java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/insertion_sort_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 15:45:52,549 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 15:45:52,553 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 15:45:52,570 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 15:45:52,571 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 15:45:52,573 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 15:45:52,574 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 15:45:52,579 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 15:45:52,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 15:45:52,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 15:45:52,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 15:45:52,587 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 15:45:52,588 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 15:45:52,589 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 15:45:52,597 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 15:45:52,602 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 15:45:52,603 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 15:45:52,610 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 15:45:52,612 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 15:45:52,616 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 15:45:52,617 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 15:45:52,621 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 15:45:52,624 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 15:45:52,626 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 15:45:52,626 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 15:45:52,627 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 15:45:52,629 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 15:45:52,630 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 15:45:52,631 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 15:45:52,634 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 15:45:52,634 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 15:45:52,636 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-14 15:45:52,642 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 15:45:52,673 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 15:45:52,674 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 15:45:52,675 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 15:45:52,675 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 15:45:52,676 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 15:45:52,676 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 15:45:52,676 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 15:45:52,679 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 15:45:52,680 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 15:45:52,680 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 15:45:52,680 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 15:45:52,681 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 15:45:52,683 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 15:45:52,683 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 15:45:52,683 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 15:45:52,684 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 15:45:52,685 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 15:45:52,685 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 15:45:52,685 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 15:45:52,685 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 15:45:52,686 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 15:45:52,686 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 15:45:52,686 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 15:45:52,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:45:52,687 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 15:45:52,687 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 15:45:52,687 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 15:45:52,688 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 15:45:52,688 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 15:45:52,688 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 15:45:52,688 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 15:45:52,689 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 15:45:52,689 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 15:45:52,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 15:45:52,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 15:45:52,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 15:45:52,787 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 15:45:52,787 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 15:45:52,788 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/insertion_sort_true-unreach-call_true-termination.i [2018-09-14 15:45:53,176 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245545090/53db176b982742a5ab65c959cae662ac/FLAG7303bf40b [2018-09-14 15:45:53,326 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 15:45:53,327 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort_true-unreach-call_true-termination.i [2018-09-14 15:45:53,332 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245545090/53db176b982742a5ab65c959cae662ac/FLAG7303bf40b [2018-09-14 15:45:53,348 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245545090/53db176b982742a5ab65c959cae662ac [2018-09-14 15:45:53,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 15:45:53,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 15:45:53,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 15:45:53,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 15:45:53,370 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 15:45:53,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:45:53" (1/1) ... [2018-09-14 15:45:53,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f06a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53, skipping insertion in model container [2018-09-14 15:45:53,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:45:53" (1/1) ... [2018-09-14 15:45:53,388 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 15:45:53,597 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:45:53,616 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 15:45:53,627 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:45:53,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53 WrapperNode [2018-09-14 15:45:53,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 15:45:53,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 15:45:53,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 15:45:53,646 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 15:45:53,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53" (1/1) ... [2018-09-14 15:45:53,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53" (1/1) ... [2018-09-14 15:45:53,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 15:45:53,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 15:45:53,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 15:45:53,674 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 15:45:53,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53" (1/1) ... [2018-09-14 15:45:53,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53" (1/1) ... [2018-09-14 15:45:53,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53" (1/1) ... [2018-09-14 15:45:53,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53" (1/1) ... [2018-09-14 15:45:53,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53" (1/1) ... [2018-09-14 15:45:53,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53" (1/1) ... [2018-09-14 15:45:53,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53" (1/1) ... [2018-09-14 15:45:53,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 15:45:53,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 15:45:53,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 15:45:53,715 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 15:45:53,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:45:53,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 15:45:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 15:45:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 15:45:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 15:45:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 15:45:53,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 15:45:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-14 15:45:53,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-14 15:45:54,284 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 15:45:54,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:45:54 BoogieIcfgContainer [2018-09-14 15:45:54,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 15:45:54,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 15:45:54,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 15:45:54,290 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 15:45:54,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 03:45:53" (1/3) ... [2018-09-14 15:45:54,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b8c49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:45:54, skipping insertion in model container [2018-09-14 15:45:54,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:53" (2/3) ... [2018-09-14 15:45:54,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b8c49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:45:54, skipping insertion in model container [2018-09-14 15:45:54,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:45:54" (3/3) ... [2018-09-14 15:45:54,294 INFO L112 eAbstractionObserver]: Analyzing ICFG insertion_sort_true-unreach-call_true-termination.i [2018-09-14 15:45:54,304 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 15:45:54,311 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 15:45:54,360 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 15:45:54,361 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 15:45:54,361 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 15:45:54,361 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 15:45:54,361 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 15:45:54,361 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 15:45:54,362 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 15:45:54,362 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 15:45:54,362 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 15:45:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-09-14 15:45:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-14 15:45:54,388 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:45:54,390 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:45:54,391 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:45:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1423139162, now seen corresponding path program 1 times [2018-09-14 15:45:54,399 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:45:54,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:54,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:45:54,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:54,449 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:45:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:45:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:54,519 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:45:54,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-14 15:45:54,520 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:45:54,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-14 15:45:54,541 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-14 15:45:54,542 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:45:54,545 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-09-14 15:45:54,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:45:54,570 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2018-09-14 15:45:54,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 15:45:54,572 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-09-14 15:45:54,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:45:54,584 INFO L225 Difference]: With dead ends: 49 [2018-09-14 15:45:54,585 INFO L226 Difference]: Without dead ends: 22 [2018-09-14 15:45:54,591 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:45:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-14 15:45:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-14 15:45:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-14 15:45:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-09-14 15:45:54,627 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2018-09-14 15:45:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:45:54,628 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-09-14 15:45:54,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-14 15:45:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-09-14 15:45:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-14 15:45:54,629 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:45:54,629 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:45:54,630 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:45:54,630 INFO L82 PathProgramCache]: Analyzing trace with hash 682385334, now seen corresponding path program 1 times [2018-09-14 15:45:54,630 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:45:54,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:54,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:45:54,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:54,632 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:45:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:45:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:54,815 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:45:54,816 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 15:45:54,816 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:45:54,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 15:45:54,818 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 15:45:54,818 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 15:45:54,819 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2018-09-14 15:45:55,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:45:55,013 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-09-14 15:45:55,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:45:55,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-09-14 15:45:55,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:45:55,015 INFO L225 Difference]: With dead ends: 41 [2018-09-14 15:45:55,015 INFO L226 Difference]: Without dead ends: 28 [2018-09-14 15:45:55,016 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-14 15:45:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-14 15:45:55,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-09-14 15:45:55,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-14 15:45:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-09-14 15:45:55,022 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2018-09-14 15:45:55,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:45:55,023 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-09-14 15:45:55,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 15:45:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-09-14 15:45:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-14 15:45:55,024 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:45:55,024 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:45:55,024 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:45:55,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2108313333, now seen corresponding path program 1 times [2018-09-14 15:45:55,025 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:45:55,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:55,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:45:55,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:55,026 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:45:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:45:55,504 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-09-14 15:45:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:55,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:45:55,654 INFO L197 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 [2018-09-14 15:45:55,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:45:55,670 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:45:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:45:55,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:45:55,881 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-09-14 15:45:55,912 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:45:55,923 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2018-09-14 15:45:55,924 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:55,976 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-14 15:45:55,977 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:16 [2018-09-14 15:45:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:56,101 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:45:56,846 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2018-09-14 15:45:56,853 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:56,855 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-09-14 15:45:56,857 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:56,862 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:56,863 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-09-14 15:45:56,865 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:56,870 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2018-09-14 15:45:56,871 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:56,923 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:56,941 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2018-09-14 15:45:56,943 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-09-14 15:45:56,951 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:45:56,952 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:45, output treesize:3 [2018-09-14 15:45:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:57,009 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:45:57,010 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:45:57,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:45:57,034 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:45:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:45:57,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:45:57,096 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:45:57,100 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2018-09-14 15:45:57,100 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:57,119 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-14 15:45:57,120 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:16 [2018-09-14 15:45:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:57,167 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:45:57,310 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2018-09-14 15:45:57,314 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2018-09-14 15:45:57,315 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:57,327 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:57,328 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-09-14 15:45:57,329 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:57,348 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:57,350 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-09-14 15:45:57,351 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:57,427 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:57,434 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2018-09-14 15:45:57,437 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-09-14 15:45:57,474 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:45:57,475 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:45, output treesize:3 [2018-09-14 15:45:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:57,498 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:45:57,499 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 9, 9] total 16 [2018-09-14 15:45:57,499 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:45:57,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 15:45:57,500 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 15:45:57,501 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-09-14 15:45:57,501 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 13 states. [2018-09-14 15:45:57,728 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-09-14 15:45:57,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:45:57,949 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2018-09-14 15:45:57,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 15:45:57,951 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-09-14 15:45:57,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:45:57,954 INFO L225 Difference]: With dead ends: 52 [2018-09-14 15:45:57,955 INFO L226 Difference]: Without dead ends: 50 [2018-09-14 15:45:57,956 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-09-14 15:45:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-14 15:45:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2018-09-14 15:45:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-14 15:45:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-09-14 15:45:57,968 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 20 [2018-09-14 15:45:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:45:57,969 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-09-14 15:45:57,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 15:45:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-09-14 15:45:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-14 15:45:57,970 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:45:57,970 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:45:57,970 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:45:57,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1656387099, now seen corresponding path program 1 times [2018-09-14 15:45:57,971 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:45:57,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:57,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:45:57,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:57,973 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:45:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:45:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:58,275 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:45:58,275 INFO L197 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 [2018-09-14 15:45:58,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:45:58,284 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:45:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:45:58,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:45:58,446 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:45:58,448 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-09-14 15:45:58,448 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:58,463 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:45:58,463 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:29 [2018-09-14 15:45:58,506 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:45:58,508 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:45:58,509 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2018-09-14 15:45:58,511 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:58,526 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-14 15:45:58,526 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:22 [2018-09-14 15:45:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:58,589 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:45:58,666 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,667 INFO L477 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 34 treesize of output 35 [2018-09-14 15:45:58,724 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,725 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,726 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,729 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,738 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,744 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 43 [2018-09-14 15:45:58,749 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-09-14 15:45:58,774 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,775 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,778 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,779 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,786 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,789 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2018-09-14 15:45:58,790 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:58,795 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,796 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,797 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:58,803 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2018-09-14 15:45:58,804 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:58,854 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:45:58,858 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:45:58,859 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:38, output treesize:8 [2018-09-14 15:45:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:58,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:45:58,925 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:45:58,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:45:58,943 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:45:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:45:58,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:45:58,982 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:45:58,984 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 21 [2018-09-14 15:45:58,984 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:59,003 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-14 15:45:59,003 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:26 [2018-09-14 15:45:59,195 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:45:59,218 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:45:59,220 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:45:59,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 47 [2018-09-14 15:45:59,237 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-09-14 15:45:59,301 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-09-14 15:45:59,301 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:47 [2018-09-14 15:45:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:59,470 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:45:59,485 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,487 INFO L477 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 38 treesize of output 39 [2018-09-14 15:45:59,571 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,572 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,572 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,573 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,573 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,574 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,577 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 44 [2018-09-14 15:45:59,581 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:59,586 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,587 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,588 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,593 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,597 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,605 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 48 [2018-09-14 15:45:59,608 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-09-14 15:45:59,613 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,614 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,615 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,616 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,618 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 36 [2018-09-14 15:45:59,619 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:59,622 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,623 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,624 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,625 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,626 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,627 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,630 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,631 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 44 [2018-09-14 15:45:59,633 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:59,639 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,640 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,642 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,649 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2018-09-14 15:45:59,650 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:59,653 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,654 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,655 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,659 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,664 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,672 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 48 [2018-09-14 15:45:59,674 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-09-14 15:45:59,680 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,681 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,682 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,683 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,684 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,685 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,690 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:45:59,691 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 47 [2018-09-14 15:45:59,692 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-09-14 15:45:59,730 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-09-14 15:45:59,965 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-09-14 15:45:59,965 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 3 variables, input treesize:48, output treesize:22 [2018-09-14 15:45:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:45:59,992 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:45:59,993 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 9, 9] total 23 [2018-09-14 15:45:59,993 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:45:59,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 15:45:59,993 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 15:45:59,994 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2018-09-14 15:45:59,994 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 13 states. [2018-09-14 15:46:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:46:00,365 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2018-09-14 15:46:00,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 15:46:00,370 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2018-09-14 15:46:00,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:46:00,374 INFO L225 Difference]: With dead ends: 81 [2018-09-14 15:46:00,374 INFO L226 Difference]: Without dead ends: 64 [2018-09-14 15:46:00,375 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2018-09-14 15:46:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-14 15:46:00,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 40. [2018-09-14 15:46:00,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-14 15:46:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-09-14 15:46:00,385 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 22 [2018-09-14 15:46:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:46:00,386 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-09-14 15:46:00,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 15:46:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-09-14 15:46:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-14 15:46:00,387 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:46:00,387 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:46:00,388 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:46:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1569722720, now seen corresponding path program 2 times [2018-09-14 15:46:00,388 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:46:00,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:00,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:46:00,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:00,390 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:46:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:00,736 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:00,736 INFO L197 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 [2018-09-14 15:46:00,753 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:46:00,754 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:46:00,787 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:46:00,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:46:00,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:00,888 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:00,893 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2018-09-14 15:46:00,894 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:00,902 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:00,902 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:16 [2018-09-14 15:46:00,951 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:00,952 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:00,953 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:00,958 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 31 [2018-09-14 15:46:00,959 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:01,005 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-14 15:46:01,005 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:14 [2018-09-14 15:46:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:01,065 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:09,223 WARN L178 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 15:46:11,269 WARN L979 $PredicateComparison]: unable to prove that (forall ((main_~key~0 Int)) (let ((.cse0 (store c_main_~v~0 c_main_~j~0 main_~key~0))) (<= (select .cse0 0) (select .cse0 1)))) is different from false [2018-09-14 15:46:13,298 WARN L979 $PredicateComparison]: unable to prove that (forall ((main_~key~0 Int)) (let ((.cse0 (store c_main_~v~0 (+ c_main_~j~0 1) main_~key~0))) (<= (select .cse0 0) (select .cse0 1)))) is different from false [2018-09-14 15:46:21,456 WARN L178 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 15:46:23,633 WARN L178 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 21 [2018-09-14 15:46:23,682 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2018-09-14 15:46:23,825 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-09-14 15:46:23,833 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:23,834 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-09-14 15:46:23,834 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:23,836 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:23,837 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-09-14 15:46:23,837 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:23,857 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:23,858 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2018-09-14 15:46:23,859 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:23,871 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:23,872 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 16 [2018-09-14 15:46:23,872 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:23,890 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2018-09-14 15:46:23,891 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:23,901 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2018-09-14 15:46:23,902 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:23,911 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:23,912 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2018-09-14 15:46:23,912 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:23,916 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:23,929 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:23,933 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2018-09-14 15:46:23,998 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:23,998 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,000 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,004 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 34 [2018-09-14 15:46:24,004 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:24,006 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,007 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,008 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,016 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,023 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 44 [2018-09-14 15:46:24,026 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:24,029 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,030 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,031 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,040 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,046 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 42 [2018-09-14 15:46:24,048 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:24,050 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,053 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25 [2018-09-14 15:46:24,053 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:24,058 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,058 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,061 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,069 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,084 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 49 [2018-09-14 15:46:24,088 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 4 xjuncts. [2018-09-14 15:46:24,121 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,134 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,189 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,212 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,212 INFO L303 Elim1Store]: Index analysis took 122 ms [2018-09-14 15:46:24,223 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 47 [2018-09-14 15:46:24,229 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 4 xjuncts. [2018-09-14 15:46:24,254 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,268 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,276 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:24,296 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2018-09-14 15:46:24,297 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:24,329 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:24,333 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:24,334 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 4 variables, input treesize:69, output treesize:5 [2018-09-14 15:46:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2018-09-14 15:46:24,374 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:24,374 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:46:24,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:46:24,391 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:46:24,428 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:46:24,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:46:24,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:24,518 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:24,521 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2018-09-14 15:46:24,522 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:24,531 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:24,532 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:16 [2018-09-14 15:46:24,632 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:24,634 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:24,639 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 27 [2018-09-14 15:46:24,641 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:24,760 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:24,761 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2018-09-14 15:46:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:24,781 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:32,516 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,519 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2018-09-14 15:46:32,602 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,603 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,605 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,612 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 47 [2018-09-14 15:46:32,631 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2018-09-14 15:46:32,633 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,634 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,636 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,644 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,655 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 47 [2018-09-14 15:46:32,659 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2018-09-14 15:46:32,668 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,686 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 39 [2018-09-14 15:46:32,688 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-09-14 15:46:32,690 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,691 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,695 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,702 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 49 [2018-09-14 15:46:32,721 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-09-14 15:46:32,723 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,740 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 34 [2018-09-14 15:46:32,743 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-09-14 15:46:32,758 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,758 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,763 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,770 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,839 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 49 [2018-09-14 15:46:32,842 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-09-14 15:46:32,845 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,846 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,851 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,865 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:32,881 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 50 [2018-09-14 15:46:32,884 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-09-14 15:46:33,026 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-09-14 15:46:33,083 INFO L477 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 34 treesize of output 32 [2018-09-14 15:46:33,235 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-09-14 15:46:33,238 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:33,240 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-09-14 15:46:33,241 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:33,245 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:33,252 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:33,260 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2018-09-14 15:46:33,262 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:33,280 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2018-09-14 15:46:33,281 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:33,284 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:33,291 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:33,306 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2018-09-14 15:46:33,307 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:33,309 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:33,336 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:33,340 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 31 [2018-09-14 15:46:33,341 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:33,343 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:33,347 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:33,352 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2018-09-14 15:46:33,354 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:33,356 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:33,359 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:33,367 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 30 [2018-09-14 15:46:33,367 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:33,475 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-09-14 15:46:33,537 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-09-14 15:46:33,537 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 8 variables, input treesize:71, output treesize:33 [2018-09-14 15:46:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:33,626 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:46:33,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12] total 29 [2018-09-14 15:46:33,626 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:46:33,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-14 15:46:33,627 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-14 15:46:33,627 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=591, Unknown=9, NotChecked=102, Total=812 [2018-09-14 15:46:33,627 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 17 states. [2018-09-14 15:46:34,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:46:34,199 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2018-09-14 15:46:34,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 15:46:34,199 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 26 [2018-09-14 15:46:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:46:34,202 INFO L225 Difference]: With dead ends: 99 [2018-09-14 15:46:34,202 INFO L226 Difference]: Without dead ends: 97 [2018-09-14 15:46:34,203 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 74 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=198, Invalid=923, Unknown=9, NotChecked=130, Total=1260 [2018-09-14 15:46:34,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-14 15:46:34,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 46. [2018-09-14 15:46:34,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-09-14 15:46:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2018-09-14 15:46:34,213 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 26 [2018-09-14 15:46:34,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:46:34,213 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2018-09-14 15:46:34,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-14 15:46:34,214 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2018-09-14 15:46:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-14 15:46:34,214 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:46:34,215 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:46:34,215 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:46:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1975775309, now seen corresponding path program 1 times [2018-09-14 15:46:34,215 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:46:34,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:34,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:46:34,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:34,217 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:46:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:34,469 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:34,469 INFO L197 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 [2018-09-14 15:46:34,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:46:34,479 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:46:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:34,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:34,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:36,968 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:36,969 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:46:36,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:46:36,984 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:46:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:37,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:37,039 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:37,212 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:46:37,213 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 12 [2018-09-14 15:46:37,213 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:46:37,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 15:46:37,214 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 15:46:37,214 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=100, Unknown=1, NotChecked=0, Total=132 [2018-09-14 15:46:37,214 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 9 states. [2018-09-14 15:46:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:46:37,348 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2018-09-14 15:46:37,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 15:46:37,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-09-14 15:46:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:46:37,349 INFO L225 Difference]: With dead ends: 75 [2018-09-14 15:46:37,349 INFO L226 Difference]: Without dead ends: 58 [2018-09-14 15:46:37,350 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 97 SyntacticMatches, 11 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=54, Invalid=155, Unknown=1, NotChecked=0, Total=210 [2018-09-14 15:46:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-14 15:46:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2018-09-14 15:46:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-14 15:46:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2018-09-14 15:46:37,358 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 28 [2018-09-14 15:46:37,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:46:37,358 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2018-09-14 15:46:37,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 15:46:37,358 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2018-09-14 15:46:37,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-14 15:46:37,359 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:46:37,359 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:46:37,360 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:46:37,360 INFO L82 PathProgramCache]: Analyzing trace with hash 533116474, now seen corresponding path program 2 times [2018-09-14 15:46:37,360 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:46:37,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:37,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:46:37,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:37,361 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:46:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:37,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:37,595 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:46:37,602 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:46:37,603 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:46:37,615 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:46:37,615 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:46:37,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:37,687 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-09-14 15:46:37,688 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:37,691 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:37,691 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:7 [2018-09-14 15:46:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:37,716 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:37,915 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2018-09-14 15:46:37,918 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:37,919 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-09-14 15:46:37,920 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:37,922 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2018-09-14 15:46:37,922 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:37,923 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:37,924 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-09-14 15:46:37,924 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:37,970 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:37,981 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2018-09-14 15:46:37,982 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:37,988 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:37,988 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:45, output treesize:3 [2018-09-14 15:46:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:38,020 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:38,020 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:46:38,036 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:46:38,036 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:46:38,078 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:46:38,078 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:46:38,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:38,115 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-14 15:46:38,116 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:38,162 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:38,163 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:7 [2018-09-14 15:46:38,184 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:38,185 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2018-09-14 15:46:38,185 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:38,199 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:38,199 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:16 [2018-09-14 15:46:38,334 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:38,335 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:38,336 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 29 [2018-09-14 15:46:38,338 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:38,350 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:38,350 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:15 [2018-09-14 15:46:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:38,401 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:38,750 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2018-09-14 15:46:38,754 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:38,757 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:38,758 INFO L477 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 114 [2018-09-14 15:46:38,826 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:38,841 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:38,849 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:38,858 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:38,858 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:38,868 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 100 [2018-09-14 15:46:38,962 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:38,963 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:38,965 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:38,966 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-09-14 15:46:38,967 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:39,020 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,028 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,044 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,052 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,066 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,071 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,072 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,072 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,073 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,080 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,088 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 69 [2018-09-14 15:46:39,089 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:39,126 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:39,131 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:39,135 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,136 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,136 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,136 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,137 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 136 [2018-09-14 15:46:39,189 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,189 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,190 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,190 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,191 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,193 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 79 [2018-09-14 15:46:39,260 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,260 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,261 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,261 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,262 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,263 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,264 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,264 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,265 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,274 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,281 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 72 [2018-09-14 15:46:39,283 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:39,322 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:39,331 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:39,334 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,335 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,335 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,338 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 123 [2018-09-14 15:46:39,390 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,390 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,391 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,391 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,399 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,400 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,415 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 108 [2018-09-14 15:46:39,592 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2018-09-14 15:46:39,596 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,597 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,598 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-09-14 15:46:39,599 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:39,602 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,602 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,606 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,607 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2018-09-14 15:46:39,608 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:39,611 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,612 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,615 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,616 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2018-09-14 15:46:39,617 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:39,653 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,653 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,654 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,654 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,654 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,655 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,656 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,657 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:39,661 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,662 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,662 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,663 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 77 [2018-09-14 15:46:39,665 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:39,673 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,674 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,675 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,676 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,677 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,677 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,678 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,681 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,682 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,682 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,689 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,690 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,700 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,723 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 113 [2018-09-14 15:46:39,729 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 8 xjuncts. [2018-09-14 15:46:39,740 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,742 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,742 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,743 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,743 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,745 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,746 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,747 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,754 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,763 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:39,788 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 112 [2018-09-14 15:46:39,795 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 11 xjuncts. [2018-09-14 15:46:41,206 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-09-14 15:46:41,533 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-09-14 15:46:41,562 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,581 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,582 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,583 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,608 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 132 [2018-09-14 15:46:41,790 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 62 [2018-09-14 15:46:41,793 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,794 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,795 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:41,796 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,797 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,798 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,799 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,800 INFO L477 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 51 treesize of output 87 [2018-09-14 15:46:41,869 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,869 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,870 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,870 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,871 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,871 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,871 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,874 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,874 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,876 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,880 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,886 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,893 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 70 [2018-09-14 15:46:41,895 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:41,931 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:41,976 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,977 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,977 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,978 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,978 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,979 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,980 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,980 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,981 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,982 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,983 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:41,985 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 122 [2018-09-14 15:46:42,063 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,064 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,064 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,067 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,067 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,068 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,068 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,071 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,071 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,072 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,073 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,074 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,077 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,086 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,107 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 109 [2018-09-14 15:46:42,111 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 5 xjuncts. [2018-09-14 15:46:42,182 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:42,227 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,227 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,228 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,229 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,229 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,232 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 82 [2018-09-14 15:46:42,303 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,304 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,307 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,309 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,310 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,310 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,311 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,320 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,341 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 82 [2018-09-14 15:46:42,345 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 5 xjuncts. [2018-09-14 15:46:42,400 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:42,441 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-09-14 15:46:42,446 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,448 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,448 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,467 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 140 treesize of output 134 [2018-09-14 15:46:42,592 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-09-14 15:46:42,596 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,596 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,598 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:42,598 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,599 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,601 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,604 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 112 [2018-09-14 15:46:42,722 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2018-09-14 15:46:42,725 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,726 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,726 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,727 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,727 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,728 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,729 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,731 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,732 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,742 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,749 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 74 [2018-09-14 15:46:42,752 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:42,800 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,801 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,804 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,805 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-09-14 15:46:42,806 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:42,815 INFO L267 ElimStorePlain]: Start of recursive call 25: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:42,849 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,855 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,856 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,856 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,857 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,861 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,862 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:42,913 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 68 treesize of output 118 [2018-09-14 15:46:43,144 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2018-09-14 15:46:43,152 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,154 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,159 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,160 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,161 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,162 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,163 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,166 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,167 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,168 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,169 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,177 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,190 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,225 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 115 [2018-09-14 15:46:43,232 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 11 xjuncts. [2018-09-14 15:46:43,404 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,405 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,406 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,406 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,407 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,410 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,411 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,412 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,413 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,426 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,437 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 72 [2018-09-14 15:46:43,438 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:43,472 INFO L267 ElimStorePlain]: Start of recursive call 28: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:43,482 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:43,485 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,487 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,488 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,491 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 135 [2018-09-14 15:46:43,621 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-09-14 15:46:43,625 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,625 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,626 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,626 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,627 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,631 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,632 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,635 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 119 [2018-09-14 15:46:43,784 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2018-09-14 15:46:43,787 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,787 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,791 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,792 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-09-14 15:46:43,793 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:43,822 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,823 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,824 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,824 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,825 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,827 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,828 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,829 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,830 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,835 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,842 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,871 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 72 [2018-09-14 15:46:43,872 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:43,917 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:43,961 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,962 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,962 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,963 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,964 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,966 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,967 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,968 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,969 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:43,977 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 108 [2018-09-14 15:46:44,109 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 28 [2018-09-14 15:46:44,114 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,115 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,119 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,120 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,121 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,122 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,124 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,125 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,126 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,128 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,132 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,144 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,200 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 111 [2018-09-14 15:46:44,220 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 10 xjuncts. [2018-09-14 15:46:44,288 INFO L267 ElimStorePlain]: Start of recursive call 35: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:44,300 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:44,310 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,310 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,311 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:44,313 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,316 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 105 [2018-09-14 15:46:44,366 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,367 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,368 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:44,368 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,386 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,404 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,406 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 96 [2018-09-14 15:46:44,505 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,505 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,508 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,509 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-09-14 15:46:44,510 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:44,526 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,527 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,527 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,527 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,528 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,528 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,529 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,532 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,533 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,541 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:44,588 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 68 [2018-09-14 15:46:44,589 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:44,621 INFO L267 ElimStorePlain]: Start of recursive call 38: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:44,627 INFO L267 ElimStorePlain]: Start of recursive call 37: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:44,664 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-09-14 15:46:44,664 INFO L202 ElimStorePlain]: Needed 40 recursive calls to eliminate 2 variables, input treesize:121, output treesize:38 [2018-09-14 15:46:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:44,831 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:46:44,831 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11, 12, 13] total 27 [2018-09-14 15:46:44,831 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:46:44,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 15:46:44,832 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 15:46:44,832 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2018-09-14 15:46:44,832 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 13 states. [2018-09-14 15:46:45,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:46:45,434 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2018-09-14 15:46:45,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-14 15:46:45,435 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2018-09-14 15:46:45,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:46:45,437 INFO L225 Difference]: With dead ends: 114 [2018-09-14 15:46:45,437 INFO L226 Difference]: Without dead ends: 112 [2018-09-14 15:46:45,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 88 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=271, Invalid=1451, Unknown=0, NotChecked=0, Total=1722 [2018-09-14 15:46:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-09-14 15:46:45,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 60. [2018-09-14 15:46:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-14 15:46:45,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-14 15:46:45,449 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 28 [2018-09-14 15:46:45,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:46:45,450 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-14 15:46:45,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 15:46:45,450 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-14 15:46:45,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-14 15:46:45,451 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:46:45,451 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:46:45,451 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:46:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash -601080838, now seen corresponding path program 3 times [2018-09-14 15:46:45,452 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:46:45,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:45,453 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:46:45,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:45,453 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:46:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:45,907 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-14 15:46:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:46,147 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:46,147 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:46:46,154 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-14 15:46:46,154 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-14 15:46:46,167 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-14 15:46:46,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:46:46,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:46,174 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:46,174 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 25 [2018-09-14 15:46:46,175 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:46,183 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:46,184 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:27 [2018-09-14 15:46:46,208 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:46,211 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:46,212 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2018-09-14 15:46:46,213 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:46,226 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:46,227 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2018-09-14 15:46:46,267 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:46,268 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:46,272 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:46,275 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 37 [2018-09-14 15:46:46,276 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:46,284 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:46,285 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:9 [2018-09-14 15:46:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:46,335 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:46,413 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:46,414 INFO L477 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 34 treesize of output 35 [2018-09-14 15:46:47,121 WARN L178 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2018-09-14 15:46:47,124 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:47,124 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:47,125 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:47,131 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:47,137 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 40 [2018-09-14 15:46:47,139 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:47,140 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:47,141 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:47,143 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:47,149 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:47,162 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 48 [2018-09-14 15:46:47,164 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2018-09-14 15:46:47,165 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:47,166 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:47,166 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:47,168 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2018-09-14 15:46:47,169 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:47,187 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:47,189 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:47,189 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:34, output treesize:3 [2018-09-14 15:46:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-14 15:46:47,226 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:47,226 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:46:47,241 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-14 15:46:47,242 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-14 15:46:47,308 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-14 15:46:47,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:46:47,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:47,352 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:47,353 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-09-14 15:46:47,353 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:47,366 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:47,366 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:32 [2018-09-14 15:46:47,382 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:47,384 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:47,384 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2018-09-14 15:46:47,385 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:47,395 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:47,395 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2018-09-14 15:46:47,450 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:47,451 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:47,452 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:47,455 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 37 [2018-09-14 15:46:47,456 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:47,467 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:47,467 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:9 [2018-09-14 15:46:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:47,472 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:53,850 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,851 INFO L477 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 44 treesize of output 45 [2018-09-14 15:46:53,866 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,867 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,868 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2018-09-14 15:46:53,932 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,933 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,933 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,935 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,936 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,942 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,948 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 47 [2018-09-14 15:46:53,949 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:53,958 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,960 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,973 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 42 [2018-09-14 15:46:53,976 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 3 xjuncts. [2018-09-14 15:46:53,981 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,981 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,982 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,984 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,985 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,991 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:53,997 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 48 [2018-09-14 15:46:53,998 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:54,007 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,007 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,008 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,009 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,009 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,014 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 47 [2018-09-14 15:46:54,022 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:54,058 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,071 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,080 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,115 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,117 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,126 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,127 INFO L303 Elim1Store]: Index analysis took 103 ms [2018-09-14 15:46:54,131 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 45 [2018-09-14 15:46:54,133 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:54,134 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,135 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,135 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,137 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,137 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,143 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,150 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 45 [2018-09-14 15:46:54,151 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:54,153 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,154 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,155 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:54,164 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2018-09-14 15:46:54,165 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:54,231 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-09-14 15:46:54,261 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-09-14 15:46:54,295 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-09-14 15:46:54,296 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 4 variables, input treesize:51, output treesize:50 [2018-09-14 15:46:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:54,371 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:46:54,371 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 9, 12, 12] total 31 [2018-09-14 15:46:54,371 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:46:54,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-14 15:46:54,372 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-14 15:46:54,372 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=787, Unknown=2, NotChecked=0, Total=930 [2018-09-14 15:46:54,372 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 19 states. [2018-09-14 15:46:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:46:54,656 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2018-09-14 15:46:54,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-14 15:46:54,656 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2018-09-14 15:46:54,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:46:54,658 INFO L225 Difference]: With dead ends: 89 [2018-09-14 15:46:54,658 INFO L226 Difference]: Without dead ends: 87 [2018-09-14 15:46:54,659 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 88 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=189, Invalid=999, Unknown=2, NotChecked=0, Total=1190 [2018-09-14 15:46:54,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-14 15:46:54,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 54. [2018-09-14 15:46:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-14 15:46:54,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-09-14 15:46:54,667 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 28 [2018-09-14 15:46:54,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:46:54,667 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-09-14 15:46:54,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-14 15:46:54,667 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-09-14 15:46:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-14 15:46:54,668 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:46:54,669 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:46:54,669 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:46:54,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1568014508, now seen corresponding path program 4 times [2018-09-14 15:46:54,669 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:46:54,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:54,670 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:46:54,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:54,670 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:46:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:54,975 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:54,975 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:46:54,983 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-14 15:46:54,983 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-14 15:46:54,995 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-14 15:46:54,996 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:46:54,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:55,013 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:55,014 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-09-14 15:46:55,014 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,024 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,024 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:29 [2018-09-14 15:46:55,050 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:55,051 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:55,051 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2018-09-14 15:46:55,052 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,063 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-14 15:46:55,064 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:22 [2018-09-14 15:46:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:55,162 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:55,226 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,227 INFO L477 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 34 treesize of output 35 [2018-09-14 15:46:55,313 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,313 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,314 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,316 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2018-09-14 15:46:55,317 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,319 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,319 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,320 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,320 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,325 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,326 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2018-09-14 15:46:55,327 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,329 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,329 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,329 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,331 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,337 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:46:55,343 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 43 [2018-09-14 15:46:55,344 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:55,357 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,362 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,362 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:38, output treesize:8 [2018-09-14 15:46:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:55,412 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:55,412 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:46:55,431 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-14 15:46:55,431 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-14 15:46:55,531 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-14 15:46:55,532 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:46:55,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:55,588 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-09-14 15:46:55,588 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,596 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,596 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:7 [2018-09-14 15:46:55,640 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:55,641 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 20 [2018-09-14 15:46:55,641 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,647 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,648 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2018-09-14 15:46:55,674 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:55,674 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:55,675 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:55,680 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 42 [2018-09-14 15:46:55,680 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:46:55,694 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-14 15:46:55,694 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:26 [2018-09-14 15:46:55,754 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:55,755 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:55,757 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:46:55,767 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 51 [2018-09-14 15:46:55,768 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-09-14 15:46:55,807 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-09-14 15:46:55,808 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:47 [2018-09-14 15:46:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:46:55,957 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:47:14,109 WARN L178 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 26 [2018-09-14 15:47:14,160 INFO L477 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 89 treesize of output 72 [2018-09-14 15:47:14,175 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,180 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 62 [2018-09-14 15:47:14,186 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,186 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,187 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,206 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 75 [2018-09-14 15:47:14,370 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-09-14 15:47:14,380 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,381 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,381 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,382 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,383 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,383 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,384 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,385 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,386 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,393 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,400 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 108 [2018-09-14 15:47:14,444 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 9 xjuncts. [2018-09-14 15:47:14,460 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,461 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,462 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,462 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,463 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,464 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,469 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 82 [2018-09-14 15:47:14,718 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 5 xjuncts. [2018-09-14 15:47:14,844 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,862 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,870 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,883 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,895 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:14,908 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,091 INFO L303 Elim1Store]: Index analysis took 371 ms [2018-09-14 15:47:15,115 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 82 [2018-09-14 15:47:15,118 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 8 xjuncts. [2018-09-14 15:47:15,127 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,127 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,128 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,129 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,129 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,130 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,131 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,131 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,132 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,139 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,146 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,169 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 109 [2018-09-14 15:47:15,174 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 9 xjuncts. [2018-09-14 15:47:15,181 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,181 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,182 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,183 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,183 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,185 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,186 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,187 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,203 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,233 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 112 [2018-09-14 15:47:15,243 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 21 xjuncts. [2018-09-14 15:47:15,317 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,317 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,318 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,318 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,318 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,319 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,319 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,320 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,321 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,334 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,341 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,366 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 108 [2018-09-14 15:47:15,373 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 9 xjuncts. [2018-09-14 15:47:15,389 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,390 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,391 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,392 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,392 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,394 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,395 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,396 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,411 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:15,440 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 112 [2018-09-14 15:47:15,449 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 21 xjuncts. [2018-09-14 15:47:16,425 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,426 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,426 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,427 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,427 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,429 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,430 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,431 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,443 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 76 [2018-09-14 15:47:16,510 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-09-14 15:47:16,536 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,545 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,559 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,567 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,570 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,572 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 51 [2018-09-14 15:47:16,580 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:16,582 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,582 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,583 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,583 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,584 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,585 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,587 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,591 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 56 [2018-09-14 15:47:16,592 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:16,595 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,595 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,596 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,596 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,597 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,598 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,599 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,600 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,600 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,603 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,610 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:16,611 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 72 [2018-09-14 15:47:16,612 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:16,743 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-09-14 15:47:16,832 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-09-14 15:47:16,913 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-09-14 15:47:17,002 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-09-14 15:47:17,003 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 4 variables, input treesize:132, output treesize:116 [2018-09-14 15:47:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:47:17,042 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:47:17,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11, 12, 12] total 30 [2018-09-14 15:47:17,042 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:47:17,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 15:47:17,043 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 15:47:17,043 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=742, Unknown=8, NotChecked=0, Total=870 [2018-09-14 15:47:17,043 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 15 states. [2018-09-14 15:47:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:47:17,501 INFO L93 Difference]: Finished difference Result 120 states and 141 transitions. [2018-09-14 15:47:17,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 15:47:17,501 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2018-09-14 15:47:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:47:17,503 INFO L225 Difference]: With dead ends: 120 [2018-09-14 15:47:17,503 INFO L226 Difference]: Without dead ends: 103 [2018-09-14 15:47:17,504 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 92 SyntacticMatches, 13 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=252, Invalid=1300, Unknown=8, NotChecked=0, Total=1560 [2018-09-14 15:47:17,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-14 15:47:17,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 56. [2018-09-14 15:47:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-14 15:47:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-09-14 15:47:17,514 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 30 [2018-09-14 15:47:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:47:17,514 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-09-14 15:47:17,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 15:47:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-09-14 15:47:17,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-14 15:47:17,515 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:47:17,515 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:47:17,516 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:47:17,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1982187746, now seen corresponding path program 2 times [2018-09-14 15:47:17,516 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:47:17,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:47:17,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:47:17,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:47:17,517 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:47:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:47:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:47:17,795 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:47:17,796 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:47:17,803 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:47:17,803 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:47:17,814 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:47:17,814 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:47:17,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:47:17,863 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:47:17,865 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2018-09-14 15:47:17,866 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:17,874 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-14 15:47:17,874 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:16 [2018-09-14 15:47:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:47:17,976 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:47:18,244 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2018-09-14 15:47:18,253 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:18,267 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 40 [2018-09-14 15:47:18,270 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2018-09-14 15:47:18,271 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:18,273 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:18,274 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2018-09-14 15:47:18,274 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:18,276 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:18,277 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2018-09-14 15:47:18,278 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:18,280 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:18,282 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:18,282 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2018-09-14 15:47:18,283 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:18,289 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:18,297 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2018-09-14 15:47:18,298 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-09-14 15:47:18,300 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:18,302 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:18,302 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2018-09-14 15:47:18,303 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:18,311 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:18,325 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 38 [2018-09-14 15:47:18,328 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-09-14 15:47:18,334 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:18,361 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2018-09-14 15:47:18,363 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-09-14 15:47:18,427 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:47:18,427 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 4 variables, input treesize:79, output treesize:3 [2018-09-14 15:47:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:47:18,463 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:47:18,463 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:47:18,478 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:47:18,478 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:47:18,522 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:47:18,523 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:47:18,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:47:18,536 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-14 15:47:18,536 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:18,540 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:47:18,540 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:7 [2018-09-14 15:47:18,545 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:47:18,547 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2018-09-14 15:47:18,547 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:18,557 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-14 15:47:18,557 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:16 [2018-09-14 15:47:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:47:18,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:47:24,719 WARN L178 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 24 DAG size of output: 14 [2018-09-14 15:47:26,754 WARN L979 $PredicateComparison]: unable to prove that (forall ((main_~key~0 Int)) (or (< main_~key~0 (select c_main_~v~0 c_main_~j~0)) (let ((.cse0 (store c_main_~v~0 (+ c_main_~j~0 1) main_~key~0))) (<= (select .cse0 1) (select .cse0 2))))) is different from false [2018-09-14 15:47:26,789 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 42 [2018-09-14 15:47:26,901 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2018-09-14 15:47:26,904 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:26,905 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:26,907 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:26,913 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 37 [2018-09-14 15:47:26,914 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-09-14 15:47:26,915 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:26,916 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2018-09-14 15:47:26,917 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:26,918 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:26,922 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:26,927 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 34 [2018-09-14 15:47:26,928 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-09-14 15:47:26,929 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-09-14 15:47:26,930 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:26,931 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-09-14 15:47:26,931 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:26,933 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:26,936 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:26,941 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2018-09-14 15:47:26,942 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-09-14 15:47:26,944 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:26,945 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:26,946 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:26,952 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 37 [2018-09-14 15:47:26,953 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-09-14 15:47:27,024 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,039 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 34 [2018-09-14 15:47:27,040 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 4 xjuncts. [2018-09-14 15:47:27,053 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,074 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 57 [2018-09-14 15:47:27,078 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 11 xjuncts. [2018-09-14 15:47:27,137 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-09-14 15:47:27,140 INFO L477 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 34 treesize of output 32 [2018-09-14 15:47:27,204 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,209 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,222 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2018-09-14 15:47:27,223 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 2 xjuncts. [2018-09-14 15:47:27,225 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,230 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2018-09-14 15:47:27,235 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-09-14 15:47:27,237 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,238 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2018-09-14 15:47:27,239 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:27,240 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-09-14 15:47:27,241 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:27,243 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,245 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,246 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,251 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 31 [2018-09-14 15:47:27,252 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2018-09-14 15:47:27,254 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,256 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,257 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:47:27,263 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 31 [2018-09-14 15:47:27,264 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2018-09-14 15:47:27,265 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-09-14 15:47:27,265 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:27,291 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:47:27,318 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-09-14 15:47:27,318 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 4 variables, input treesize:38, output treesize:12 [2018-09-14 15:47:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 2 times theorem prover too weak. 0 trivial. 1 not checked. [2018-09-14 15:47:27,325 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:47:27,325 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13, 11, 12] total 30 [2018-09-14 15:47:27,325 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:47:27,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-14 15:47:27,325 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-14 15:47:27,326 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=709, Unknown=2, NotChecked=54, Total=870 [2018-09-14 15:47:27,326 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 21 states. [2018-09-14 15:47:27,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:47:27,803 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2018-09-14 15:47:27,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-14 15:47:27,804 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 34 [2018-09-14 15:47:27,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:47:27,805 INFO L225 Difference]: With dead ends: 85 [2018-09-14 15:47:27,806 INFO L226 Difference]: Without dead ends: 83 [2018-09-14 15:47:27,807 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 114 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=199, Invalid=1135, Unknown=2, NotChecked=70, Total=1406 [2018-09-14 15:47:27,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-14 15:47:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2018-09-14 15:47:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-09-14 15:47:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2018-09-14 15:47:27,819 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 34 [2018-09-14 15:47:27,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:47:27,819 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2018-09-14 15:47:27,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-14 15:47:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2018-09-14 15:47:27,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-14 15:47:27,821 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:47:27,821 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:47:27,822 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:47:27,822 INFO L82 PathProgramCache]: Analyzing trace with hash 539528911, now seen corresponding path program 5 times [2018-09-14 15:47:27,822 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:47:27,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:47:27,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:47:27,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:47:27,823 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:47:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:47:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:47:28,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:47:28,301 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:47:28,308 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-14 15:47:28,309 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:47:28,328 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-09-14 15:47:28,328 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:47:28,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:47:28,342 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:47:28,343 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2018-09-14 15:47:28,343 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:28,353 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:47:28,353 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:16 [2018-09-14 15:47:28,420 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:47:28,421 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:47:28,425 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 21 [2018-09-14 15:47:28,426 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:28,434 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:47:28,434 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:11 [2018-09-14 15:47:28,454 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-09-14 15:47:28,454 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:28,461 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:47:28,461 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2018-09-14 15:47:28,524 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 18 [2018-09-14 15:47:28,525 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:47:28,530 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:47:28,530 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:7 [2018-09-14 15:47:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:47:28,560 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:47:30,629 WARN L979 $PredicateComparison]: unable to prove that (forall ((main_~key~0 Int)) (let ((.cse0 (store c_main_~v~0 (+ c_main_~i~0 1) main_~key~0))) (<= (select .cse0 0) (select .cse0 1)))) is different from false [2018-09-14 15:47:37,303 WARN L979 $PredicateComparison]: unable to prove that (forall ((main_~key~0 Int)) (let ((.cse0 (store (store c_main_~v~0 (+ c_main_~j~0 1) (select c_main_~v~0 c_main_~j~0)) c_main_~j~0 main_~key~0))) (<= (select .cse0 0) (select .cse0 1)))) is different from false [2018-09-14 15:47:39,323 WARN L979 $PredicateComparison]: unable to prove that (forall ((v_subst_6 Int) (main_~key~0 Int)) (let ((.cse0 (store (let ((.cse1 (store c_main_~v~0 (+ c_main_~i~0 1) main_~key~0))) (store .cse1 (+ c_main_~j~0 1) (select .cse1 c_main_~j~0))) c_main_~j~0 v_subst_6))) (<= (select .cse0 0) (select .cse0 1)))) is different from false [2018-09-14 15:48:03,652 WARN L178 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 16 [2018-09-14 15:48:05,682 WARN L979 $PredicateComparison]: unable to prove that (forall ((v_subst_7 Int) (v_subst_6 Int)) (let ((.cse0 (let ((.cse1 (+ c_main_~j~0 1))) (store (store (store (store c_main_~v~0 (+ c_main_~i~0 1) c_main_~key~0) .cse1 v_subst_7) (+ c_main_~j~0 2) v_subst_7) .cse1 v_subst_6)))) (<= (select .cse0 0) (select .cse0 1)))) is different from false [2018-09-14 15:48:05,688 INFO L477 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 51 treesize of output 49 [2018-09-14 15:48:05,723 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2018-09-14 15:48:05,728 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,744 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 58 [2018-09-14 15:48:05,881 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-09-14 15:48:05,884 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,885 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,886 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,886 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,893 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,899 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 51 [2018-09-14 15:48:05,900 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:05,902 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,902 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,902 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,903 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,908 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,914 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2018-09-14 15:48:05,915 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:05,917 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,917 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,918 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,918 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,924 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,930 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 51 [2018-09-14 15:48:05,931 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:05,933 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-09-14 15:48:05,933 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:05,935 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,935 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,936 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,936 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,941 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:05,947 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 48 [2018-09-14 15:48:05,948 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:05,950 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-09-14 15:48:05,950 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:05,951 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-09-14 15:48:05,951 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:06,039 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,039 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,040 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,041 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,042 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:06,050 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 52 [2018-09-14 15:48:06,051 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:06,053 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,053 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,054 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,055 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,055 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,066 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 49 [2018-09-14 15:48:06,067 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:06,071 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,072 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,073 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,074 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,074 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,086 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,108 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 81 [2018-09-14 15:48:06,110 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 8 xjuncts. [2018-09-14 15:48:06,221 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-09-14 15:48:06,285 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,286 INFO L477 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 44 treesize of output 49 [2018-09-14 15:48:06,352 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,353 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,353 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,354 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,360 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,366 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 42 [2018-09-14 15:48:06,367 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:06,389 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,389 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,390 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:06,390 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2018-09-14 15:48:06,391 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:06,392 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,393 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,393 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,393 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,399 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,405 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 45 [2018-09-14 15:48:06,406 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:06,408 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,408 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,408 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,409 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,415 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,449 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 45 [2018-09-14 15:48:06,450 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:06,451 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-09-14 15:48:06,451 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:06,452 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-09-14 15:48:06,452 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:06,453 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,454 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,454 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,455 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,461 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,469 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 42 [2018-09-14 15:48:06,470 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:06,500 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-09-14 15:48:06,545 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-09-14 15:48:06,573 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-09-14 15:48:06,615 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,617 INFO L477 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 53 treesize of output 56 [2018-09-14 15:48:06,621 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,645 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 74 [2018-09-14 15:48:06,657 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,658 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:06,660 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 60 [2018-09-14 15:48:06,746 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,747 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,749 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,754 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,766 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 50 [2018-09-14 15:48:06,769 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 3 xjuncts. [2018-09-14 15:48:06,771 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,772 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,773 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,773 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,779 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,785 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 45 [2018-09-14 15:48:06,786 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:06,787 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-09-14 15:48:06,787 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:06,789 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,789 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,791 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,791 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,797 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,802 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 42 [2018-09-14 15:48:06,803 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:06,805 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,806 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,808 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,812 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,824 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 47 [2018-09-14 15:48:06,826 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 3 xjuncts. [2018-09-14 15:48:06,828 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,828 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,828 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,830 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2018-09-14 15:48:06,830 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:06,832 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,833 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:06,833 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2018-09-14 15:48:06,834 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:06,871 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-09-14 15:48:06,959 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,966 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:06,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 79 [2018-09-14 15:48:07,232 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2018-09-14 15:48:07,235 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,242 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,243 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,244 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 95 [2018-09-14 15:48:07,289 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-09-14 15:48:07,293 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 16 xjuncts. [2018-09-14 15:48:07,295 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,301 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,302 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,303 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:07,336 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 80 [2018-09-14 15:48:07,337 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 4 xjuncts. [2018-09-14 15:48:07,340 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,343 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,349 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,349 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,351 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,352 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,370 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,420 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 47 treesize of output 125 [2018-09-14 15:48:07,421 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-09-14 15:48:07,434 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 39 xjuncts. [2018-09-14 15:48:07,449 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,452 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,458 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,458 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,459 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,460 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,460 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,480 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,521 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 45 treesize of output 123 [2018-09-14 15:48:07,522 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-09-14 15:48:07,528 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 27 xjuncts. [2018-09-14 15:48:07,530 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,531 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,532 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,538 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,538 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,539 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:07,540 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,552 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,576 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 102 [2018-09-14 15:48:07,579 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 6 xjuncts. [2018-09-14 15:48:07,581 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,584 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,591 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,591 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,592 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,592 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,593 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,611 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,659 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 45 treesize of output 120 [2018-09-14 15:48:07,660 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-09-14 15:48:07,668 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 27 xjuncts. [2018-09-14 15:48:07,701 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,708 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,714 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,715 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,717 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,717 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,734 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:07,782 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 47 treesize of output 128 [2018-09-14 15:48:07,782 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-09-14 15:48:07,801 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 39 xjuncts. [2018-09-14 15:48:09,139 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,140 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,141 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,141 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,151 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,159 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 51 [2018-09-14 15:48:09,160 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:09,162 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,163 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,163 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:09,164 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 39 [2018-09-14 15:48:09,164 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:09,167 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,169 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,171 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,181 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 56 [2018-09-14 15:48:09,196 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 3 xjuncts. [2018-09-14 15:48:09,205 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,206 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,206 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,210 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2018-09-14 15:48:09,210 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:09,482 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,483 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,483 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,484 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,484 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,484 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,491 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 50 [2018-09-14 15:48:09,491 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:09,496 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,497 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,498 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:09,513 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 52 [2018-09-14 15:48:09,514 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 2 xjuncts. [2018-09-14 15:48:09,516 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,516 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,518 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,518 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,519 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,520 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,531 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,548 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 82 [2018-09-14 15:48:09,551 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 6 xjuncts. [2018-09-14 15:48:09,724 INFO L267 ElimStorePlain]: Start of recursive call 33: 3 dim-1 vars, End of recursive call: and 11 xjuncts. [2018-09-14 15:48:09,849 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,850 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,851 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,855 INFO L477 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 49 treesize of output 64 [2018-09-14 15:48:09,946 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,947 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,950 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,952 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,953 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,964 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,988 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 79 [2018-09-14 15:48:09,994 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 9 xjuncts. [2018-09-14 15:48:09,996 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,996 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,997 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,997 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,998 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,998 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:09,999 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,011 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,024 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 66 [2018-09-14 15:48:10,026 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 4 xjuncts. [2018-09-14 15:48:10,047 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-09-14 15:48:10,047 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:10,050 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,050 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,051 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:10,051 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,055 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 32 [2018-09-14 15:48:10,056 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:10,058 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,058 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,060 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,062 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,062 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,074 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,097 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 76 [2018-09-14 15:48:10,102 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 9 xjuncts. [2018-09-14 15:48:10,105 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,107 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,109 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,110 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,112 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,113 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,114 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,132 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,147 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 69 [2018-09-14 15:48:10,149 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 4 xjuncts. [2018-09-14 15:48:10,153 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,154 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,155 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,156 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,157 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:48:10,159 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:10,166 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2018-09-14 15:48:10,166 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:10,264 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-09-14 15:48:10,342 INFO L267 ElimStorePlain]: Start of recursive call 24: 4 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-09-14 15:48:10,381 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-09-14 15:48:10,439 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-09-14 15:48:10,439 INFO L202 ElimStorePlain]: Needed 55 recursive calls to eliminate 8 variables, input treesize:105, output treesize:68 [2018-09-14 15:48:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2018-09-14 15:48:10,524 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:48:10,524 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:48:10,540 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-14 15:48:10,540 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:48:10,629 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-09-14 15:48:10,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:48:10,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:48:10,660 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:10,663 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2018-09-14 15:48:10,663 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:10,674 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-14 15:48:10,675 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:16 [2018-09-14 15:48:12,751 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:12,753 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:12,754 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:12,759 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 31 [2018-09-14 15:48:12,760 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:12,777 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-14 15:48:12,778 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:19 [2018-09-14 15:48:12,841 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:12,842 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:12,842 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:12,843 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:12,845 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:12,846 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:12,855 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 47 [2018-09-14 15:48:12,856 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-14 15:48:12,882 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-14 15:48:12,882 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2018-09-14 15:48:12,993 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:13,002 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:13,003 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:13,005 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:13,007 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:13,010 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:13,012 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:13,013 INFO L700 Elim1Store]: detected not equals via solver [2018-09-14 15:48:13,050 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 86 [2018-09-14 15:48:13,052 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2018-09-14 15:48:13,161 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-09-14 15:48:13,161 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:41, output treesize:43 [2018-09-14 15:48:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:48:13,194 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:49:46,375 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,377 INFO L477 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 90 treesize of output 83 [2018-09-14 15:49:46,418 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,459 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 83 [2018-09-14 15:49:46,463 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,466 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,498 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 89 [2018-09-14 15:49:46,743 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 82 [2018-09-14 15:49:46,746 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,752 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,753 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,799 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 100 [2018-09-14 15:49:46,799 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-09-14 15:49:46,814 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 64 xjuncts. [2018-09-14 15:49:46,820 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,830 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,832 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,833 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,851 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:46,902 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 131 [2018-09-14 15:49:46,902 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-14 15:49:47,096 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 156 xjuncts. [2018-09-14 15:49:47,107 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,121 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,124 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,125 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,160 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,212 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 50 treesize of output 133 [2018-09-14 15:49:47,213 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-14 15:49:47,404 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 156 xjuncts. [2018-09-14 15:49:47,415 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,433 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,434 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,435 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,436 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,464 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,521 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 129 [2018-09-14 15:49:47,521 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-09-14 15:49:47,607 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 123 xjuncts. [2018-09-14 15:49:47,623 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,637 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,640 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,641 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,670 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:47,729 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 133 [2018-09-14 15:49:47,729 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-14 15:49:47,883 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 156 xjuncts. [2018-09-14 15:49:47,907 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:48,078 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:48,111 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:48,112 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:48,133 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:48,133 INFO L303 Elim1Store]: Index analysis took 248 ms [2018-09-14 15:49:48,186 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 50 treesize of output 131 [2018-09-14 15:49:48,187 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-14 15:49:48,410 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 156 xjuncts. [2018-09-14 15:49:48,436 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:48,561 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:49:48,576 INFO L303 Elim1Store]: Index analysis took 165 ms [2018-09-14 15:49:48,615 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 42 treesize of output 100 [2018-09-14 15:49:48,615 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-09-14 15:49:48,641 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 128 xjuncts. [2018-09-14 15:50:13,007 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,008 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,011 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,050 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 69 [2018-09-14 15:50:13,052 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 8 xjuncts. [2018-09-14 15:50:13,054 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,055 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,060 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,063 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,064 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,086 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,113 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 92 [2018-09-14 15:50:13,117 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 9 xjuncts. [2018-09-14 15:50:13,122 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,123 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,128 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,131 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,132 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,154 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,182 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 94 [2018-09-14 15:50:13,185 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 9 xjuncts. [2018-09-14 15:50:13,604 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,604 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,615 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 47 [2018-09-14 15:50:13,616 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-09-14 15:50:13,619 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,620 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,622 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,630 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 65 [2018-09-14 15:50:13,648 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 3 xjuncts. [2018-09-14 15:50:13,650 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:13,671 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 50 [2018-09-14 15:50:13,673 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 4 xjuncts. [2018-09-14 15:50:13,891 INFO L267 ElimStorePlain]: Start of recursive call 4: 3 dim-1 vars, End of recursive call: and 11 xjuncts. [2018-09-14 15:50:14,309 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:14,319 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:14,379 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 115 [2018-09-14 15:50:17,026 WARN L178 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 750 DAG size of output: 466 [2018-09-14 15:50:17,031 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,032 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,032 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,037 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,079 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 110 [2018-09-14 15:50:17,086 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 32 xjuncts. [2018-09-14 15:50:17,088 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,088 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,089 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,095 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,097 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,098 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,118 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,162 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 59 treesize of output 138 [2018-09-14 15:50:17,162 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-09-14 15:50:17,190 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 48 xjuncts. [2018-09-14 15:50:17,195 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,196 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,197 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,202 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,204 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,205 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,224 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,265 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 58 treesize of output 139 [2018-09-14 15:50:17,265 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-09-14 15:50:17,294 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 48 xjuncts. [2018-09-14 15:50:17,320 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,334 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,343 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,396 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,397 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,410 INFO L303 Elim1Store]: Index analysis took 115 ms [2018-09-14 15:50:17,434 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 100 [2018-09-14 15:50:17,438 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 16 xjuncts. [2018-09-14 15:50:17,470 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,479 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,483 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,492 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,494 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,494 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,514 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 59 treesize of output 140 [2018-09-14 15:50:17,557 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-09-14 15:50:17,581 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 48 xjuncts. [2018-09-14 15:50:17,584 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,584 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,585 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,591 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,593 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,593 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,613 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,659 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 61 treesize of output 138 [2018-09-14 15:50:17,659 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-09-14 15:50:17,685 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 48 xjuncts. [2018-09-14 15:50:17,691 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,691 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,691 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,698 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,700 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,701 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,721 INFO L682 Elim1Store]: detected equality via solver [2018-09-14 15:50:17,762 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 61 treesize of output 140 [2018-09-14 15:50:17,763 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-09-14 15:50:17,787 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 48 xjuncts. Received shutdown request... [2018-09-14 15:50:25,212 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 15:50:25,412 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:50:25,413 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 15:50:25,418 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 15:50:25,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 03:50:25 BoogieIcfgContainer [2018-09-14 15:50:25,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 15:50:25,419 INFO L168 Benchmark]: Toolchain (without parser) took 272059.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 776.5 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -560.6 MB). Peak memory consumption was 799.1 MB. Max. memory is 7.1 GB. [2018-09-14 15:50:25,419 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:50:25,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-14 15:50:25,420 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.89 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:50:25,420 INFO L168 Benchmark]: Boogie Preprocessor took 41.07 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:50:25,421 INFO L168 Benchmark]: RCFGBuilder took 570.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 788.0 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -836.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-09-14 15:50:25,421 INFO L168 Benchmark]: TraceAbstraction took 271131.58 ms. Allocated memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -11.5 MB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 265.4 MB). Peak memory consumption was 837.1 MB. Max. memory is 7.1 GB. [2018-09-14 15:50:25,423 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 26.89 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.07 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 570.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 788.0 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -836.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 271131.58 ms. Allocated memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -11.5 MB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 265.4 MB). Peak memory consumption was 837.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 5]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 5). Cancelled while BasicCegarLoop was analyzing trace of length 35 with TraceHistMax 4, while TraceCheckSpWp was constructing backward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 774. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. TIMEOUT Result, 271.0s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 261 SDtfs, 402 SDslu, 1490 SDs, 0 SdLazy, 1434 SolverSat, 244 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1013 GetRequests, 692 SyntacticMatches, 80 SemanticMatches, 241 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2471 ImplicationChecksByTransitivity, 72.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 242 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 88.3s InterpolantComputationTime, 675 NumberOfCodeBlocks, 675 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1065 ConstructedInterpolants, 73 QuantifiedInterpolants, 263941 SizeOfPredicates, 128 NumberOfNonLiveVariables, 862 ConjunctsInSsa, 298 ConjunctsInUnsatCore, 42 InterpolantComputations, 2 PerfectInterpolantSequences, 47/430 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/insertion_sort_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_15-50-25-430.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/insertion_sort_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_15-50-25-430.csv Completed graceful shutdown