 xjuncts. [2019-02-28 10:56:05,943 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:131, output treesize:1043