java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/loops/sum_array_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:25:24,587 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:25:24,591 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:25:24,606 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:25:24,606 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:25:24,607 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:25:24,609 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:25:24,611 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:25:24,613 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:25:24,613 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:25:24,614 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:25:24,615 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:25:24,616 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:25:24,617 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:25:24,618 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:25:24,619 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:25:24,620 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:25:24,622 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:25:24,624 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:25:24,626 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:25:24,627 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:25:24,628 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:25:24,630 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 12:25:24,631 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 12:25:24,631 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 12:25:24,632 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 12:25:24,633 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 12:25:24,634 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 12:25:24,635 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 12:25:24,636 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 12:25:24,636 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 12:25:24,637 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 12:25:24,640 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 12:25:24,666 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:25:24,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:25:24,668 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:25:24,669 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:25:24,669 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:25:24,669 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:25:24,669 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 12:25:24,669 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:25:24,670 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 12:25:24,670 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:25:24,671 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:25:24,671 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:25:24,671 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:25:24,671 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:25:24,672 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:25:24,672 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:25:24,672 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:25:24,673 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:25:24,673 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:25:24,673 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:25:24,673 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:25:24,673 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:25:24,673 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:25:24,674 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:25:24,674 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:25:24,674 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:25:24,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:25:24,674 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:25:24,675 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:25:24,677 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:25:24,677 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:25:24,677 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:25:24,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:25:24,677 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:25:24,678 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:25:24,678 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:25:24,745 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:25:24,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:25:24,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:25:24,766 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:25:24,766 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:25:24,767 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-10-24 12:25:24,839 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/473a6ffba/b17ad7c200c74949a94a0dff102cb9e4/FLAGd0fffb4bb [2018-10-24 12:25:25,289 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:25:25,290 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-10-24 12:25:25,298 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/473a6ffba/b17ad7c200c74949a94a0dff102cb9e4/FLAGd0fffb4bb [2018-10-24 12:25:25,314 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/473a6ffba/b17ad7c200c74949a94a0dff102cb9e4 [2018-10-24 12:25:25,325 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:25:25,327 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:25:25,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:25:25,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:25:25,333 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:25:25,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:25:25" (1/1) ... [2018-10-24 12:25:25,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68109397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25, skipping insertion in model container [2018-10-24 12:25:25,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:25:25" (1/1) ... [2018-10-24 12:25:25,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:25:25,373 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:25:25,606 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:25:25,611 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:25:25,654 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:25:25,681 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:25:25,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25 WrapperNode [2018-10-24 12:25:25,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:25:25,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:25:25,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:25:25,684 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:25:25,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25" (1/1) ... [2018-10-24 12:25:25,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25" (1/1) ... [2018-10-24 12:25:25,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:25:25,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:25:25,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:25:25,735 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:25:25,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25" (1/1) ... [2018-10-24 12:25:25,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25" (1/1) ... [2018-10-24 12:25:25,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25" (1/1) ... [2018-10-24 12:25:25,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25" (1/1) ... [2018-10-24 12:25:25,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25" (1/1) ... [2018-10-24 12:25:25,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25" (1/1) ... [2018-10-24 12:25:25,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25" (1/1) ... [2018-10-24 12:25:25,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:25:25,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:25:25,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:25:25,770 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:25:25,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:25:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:25:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:25:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:25:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:25:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:25:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:25:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:25:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:25:26,463 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:25:26,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:25:26 BoogieIcfgContainer [2018-10-24 12:25:26,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:25:26,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:25:26,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:25:26,469 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:25:26,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:25:25" (1/3) ... [2018-10-24 12:25:26,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4634c5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:25:26, skipping insertion in model container [2018-10-24 12:25:26,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:25" (2/3) ... [2018-10-24 12:25:26,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4634c5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:25:26, skipping insertion in model container [2018-10-24 12:25:26,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:25:26" (3/3) ... [2018-10-24 12:25:26,472 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array_true-unreach-call.i [2018-10-24 12:25:26,483 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:25:26,492 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:25:26,511 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:25:26,547 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:25:26,547 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:25:26,547 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:25:26,547 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:25:26,548 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:25:26,548 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:25:26,548 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:25:26,548 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:25:26,569 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-10-24 12:25:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 12:25:26,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:25:26,579 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:25:26,581 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:25:26,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:25:26,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1480294570, now seen corresponding path program 1 times [2018-10-24 12:25:26,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:25:26,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:26,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:25:26,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:26,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:25:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:25:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:25:26,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:25:26,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:25:26,757 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:25:26,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:25:26,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:25:26,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:25:26,778 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-10-24 12:25:26,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:25:26,803 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2018-10-24 12:25:26,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:25:26,805 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-10-24 12:25:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:25:26,813 INFO L225 Difference]: With dead ends: 62 [2018-10-24 12:25:26,813 INFO L226 Difference]: Without dead ends: 31 [2018-10-24 12:25:26,817 INFO L605 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 [2018-10-24 12:25:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-24 12:25:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-24 12:25:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-24 12:25:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-10-24 12:25:26,858 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 18 [2018-10-24 12:25:26,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:25:26,859 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-10-24 12:25:26,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:25:26,859 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-10-24 12:25:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 12:25:26,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:25:26,861 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:25:26,861 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:25:26,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:25:26,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1304153360, now seen corresponding path program 1 times [2018-10-24 12:25:26,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:25:26,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:26,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:25:26,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:26,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:25:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:25:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:25:27,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:25:27,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 12:25:27,094 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:25:27,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 12:25:27,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 12:25:27,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 12:25:27,097 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2018-10-24 12:25:27,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:25:27,449 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2018-10-24 12:25:27,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 12:25:27,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-24 12:25:27,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:25:27,453 INFO L225 Difference]: With dead ends: 76 [2018-10-24 12:25:27,454 INFO L226 Difference]: Without dead ends: 47 [2018-10-24 12:25:27,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:25:27,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-24 12:25:27,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2018-10-24 12:25:27,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-24 12:25:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-10-24 12:25:27,469 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 21 [2018-10-24 12:25:27,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:25:27,469 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-10-24 12:25:27,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 12:25:27,470 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-10-24 12:25:27,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-24 12:25:27,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:25:27,471 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:25:27,472 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:25:27,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:25:27,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2126407395, now seen corresponding path program 1 times [2018-10-24 12:25:27,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:25:27,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:27,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:25:27,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:27,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:25:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:25:28,152 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-10-24 12:25:28,626 WARN L179 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 31 [2018-10-24 12:25:28,847 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2018-10-24 12:25:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 12:25:28,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:28,951 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:25:28,952 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-10-24 12:25:28,954 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [24], [28], [31], [33], [37], [39], [43], [47], [50], [52], [54], [58], [62], [67], [77], [80], [82], [88], [89], [90], [92] [2018-10-24 12:25:28,995 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:25:28,996 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:25:29,805 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:25:29,807 INFO L272 AbstractInterpreter]: Visited 29 different actions 111 times. Merged at 19 different actions 63 times. Widened at 3 different actions 5 times. Found 14 fixpoints after 7 different actions. Largest state had 45 variables. [2018-10-24 12:25:29,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:25:29,856 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:25:29,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:29,856 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:25:29,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:25:29,870 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:25:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:25:29,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:25:30,103 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 12:25:30,153 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:30,159 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 29 [2018-10-24 12:25:30,244 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:30,245 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:30,247 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-10-24 12:25:30,248 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,260 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,268 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,269 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:16 [2018-10-24 12:25:30,387 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-24 12:25:30,403 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 [2018-10-24 12:25:30,403 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,430 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,536 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,537 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:13 [2018-10-24 12:25:30,705 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-24 12:25:30,708 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 [2018-10-24 12:25:30,709 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,711 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,721 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,722 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:13 [2018-10-24 12:25:30,747 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 31 [2018-10-24 12:25:30,768 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 18 treesize of output 17 [2018-10-24 12:25:30,769 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,795 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,807 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,808 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2018-10-24 12:25:30,927 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 39 [2018-10-24 12:25:30,935 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 10 [2018-10-24 12:25:30,935 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,963 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2018-10-24 12:25:30,963 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:30,990 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 6 [2018-10-24 12:25:30,990 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:31,013 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:31,045 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:31,046 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:51, output treesize:6 [2018-10-24 12:25:31,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:25:31,133 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:25:43,186 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 299 treesize of output 119 [2018-10-24 12:25:43,296 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-10-24 12:25:43,301 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 15 treesize of output 14 [2018-10-24 12:25:43,301 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:43,373 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 161 treesize of output 117 [2018-10-24 12:25:43,810 WARN L179 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 84 [2018-10-24 12:25:43,823 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 45 treesize of output 44 [2018-10-24 12:25:43,824 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:43,827 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 45 treesize of output 44 [2018-10-24 12:25:43,828 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:43,856 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 49 treesize of output 48 [2018-10-24 12:25:43,858 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:43,870 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 49 treesize of output 48 [2018-10-24 12:25:43,871 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:44,157 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 0 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 56 [2018-10-24 12:25:44,159 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:44,206 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 5 case distinctions, treesize of input 48 treesize of output 85 [2018-10-24 12:25:44,212 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 8 xjuncts. [2018-10-24 12:25:44,229 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 54 [2018-10-24 12:25:44,231 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:44,486 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 36 [2018-10-24 12:25:44,524 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 40 [2018-10-24 12:25:44,527 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 8 xjuncts. [2018-10-24 12:25:44,616 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-24 12:25:44,620 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 37 [2018-10-24 12:25:44,624 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-24 12:25:44,624 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:44,640 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:44,645 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 41 treesize of output 37 [2018-10-24 12:25:44,653 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 12 treesize of output 7 [2018-10-24 12:25:44,653 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:44,666 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:44,670 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 43 treesize of output 39 [2018-10-24 12:25:44,688 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 1 case distinctions, treesize of input 12 treesize of output 24 [2018-10-24 12:25:44,690 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:44,709 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:25:44,727 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 40 treesize of output 36 [2018-10-24 12:25:44,741 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 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 14 [2018-10-24 12:25:44,742 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:44,763 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:25:45,035 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2018-10-24 12:25:45,052 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 1 case distinctions, treesize of input 35 treesize of output 35 [2018-10-24 12:25:45,054 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:45,124 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-10-24 12:25:45,125 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:45,128 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2018-10-24 12:25:45,129 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:45,192 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 48 [2018-10-24 12:25:45,195 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 8 xjuncts. [2018-10-24 12:25:45,298 INFO L267 ElimStorePlain]: Start of recursive call 22: 3 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-10-24 12:25:45,312 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2018-10-24 12:25:45,321 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2018-10-24 12:25:45,322 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:45,372 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2018-10-24 12:25:45,372 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:45,501 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 0 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2018-10-24 12:25:45,503 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:45,535 INFO L267 ElimStorePlain]: Start of recursive call 27: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-24 12:25:45,872 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 8 xjuncts. [2018-10-24 12:25:45,880 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 65 [2018-10-24 12:25:45,971 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 2 case distinctions, treesize of input 22 treesize of output 34 [2018-10-24 12:25:45,972 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:46,030 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2018-10-24 12:25:46,060 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 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 14 [2018-10-24 12:25:46,061 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:46,068 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:25:46,072 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 17 [2018-10-24 12:25:46,075 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-24 12:25:46,076 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:46,079 INFO L267 ElimStorePlain]: Start of recursive call 35: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:46,090 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:46,182 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 5 xjuncts. [2018-10-24 12:25:46,238 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 5 xjuncts. [2018-10-24 12:25:46,239 INFO L202 ElimStorePlain]: Needed 36 recursive calls to eliminate 6 variables, input treesize:299, output treesize:48 [2018-10-24 12:25:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:25:46,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:25:46,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 22 [2018-10-24 12:25:46,335 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:25:46,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 12:25:46,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 12:25:46,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=363, Unknown=5, NotChecked=0, Total=462 [2018-10-24 12:25:46,339 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 15 states. [2018-10-24 12:25:47,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:25:47,052 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2018-10-24 12:25:47,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 12:25:47,053 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2018-10-24 12:25:47,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:25:47,056 INFO L225 Difference]: With dead ends: 53 [2018-10-24 12:25:47,056 INFO L226 Difference]: Without dead ends: 51 [2018-10-24 12:25:47,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=149, Invalid=496, Unknown=5, NotChecked=0, Total=650 [2018-10-24 12:25:47,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-24 12:25:47,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2018-10-24 12:25:47,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-24 12:25:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-10-24 12:25:47,064 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 32 [2018-10-24 12:25:47,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:25:47,065 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-10-24 12:25:47,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 12:25:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-10-24 12:25:47,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 12:25:47,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:25:47,067 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:25:47,067 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:25:47,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:25:47,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1933410342, now seen corresponding path program 1 times [2018-10-24 12:25:47,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:25:47,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:47,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:25:47,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:47,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:25:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:25:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 12:25:47,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:47,291 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:25:47,292 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-10-24 12:25:47,292 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [24], [28], [31], [33], [37], [39], [43], [47], [50], [52], [54], [58], [62], [67], [69], [71], [77], [80], [82], [85], [87], [88], [89], [90], [92], [93] [2018-10-24 12:25:47,297 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:25:47,297 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:25:47,617 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:25:47,617 INFO L272 AbstractInterpreter]: Visited 34 different actions 163 times. Merged at 22 different actions 86 times. Widened at 4 different actions 8 times. Found 17 fixpoints after 9 different actions. Largest state had 46 variables. [2018-10-24 12:25:47,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:25:47,655 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:25:47,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:47,656 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:25:47,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:25:47,667 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:25:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:25:47,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:25:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 12:25:48,125 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:25:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 12:25:48,534 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:25:48,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2018-10-24 12:25:48,534 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:25:48,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 12:25:48,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 12:25:48,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-10-24 12:25:48,537 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 8 states. [2018-10-24 12:25:48,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:25:48,809 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2018-10-24 12:25:48,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 12:25:48,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-10-24 12:25:48,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:25:48,811 INFO L225 Difference]: With dead ends: 117 [2018-10-24 12:25:48,812 INFO L226 Difference]: Without dead ends: 67 [2018-10-24 12:25:48,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-10-24 12:25:48,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-24 12:25:48,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2018-10-24 12:25:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-24 12:25:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2018-10-24 12:25:48,822 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 41 [2018-10-24 12:25:48,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:25:48,823 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2018-10-24 12:25:48,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 12:25:48,823 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2018-10-24 12:25:48,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-24 12:25:48,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:25:48,825 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:25:48,825 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:25:48,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:25:48,825 INFO L82 PathProgramCache]: Analyzing trace with hash -677671225, now seen corresponding path program 2 times [2018-10-24 12:25:48,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:25:48,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:48,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:25:48,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:48,827 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:25:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:25:49,324 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2018-10-24 12:25:54,937 WARN L179 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2018-10-24 12:25:55,614 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2018-10-24 12:25:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-24 12:25:55,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:55,653 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:25:55,653 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:25:55,653 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:25:55,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:55,653 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:25:55,662 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:25:55,663 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:25:56,109 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-24 12:25:56,109 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:25:56,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:25:56,155 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:56,156 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 29 [2018-10-24 12:25:56,175 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:56,176 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:56,177 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-10-24 12:25:56,177 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:56,183 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:56,202 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:56,203 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:22 [2018-10-24 12:25:56,685 INFO L303 Elim1Store]: Index analysis took 157 ms [2018-10-24 12:25:56,687 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 49 [2018-10-24 12:25:56,698 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 36 treesize of output 35 [2018-10-24 12:25:56,699 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:56,730 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:56,748 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:56,749 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:70, output treesize:66 [2018-10-24 12:26:12,877 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 61 treesize of output 61 [2018-10-24 12:26:12,881 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:12,882 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 34 [2018-10-24 12:26:12,883 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:12,906 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:12,907 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2018-10-24 12:26:12,907 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:12,920 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:12,921 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2018-10-24 12:26:12,922 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:12,931 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:12,953 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:12,954 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:99, output treesize:6 [2018-10-24 12:26:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-24 12:26:13,088 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:26:13,585 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-24 12:26:13,617 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 91 [2018-10-24 12:26:13,970 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 83 [2018-10-24 12:26:14,002 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 3 case distinctions, treesize of input 47 treesize of output 71 [2018-10-24 12:26:14,006 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 8 xjuncts. [2018-10-24 12:26:14,168 INFO L267 ElimStorePlain]: Start of recursive call 2: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:14,186 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 93 [2018-10-24 12:26:14,632 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2018-10-24 12:26:14,649 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 1 case distinctions, treesize of input 61 treesize of output 65 [2018-10-24 12:26:14,650 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:14,711 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:14,765 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 5 case distinctions, treesize of input 58 treesize of output 125 [2018-10-24 12:26:14,777 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 32 xjuncts. [2018-10-24 12:26:14,900 INFO L267 ElimStorePlain]: Start of recursive call 4: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:14,921 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 138 [2018-10-24 12:26:15,060 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-24 12:26:15,066 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:15,071 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:15,088 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 4 case distinctions, treesize of input 76 treesize of output 81 [2018-10-24 12:26:15,091 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:15,163 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:15,203 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:15,217 INFO L303 Elim1Store]: Index analysis took 125 ms [2018-10-24 12:26:15,295 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 4 case distinctions, treesize of input 83 treesize of output 125 [2018-10-24 12:26:15,305 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 16 xjuncts. [2018-10-24 12:26:15,392 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 6 case distinctions, treesize of input 97 treesize of output 133 [2018-10-24 12:26:15,393 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:26:15,425 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 64 xjuncts. [2018-10-24 12:26:15,861 INFO L267 ElimStorePlain]: Start of recursive call 7: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:15,898 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 201 treesize of output 193 [2018-10-24 12:26:16,859 WARN L179 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 149 [2018-10-24 12:26:16,864 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,874 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,956 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 98 treesize of output 184 [2018-10-24 12:26:16,957 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:17,103 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 256 xjuncts. [2018-10-24 12:26:21,200 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,207 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,360 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 95 treesize of output 181 [2018-10-24 12:26:21,360 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:21,465 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 256 xjuncts. [2018-10-24 12:26:23,562 INFO L267 ElimStorePlain]: Start of recursive call 11: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:23,624 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 194 [2018-10-24 12:26:24,642 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 214 DAG size of output: 132 [2018-10-24 12:26:24,668 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:24,681 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:24,761 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 99 treesize of output 181 [2018-10-24 12:26:24,762 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:24,892 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 256 xjuncts. [2018-10-24 12:26:27,489 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:27,491 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 86 [2018-10-24 12:26:27,492 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:27,925 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:27,935 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:28,016 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 96 treesize of output 178 [2018-10-24 12:26:28,017 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:28,116 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 256 xjuncts. [2018-10-24 12:26:30,347 INFO L267 ElimStorePlain]: Start of recursive call 14: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:30,351 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 89 [2018-10-24 12:26:30,390 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:30,405 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 29 treesize of output 38 [2018-10-24 12:26:30,406 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:30,421 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:30,437 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 221 treesize of output 195 [2018-10-24 12:26:30,671 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-24 12:26:30,676 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:30,677 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 88 [2018-10-24 12:26:30,678 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:26:30,682 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:30,685 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 116 treesize of output 99 [2018-10-24 12:26:30,686 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:26:30,771 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 1 case distinctions, treesize of input 116 treesize of output 104 [2018-10-24 12:26:30,774 INFO L267 ElimStorePlain]: Start of recursive call 23: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-10-24 12:26:30,929 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:30,930 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:30,930 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:30,939 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 78 [2018-10-24 12:26:30,940 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:30,952 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:30,952 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:30,953 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:30,957 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 74 treesize of output 75 [2018-10-24 12:26:30,958 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:30,962 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:30,963 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:30,964 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 76 treesize of output 77 [2018-10-24 12:26:30,965 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:26:31,051 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 73 [2018-10-24 12:26:31,053 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 4 xjuncts. [2018-10-24 12:26:31,171 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:31,175 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:31,178 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:31,205 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 2 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 106 [2018-10-24 12:26:31,207 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:31,215 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:31,218 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:31,221 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:31,226 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:31,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 113 treesize of output 177 [2018-10-24 12:26:31,289 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:26:31,315 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 64 xjuncts. [2018-10-24 12:26:31,673 INFO L267 ElimStorePlain]: Start of recursive call 20: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:26:31,679 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 89 treesize of output 80 [2018-10-24 12:26:31,723 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 1 case distinctions, treesize of input 30 treesize of output 35 [2018-10-24 12:26:31,724 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-24 12:26:31,751 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 1 case distinctions, treesize of input 19 treesize of output 24 [2018-10-24 12:26:31,752 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:31,766 INFO L267 ElimStorePlain]: Start of recursive call 30: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:26:31,789 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 138 treesize of output 132 [2018-10-24 12:26:32,013 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-10-24 12:26:32,018 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:32,020 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 75 treesize of output 74 [2018-10-24 12:26:32,021 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:32,096 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2018-10-24 12:26:32,097 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:32,276 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:32,299 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 2 case distinctions, treesize of input 69 treesize of output 88 [2018-10-24 12:26:32,301 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 4 xjuncts. [2018-10-24 12:26:32,390 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:32,393 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 50 treesize of output 49 [2018-10-24 12:26:32,394 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:32,416 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2018-10-24 12:26:32,416 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:32,462 INFO L267 ElimStorePlain]: Start of recursive call 33: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:32,496 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 137 [2018-10-24 12:26:32,920 WARN L179 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 116 [2018-10-24 12:26:32,925 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:32,936 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:33,011 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 66 treesize of output 172 [2018-10-24 12:26:33,011 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:33,101 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 256 xjuncts. [2018-10-24 12:26:35,221 INFO L267 ElimStorePlain]: Start of recursive call 39: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:35,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 59 [2018-10-24 12:26:35,331 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2018-10-24 12:26:35,332 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:35,411 INFO L267 ElimStorePlain]: Start of recursive call 41: 5 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:35,419 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 89 treesize of output 80 [2018-10-24 12:26:35,480 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 1 case distinctions, treesize of input 30 treesize of output 35 [2018-10-24 12:26:35,481 INFO L267 ElimStorePlain]: Start of recursive call 44: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-24 12:26:35,511 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 1 case distinctions, treesize of input 19 treesize of output 24 [2018-10-24 12:26:35,512 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:35,527 INFO L267 ElimStorePlain]: Start of recursive call 43: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:26:35,543 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 206 treesize of output 182 [2018-10-24 12:26:35,671 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-24 12:26:35,675 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,679 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 103 treesize of output 90 [2018-10-24 12:26:35,680 INFO L267 ElimStorePlain]: Start of recursive call 47: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:26:35,733 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,735 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 52 treesize of output 51 [2018-10-24 12:26:35,736 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:35,774 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,779 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,783 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,784 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,846 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 176 [2018-10-24 12:26:35,847 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:26:35,869 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 64 xjuncts. [2018-10-24 12:26:36,165 INFO L267 ElimStorePlain]: Start of recursive call 46: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:36,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 239 [2018-10-24 12:26:36,896 WARN L179 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 163 [2018-10-24 12:26:36,900 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,911 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,991 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 117 treesize of output 179 [2018-10-24 12:26:36,991 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:37,092 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 256 xjuncts. [2018-10-24 12:26:39,491 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:39,645 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:39,898 INFO L303 Elim1Store]: Index analysis took 438 ms [2018-10-24 12:26:40,014 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 117 treesize of output 179 [2018-10-24 12:26:40,015 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:40,112 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 256 xjuncts. [2018-10-24 12:26:42,530 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:42,535 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:42,733 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 114 treesize of output 176 [2018-10-24 12:26:42,733 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:42,807 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 256 xjuncts. [2018-10-24 12:26:44,560 INFO L267 ElimStorePlain]: Start of recursive call 50: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:44,584 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 121 [2018-10-24 12:26:44,811 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2018-10-24 12:26:44,814 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:44,816 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 61 treesize of output 56 [2018-10-24 12:26:44,816 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:44,936 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:44,946 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:45,021 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 58 treesize of output 164 [2018-10-24 12:26:45,022 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:45,104 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 256 xjuncts. [2018-10-24 12:26:47,034 INFO L267 ElimStorePlain]: Start of recursive call 54: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:47,059 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 193 treesize of output 177 [2018-10-24 12:26:47,301 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 86 [2018-10-24 12:26:47,315 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:47,322 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:47,363 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 4 case distinctions, treesize of input 90 treesize of output 132 [2018-10-24 12:26:47,373 INFO L267 ElimStorePlain]: Start of recursive call 58: 25 dim-0 vars, End of recursive call: 25 dim-0 vars, and 16 xjuncts. [2018-10-24 12:26:48,015 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:48,040 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 93 treesize of output 80 [2018-10-24 12:26:48,041 INFO L267 ElimStorePlain]: Start of recursive call 59: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:26:48,572 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:48,594 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 97 [2018-10-24 12:26:48,596 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 4 xjuncts. [2018-10-24 12:26:49,231 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2018-10-24 12:26:49,232 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 75 [2018-10-24 12:26:49,236 INFO L267 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,249 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2018-10-24 12:26:49,249 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,252 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2018-10-24 12:26:49,252 INFO L267 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,255 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2018-10-24 12:26:49,256 INFO L267 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,260 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 57 [2018-10-24 12:26:49,261 INFO L267 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,265 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2018-10-24 12:26:49,265 INFO L267 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,268 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2018-10-24 12:26:49,268 INFO L267 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,276 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2018-10-24 12:26:49,277 INFO L267 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,279 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 44 [2018-10-24 12:26:49,280 INFO L267 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,284 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2018-10-24 12:26:49,285 INFO L267 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,287 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2018-10-24 12:26:49,288 INFO L267 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,291 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2018-10-24 12:26:49,292 INFO L267 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,296 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2018-10-24 12:26:49,296 INFO L267 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,300 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 44 [2018-10-24 12:26:49,301 INFO L267 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,304 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2018-10-24 12:26:49,305 INFO L267 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,571 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2018-10-24 12:26:49,571 INFO L267 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,574 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:49,577 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 39 treesize of output 38 [2018-10-24 12:26:49,577 INFO L267 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,607 INFO L267 ElimStorePlain]: Start of recursive call 57: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,620 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 93 [2018-10-24 12:26:49,712 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 1 case distinctions, treesize of input 61 treesize of output 65 [2018-10-24 12:26:49,713 INFO L267 ElimStorePlain]: Start of recursive call 80: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-24 12:26:49,764 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:49,823 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 5 case distinctions, treesize of input 58 treesize of output 125 [2018-10-24 12:26:49,829 INFO L267 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 32 xjuncts. [2018-10-24 12:26:49,947 INFO L267 ElimStorePlain]: Start of recursive call 79: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:49,975 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 121 [2018-10-24 12:26:50,166 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2018-10-24 12:26:50,170 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2018-10-24 12:26:50,170 INFO L267 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:50,237 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:50,239 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 61 treesize of output 56 [2018-10-24 12:26:50,239 INFO L267 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:50,325 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:50,330 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:50,404 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 58 treesize of output 164 [2018-10-24 12:26:50,404 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:50,476 INFO L267 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 256 xjuncts. [2018-10-24 12:26:52,507 INFO L267 ElimStorePlain]: Start of recursive call 82: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:52,527 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 75 [2018-10-24 12:26:52,677 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2018-10-24 12:26:52,690 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 1 case distinctions, treesize of input 42 treesize of output 46 [2018-10-24 12:26:52,691 INFO L267 ElimStorePlain]: Start of recursive call 87: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-24 12:26:52,771 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2018-10-24 12:26:52,772 INFO L267 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:52,896 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2018-10-24 12:26:52,897 INFO L267 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:52,936 INFO L267 ElimStorePlain]: Start of recursive call 86: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:52,958 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 75 [2018-10-24 12:26:53,119 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2018-10-24 12:26:53,149 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 3 case distinctions, treesize of input 39 treesize of output 63 [2018-10-24 12:26:53,151 INFO L267 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 8 xjuncts. [2018-10-24 12:26:53,244 INFO L267 ElimStorePlain]: Start of recursive call 90: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:53,286 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 196 treesize of output 178 [2018-10-24 12:26:53,536 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2018-10-24 12:26:53,540 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:53,542 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 81 [2018-10-24 12:26:53,542 INFO L267 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:53,687 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:53,690 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 78 [2018-10-24 12:26:53,691 INFO L267 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:53,783 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:53,786 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:53,828 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 88 treesize of output 126 [2018-10-24 12:26:53,834 INFO L267 ElimStorePlain]: Start of recursive call 95: 14 dim-0 vars, End of recursive call: 14 dim-0 vars, and 16 xjuncts. [2018-10-24 12:26:54,038 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:54,053 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:54,141 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 58 treesize of output 164 [2018-10-24 12:26:54,142 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:54,197 INFO L267 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 256 xjuncts. [2018-10-24 12:26:56,130 INFO L267 ElimStorePlain]: Start of recursive call 92: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:56,145 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 138 [2018-10-24 12:26:56,344 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-24 12:26:56,409 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 6 case distinctions, treesize of input 97 treesize of output 133 [2018-10-24 12:26:56,409 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:26:56,422 INFO L267 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 64 xjuncts. [2018-10-24 12:26:56,428 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:56,430 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:56,447 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 4 case distinctions, treesize of input 76 treesize of output 81 [2018-10-24 12:26:56,448 INFO L267 ElimStorePlain]: Start of recursive call 99: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:56,454 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:56,454 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:56,497 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 4 case distinctions, treesize of input 83 treesize of output 125 [2018-10-24 12:26:56,502 INFO L267 ElimStorePlain]: Start of recursive call 100: End of recursive call: and 16 xjuncts. [2018-10-24 12:26:56,846 INFO L267 ElimStorePlain]: Start of recursive call 97: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:56,877 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 137 [2018-10-24 12:26:57,316 WARN L179 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 116 [2018-10-24 12:26:57,322 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:57,326 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:57,367 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 4 case distinctions, treesize of input 72 treesize of output 130 [2018-10-24 12:26:57,373 INFO L267 ElimStorePlain]: Start of recursive call 102: 11 dim-0 vars, End of recursive call: 11 dim-0 vars, and 16 xjuncts. [2018-10-24 12:26:57,741 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:57,752 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:57,832 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 69 treesize of output 175 [2018-10-24 12:26:57,832 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:57,886 INFO L267 ElimStorePlain]: Start of recursive call 103: End of recursive call: and 256 xjuncts. [2018-10-24 12:27:00,087 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:00,093 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:00,174 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 69 treesize of output 175 [2018-10-24 12:27:00,175 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:27:00,236 INFO L267 ElimStorePlain]: Start of recursive call 104: End of recursive call: and 256 xjuncts. [2018-10-24 12:27:02,531 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:02,539 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:02,627 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 66 treesize of output 172 [2018-10-24 12:27:02,628 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:27:02,680 INFO L267 ElimStorePlain]: Start of recursive call 105: End of recursive call: and 256 xjuncts. [2018-10-24 12:27:04,532 INFO L267 ElimStorePlain]: Start of recursive call 101: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:04,613 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 3 xjuncts. [2018-10-24 12:27:04,613 INFO L202 ElimStorePlain]: Needed 105 recursive calls to eliminate 3 variables, input treesize:149, output treesize:86 [2018-10-24 12:27:08,778 WARN L179 SmtUtils]: Spent 4.10 s on a formula simplification that was a NOOP. DAG size: 43 [2018-10-24 12:27:12,652 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-10-24 12:27:18,948 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-10-24 12:27:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-24 12:27:19,042 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:27:19,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 37 [2018-10-24 12:27:19,042 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:27:19,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-24 12:27:19,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-24 12:27:19,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1156, Unknown=8, NotChecked=0, Total=1332 [2018-10-24 12:27:19,044 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 28 states. [2018-10-24 12:27:19,719 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2018-10-24 12:27:23,955 WARN L179 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-24 12:27:26,394 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2018-10-24 12:27:37,235 WARN L179 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-24 12:27:41,637 WARN L179 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-24 12:27:45,881 WARN L179 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-24 12:27:52,807 WARN L179 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 66 [2018-10-24 12:28:01,738 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 56 [2018-10-24 12:28:05,959 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 68 [2018-10-24 12:28:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:28:38,630 INFO L93 Difference]: Finished difference Result 179 states and 196 transitions. [2018-10-24 12:28:38,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-24 12:28:38,630 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 52 [2018-10-24 12:28:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:28:38,634 INFO L225 Difference]: With dead ends: 179 [2018-10-24 12:28:38,635 INFO L226 Difference]: Without dead ends: 93 [2018-10-24 12:28:38,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 81 SyntacticMatches, 10 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1398 ImplicationChecksByTransitivity, 94.0s TimeCoverageRelationStatistics Valid=870, Invalid=4959, Unknown=23, NotChecked=0, Total=5852 [2018-10-24 12:28:38,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-24 12:28:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2018-10-24 12:28:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-24 12:28:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2018-10-24 12:28:38,651 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 52 [2018-10-24 12:28:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:28:38,652 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2018-10-24 12:28:38,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-24 12:28:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2018-10-24 12:28:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-24 12:28:38,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:28:38,654 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:28:38,654 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:28:38,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:28:38,655 INFO L82 PathProgramCache]: Analyzing trace with hash -810085603, now seen corresponding path program 3 times [2018-10-24 12:28:38,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:28:38,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:28:38,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:28:38,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:28:38,656 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:28:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 12:29:52,165 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$IntegerInterpolator.interpolate(Interpolator.java:1428) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$MixedLAInterpolator.convert(Interpolator.java:1284) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:253) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.mixedPivotLA(Interpolator.java:1474) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.combine(Interpolator.java:359) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$2(Interpolator.java:328) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$CombineInterpolants.walk(Interpolator.java:153) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-24 12:29:52,171 INFO L168 Benchmark]: Toolchain (without parser) took 266844.63 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -918.0 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 12:29:52,171 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 12:29:52,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.16 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. [2018-10-24 12:29:52,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.61 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. [2018-10-24 12:29:52,172 INFO L168 Benchmark]: Boogie Preprocessor took 33.98 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. [2018-10-24 12:29:52,172 INFO L168 Benchmark]: RCFGBuilder took 694.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -772.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2018-10-24 12:29:52,174 INFO L168 Benchmark]: TraceAbstraction took 265704.81 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -156.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 12:29:52,176 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 354.16 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 51.61 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 33.98 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 694.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -772.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265704.81 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -156.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$IntegerInterpolator.interpolate(Interpolator.java:1428) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown