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.epf -i ../../../trunk/examples/svcomp/loops/sum_array_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:07:10,605 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:07:10,609 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:07:10,627 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:07:10,627 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:07:10,629 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:07:10,631 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:07:10,634 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:07:10,637 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:07:10,646 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:07:10,648 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:07:10,648 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:07:10,650 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:07:10,653 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:07:10,654 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:07:10,655 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:07:10,659 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:07:10,660 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:07:10,666 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:07:10,670 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:07:10,671 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:07:10,677 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:07:10,680 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 12:07:10,681 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 12:07:10,681 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 12:07:10,682 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 12:07:10,683 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 12:07:10,683 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 12:07:10,684 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 12:07:10,685 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 12:07:10,686 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 12:07:10,686 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 12:07:10,686 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 12:07:10,687 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 12:07:10,688 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 12:07:10,688 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 12:07:10,689 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 12:07:10,708 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:07:10,708 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:07:10,709 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:07:10,709 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:07:10,710 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:07:10,710 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:07:10,710 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:07:10,710 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:07:10,710 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:07:10,710 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:07:10,711 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:07:10,711 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:07:10,712 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:07:10,712 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:07:10,712 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:07:10,712 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:07:10,712 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:07:10,713 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:07:10,713 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:07:10,713 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:07:10,713 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:07:10,713 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:07:10,714 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:07:10,714 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:07:10,714 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:07:10,714 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:07:10,714 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:07:10,715 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:07:10,715 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:07:10,715 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:07:10,715 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:07:10,715 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:07:10,716 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:07:10,716 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:07:10,769 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:07:10,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:07:10,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:07:10,790 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:07:10,791 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:07:10,792 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-10-24 12:07:10,855 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7324355d6/4df25da7963b41819851da34a6204ad2/FLAG0bf17af0a [2018-10-24 12:07:11,327 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:07:11,328 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-10-24 12:07:11,336 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7324355d6/4df25da7963b41819851da34a6204ad2/FLAG0bf17af0a [2018-10-24 12:07:11,351 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7324355d6/4df25da7963b41819851da34a6204ad2 [2018-10-24 12:07:11,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:07:11,365 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:07:11,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:07:11,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:07:11,371 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:07:11,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:07:11" (1/1) ... [2018-10-24 12:07:11,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a25570f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11, skipping insertion in model container [2018-10-24 12:07:11,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:07:11" (1/1) ... [2018-10-24 12:07:11,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:07:11,413 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:07:11,678 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:07:11,684 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:07:11,713 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:07:11,736 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:07:11,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11 WrapperNode [2018-10-24 12:07:11,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:07:11,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:07:11,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:07:11,738 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:07:11,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11" (1/1) ... [2018-10-24 12:07:11,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11" (1/1) ... [2018-10-24 12:07:11,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:07:11,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:07:11,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:07:11,789 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:07:11,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11" (1/1) ... [2018-10-24 12:07:11,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11" (1/1) ... [2018-10-24 12:07:11,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11" (1/1) ... [2018-10-24 12:07:11,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11" (1/1) ... [2018-10-24 12:07:11,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11" (1/1) ... [2018-10-24 12:07:11,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11" (1/1) ... [2018-10-24 12:07:11,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11" (1/1) ... [2018-10-24 12:07:11,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:07:11,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:07:11,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:07:11,829 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:07:11,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11" (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 12:07:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:07:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:07:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:07:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:07:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:07:11,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:07:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:07:11,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:07:12,560 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:07:12,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:07:12 BoogieIcfgContainer [2018-10-24 12:07:12,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:07:12,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:07:12,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:07:12,567 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:07:12,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:07:11" (1/3) ... [2018-10-24 12:07:12,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb74d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:07:12, skipping insertion in model container [2018-10-24 12:07:12,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:07:11" (2/3) ... [2018-10-24 12:07:12,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb74d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:07:12, skipping insertion in model container [2018-10-24 12:07:12,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:07:12" (3/3) ... [2018-10-24 12:07:12,571 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array_true-unreach-call.i [2018-10-24 12:07:12,580 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:07:12,594 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:07:12,613 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:07:12,650 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:07:12,650 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:07:12,650 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:07:12,650 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:07:12,651 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:07:12,651 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:07:12,651 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:07:12,651 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:07:12,674 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-10-24 12:07:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 12:07:12,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:07:12,682 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 12:07:12,684 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:07:12,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:07:12,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1480294570, now seen corresponding path program 1 times [2018-10-24 12:07:12,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:07:12,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:07:12,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:07:12,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:07:12,745 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:07:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:07:12,856 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 12:07:12,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:07:12,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:07:12,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:07:12,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:07:12,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:07:12,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:07:12,883 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-10-24 12:07:12,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:07:12,910 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2018-10-24 12:07:12,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:07:12,911 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-10-24 12:07:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:07:12,920 INFO L225 Difference]: With dead ends: 62 [2018-10-24 12:07:12,921 INFO L226 Difference]: Without dead ends: 31 [2018-10-24 12:07:12,925 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 12:07:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-24 12:07:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-24 12:07:12,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-24 12:07:12,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-10-24 12:07:12,970 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 18 [2018-10-24 12:07:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:07:12,971 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-10-24 12:07:12,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:07:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-10-24 12:07:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 12:07:12,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:07:12,972 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 12:07:12,973 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:07:12,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:07:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1304153360, now seen corresponding path program 1 times [2018-10-24 12:07:12,973 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:07:12,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:07:12,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:07:12,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:07:12,975 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:07:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:07:13,160 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 12:07:13,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:07:13,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 12:07:13,161 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:07:13,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 12:07:13,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 12:07:13,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 12:07:13,164 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2018-10-24 12:07:13,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:07:13,526 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2018-10-24 12:07:13,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 12:07:13,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-24 12:07:13,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:07:13,535 INFO L225 Difference]: With dead ends: 76 [2018-10-24 12:07:13,536 INFO L226 Difference]: Without dead ends: 47 [2018-10-24 12:07:13,538 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 12:07:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-24 12:07:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2018-10-24 12:07:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-24 12:07:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-10-24 12:07:13,558 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 21 [2018-10-24 12:07:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:07:13,559 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-10-24 12:07:13,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 12:07:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-10-24 12:07:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-24 12:07:13,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:07:13,562 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 12:07:13,563 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:07:13,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:07:13,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2126407395, now seen corresponding path program 1 times [2018-10-24 12:07:13,564 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:07:13,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:07:13,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:07:13,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:07:13,570 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:07:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:07:14,427 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-10-24 12:07:14,879 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 31 [2018-10-24 12:07:15,103 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2018-10-24 12:07:15,179 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 12:07:15,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:07:15,180 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:07:15,181 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-10-24 12:07:15,184 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 12:07:15,261 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 12:07:15,261 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:07:15,466 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 12:07:19,519 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:07:19,521 INFO L272 AbstractInterpreter]: Visited 29 different actions 301 times. Merged at 14 different actions 224 times. Widened at 3 different actions 36 times. Found 51 fixpoints after 6 different actions. Largest state had 45 variables. [2018-10-24 12:07:19,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:07:19,536 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:07:19,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:07:19,536 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 12:07:19,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:07:19,547 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:07:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:07:19,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:07:19,789 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 12:07:19,845 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:07:19,857 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 12:07:19,928 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:07:19,929 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:07:19,930 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 12:07:19,931 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:19,944 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:19,956 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:19,957 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:16 [2018-10-24 12:07:20,073 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 12:07:20,089 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 12:07:20,089 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:20,116 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:20,238 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 12:07:20,239 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:13 [2018-10-24 12:07:20,469 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 12:07:20,479 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 12:07:20,479 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:20,487 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:20,495 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 12:07:20,495 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:13 [2018-10-24 12:07:20,548 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 12:07:20,568 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 12:07:20,568 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:20,620 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:20,701 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:20,701 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2018-10-24 12:07:20,789 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 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 12:07:20,795 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 12:07:20,796 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:20,813 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 12:07:20,814 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:20,844 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 12:07:20,844 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:20,869 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:20,909 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 12:07:20,910 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:51, output treesize:6 [2018-10-24 12:07:20,960 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 12:07:20,960 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:07:30,943 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 12:07:31,049 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-10-24 12:07:31,053 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 12:07:31,054 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:31,124 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 12:07:31,459 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 84 [2018-10-24 12:07:31,468 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 12:07:31,469 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:31,473 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 12:07:31,474 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:31,504 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 12:07:31,505 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:31,518 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 12:07:31,519 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:31,856 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 12:07:31,858 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-10-24 12:07:31,918 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 12:07:31,923 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 8 xjuncts. [2018-10-24 12:07:31,951 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 12:07:31,952 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-10-24 12:07:32,202 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 12:07:32,233 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 12:07:32,236 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 8 xjuncts. [2018-10-24 12:07:32,289 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-24 12:07:32,292 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 12:07:32,296 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-24 12:07:32,297 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:32,312 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:32,328 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 12:07:32,332 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 12:07:32,333 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:32,343 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:32,347 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 12:07:32,358 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 12:07:32,360 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-10-24 12:07:32,378 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:07:32,381 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 12:07:32,391 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 12:07:32,392 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 2 xjuncts. [2018-10-24 12:07:32,437 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:07:32,669 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 12:07:32,683 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 12:07:32,685 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 2 xjuncts. [2018-10-24 12:07:32,750 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 12:07:32,751 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:32,753 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 12:07:32,754 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:32,819 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 12:07:32,823 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 8 xjuncts. [2018-10-24 12:07:32,935 INFO L267 ElimStorePlain]: Start of recursive call 22: 3 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-10-24 12:07:32,947 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 12:07:32,981 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 12:07:32,982 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:33,254 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 12:07:33,255 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:33,290 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 12:07:33,292 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 2 xjuncts. [2018-10-24 12:07:33,321 INFO L267 ElimStorePlain]: Start of recursive call 27: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-24 12:07:33,615 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 12:07:33,621 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 12:07:33,701 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 12:07:33,702 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 2 xjuncts. [2018-10-24 12:07:33,752 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 12:07:33,779 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 12:07:33,780 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 2 xjuncts. [2018-10-24 12:07:33,813 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:07:33,816 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 12:07:33,818 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 12:07:33,819 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:33,822 INFO L267 ElimStorePlain]: Start of recursive call 35: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:33,832 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 12:07:33,904 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 12:07:33,954 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 12:07:33,955 INFO L202 ElimStorePlain]: Needed 36 recursive calls to eliminate 6 variables, input treesize:299, output treesize:48 [2018-10-24 12:07:34,007 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 12:07:34,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:07:34,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 22 [2018-10-24 12:07:34,043 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:07:34,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 12:07:34,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 12:07:34,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=364, Unknown=3, NotChecked=0, Total=462 [2018-10-24 12:07:34,049 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 15 states. [2018-10-24 12:07:34,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:07:34,611 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2018-10-24 12:07:34,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 12:07:34,612 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2018-10-24 12:07:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:07:34,614 INFO L225 Difference]: With dead ends: 53 [2018-10-24 12:07:34,614 INFO L226 Difference]: Without dead ends: 51 [2018-10-24 12:07:34,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=150, Invalid=497, Unknown=3, NotChecked=0, Total=650 [2018-10-24 12:07:34,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-24 12:07:34,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2018-10-24 12:07:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-24 12:07:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-10-24 12:07:34,622 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 32 [2018-10-24 12:07:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:07:34,623 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-10-24 12:07:34,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 12:07:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-10-24 12:07:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 12:07:34,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:07:34,625 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 12:07:34,626 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:07:34,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:07:34,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1933410342, now seen corresponding path program 1 times [2018-10-24 12:07:34,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:07:34,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:07:34,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:07:34,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:07:34,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:07:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:07:34,888 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 12:07:34,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:07:34,888 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:07:34,889 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-10-24 12:07:34,889 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 12:07:34,893 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 12:07:34,893 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:07:34,927 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 12:07:38,395 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:07:38,396 INFO L272 AbstractInterpreter]: Visited 34 different actions 482 times. Merged at 19 different actions 304 times. Widened at 4 different actions 48 times. Found 52 fixpoints after 7 different actions. Largest state had 46 variables. [2018-10-24 12:07:38,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:07:38,423 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:07:38,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:07:38,423 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 12:07:38,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:07:38,436 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:07:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:07:38,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:07:38,871 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 12:07:38,871 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:07:39,054 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 12:07:39,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:07:39,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2018-10-24 12:07:39,087 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:07:39,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 12:07:39,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 12:07:39,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-10-24 12:07:39,089 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 8 states. [2018-10-24 12:07:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:07:39,411 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2018-10-24 12:07:39,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 12:07:39,413 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-10-24 12:07:39,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:07:39,417 INFO L225 Difference]: With dead ends: 117 [2018-10-24 12:07:39,417 INFO L226 Difference]: Without dead ends: 67 [2018-10-24 12:07:39,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-10-24 12:07:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-24 12:07:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2018-10-24 12:07:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-24 12:07:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2018-10-24 12:07:39,439 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 41 [2018-10-24 12:07:39,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:07:39,440 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2018-10-24 12:07:39,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 12:07:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2018-10-24 12:07:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-24 12:07:39,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:07:39,443 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 12:07:39,443 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:07:39,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:07:39,445 INFO L82 PathProgramCache]: Analyzing trace with hash -677671225, now seen corresponding path program 2 times [2018-10-24 12:07:39,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:07:39,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:07:39,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:07:39,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:07:39,447 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:07:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:07:40,042 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2018-10-24 12:07:42,513 WARN L179 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2018-10-24 12:07:43,444 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 12:07:43,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:07:43,445 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:07:43,445 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:07:43,445 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:07:43,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:07:43,446 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 12:07:43,462 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:07:43,462 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:07:43,898 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-24 12:07:43,898 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:07:43,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:07:43,943 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:07:43,945 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 12:07:43,967 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:07:43,968 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:07:43,969 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 12:07:43,969 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:43,975 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:43,986 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:43,987 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:22 [2018-10-24 12:07:44,113 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 12:07:44,117 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 12:07:44,118 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:44,126 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:44,147 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:44,147 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:70, output treesize:66 [2018-10-24 12:07:55,371 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 12:07:55,376 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:07:55,376 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 12:07:55,377 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:55,397 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:07:55,398 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 12:07:55,399 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:55,412 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:07:55,412 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 12:07:55,413 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:07:55,419 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:55,442 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 12:07:55,443 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:99, output treesize:6 [2018-10-24 12:07:55,517 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 12:07:55,518 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:07:56,490 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 12:07:56,844 WARN L179 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 83 [2018-10-24 12:07:56,874 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 12:07:56,879 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 8 xjuncts. [2018-10-24 12:07:57,030 INFO L267 ElimStorePlain]: Start of recursive call 2: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:57,048 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 12:07:57,158 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2018-10-24 12:07:57,175 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 12:07:57,176 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-24 12:07:57,253 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:07:57,315 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 12:07:57,327 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 32 xjuncts. [2018-10-24 12:07:57,510 INFO L267 ElimStorePlain]: Start of recursive call 4: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:57,529 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 12:07:57,665 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-24 12:07:57,672 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:07:57,677 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:07:57,693 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 12:07:57,694 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-10-24 12:07:57,753 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:07:57,808 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:07:57,834 INFO L303 Elim1Store]: Index analysis took 138 ms [2018-10-24 12:07:57,863 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 12:07:57,870 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 16 xjuncts. [2018-10-24 12:07:57,941 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 12:07:57,942 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:07:57,968 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 64 xjuncts. [2018-10-24 12:07:58,441 INFO L267 ElimStorePlain]: Start of recursive call 7: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:07:58,476 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 12:07:59,684 WARN L179 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 231 DAG size of output: 149 [2018-10-24 12:07:59,690 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:07:59,700 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:07:59,782 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 12:07:59,783 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:07:59,955 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:03,497 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:03,501 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:03,834 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 12:08:03,835 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:03,954 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:07,281 INFO L267 ElimStorePlain]: Start of recursive call 11: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:07,317 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 12:08:09,232 WARN L179 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 214 DAG size of output: 132 [2018-10-24 12:08:09,244 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:09,254 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:09,333 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 12:08:09,334 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:09,455 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:13,183 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:13,185 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 12:08:13,186 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:13,584 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:13,595 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:13,674 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 12:08:13,675 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:13,783 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:15,914 INFO L267 ElimStorePlain]: Start of recursive call 14: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:15,918 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 12:08:16,004 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:08:16,035 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 12:08:16,036 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-10-24 12:08:16,051 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:16,067 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 12:08:16,309 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-24 12:08:16,313 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:08:16,313 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 12:08:16,314 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 12:08:16,318 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:16,320 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 12:08:16,321 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 12:08:16,336 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 12:08:16,339 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 12:08:16,554 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:16,570 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:16,579 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:16,604 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 12:08:16,605 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:16,609 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:16,610 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:16,611 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:16,616 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 12:08:16,616 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:16,620 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:08:16,621 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:08:16,622 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 12:08:16,623 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 12:08:16,660 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 12:08:16,662 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 4 xjuncts. [2018-10-24 12:08:16,810 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:08:16,813 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:08:16,816 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:08:16,948 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 12:08:16,949 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 2 xjuncts. [2018-10-24 12:08:16,964 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:16,968 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:16,971 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:16,975 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:17,036 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 12:08:17,037 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:08:17,063 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 64 xjuncts. [2018-10-24 12:08:17,430 INFO L267 ElimStorePlain]: Start of recursive call 20: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:08:17,435 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 12:08:17,477 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 12:08:17,479 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 12:08:17,506 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 12:08:17,507 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 2 xjuncts. [2018-10-24 12:08:17,520 INFO L267 ElimStorePlain]: Start of recursive call 30: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:08:17,564 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 12:08:18,461 WARN L179 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-10-24 12:08:18,465 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:18,467 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 12:08:18,468 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:18,568 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 12:08:18,568 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:18,709 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:18,785 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 12:08:18,787 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 4 xjuncts. [2018-10-24 12:08:18,875 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:18,878 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 12:08:18,878 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:18,881 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 12:08:18,882 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:18,933 INFO L267 ElimStorePlain]: Start of recursive call 33: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:18,976 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 12:08:19,385 WARN L179 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 116 [2018-10-24 12:08:19,411 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:19,558 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:19,577 INFO L303 Elim1Store]: Index analysis took 190 ms [2018-10-24 12:08:19,628 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 12:08:19,629 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:19,718 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:21,773 INFO L267 ElimStorePlain]: Start of recursive call 39: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:21,787 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 12:08:21,877 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 12:08:21,878 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:21,967 INFO L267 ElimStorePlain]: Start of recursive call 41: 5 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:21,974 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 12:08:22,032 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 12:08:22,034 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 12:08:22,064 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 12:08:22,064 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 2 xjuncts. [2018-10-24 12:08:22,079 INFO L267 ElimStorePlain]: Start of recursive call 43: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:08:22,111 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 12:08:22,729 WARN L179 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 163 [2018-10-24 12:08:22,732 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 104 [2018-10-24 12:08:22,733 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:22,898 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:22,914 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:23,010 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 12:08:23,011 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:23,125 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:25,558 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:25,563 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:25,645 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 12:08:25,645 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:25,743 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:27,521 INFO L267 ElimStorePlain]: Start of recursive call 46: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:27,536 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 12:08:27,659 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-24 12:08:27,663 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:27,664 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 12:08:27,665 INFO L267 ElimStorePlain]: Start of recursive call 51: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:08:27,709 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:27,712 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 0 case distinctions, treesize of input 52 treesize of output 51 [2018-10-24 12:08:27,712 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:27,754 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:27,758 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:27,762 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:27,763 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:27,829 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 12:08:27,829 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:08:27,847 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 64 xjuncts. [2018-10-24 12:08:28,087 INFO L267 ElimStorePlain]: Start of recursive call 50: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:28,114 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 12:08:28,346 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2018-10-24 12:08:28,351 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:28,354 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 64 treesize of output 63 [2018-10-24 12:08:28,354 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:28,531 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:28,539 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:28,577 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 61 treesize of output 119 [2018-10-24 12:08:28,584 INFO L267 ElimStorePlain]: Start of recursive call 56: 11 dim-0 vars, End of recursive call: 11 dim-0 vars, and 16 xjuncts. [2018-10-24 12:08:28,782 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 36 treesize of output 28 [2018-10-24 12:08:28,783 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:28,786 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 36 treesize of output 28 [2018-10-24 12:08:28,787 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:28,789 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 38 treesize of output 30 [2018-10-24 12:08:28,790 INFO L267 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:28,795 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 36 treesize of output 28 [2018-10-24 12:08:28,795 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:28,842 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:28,852 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:28,939 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 12:08:28,940 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:29,021 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:31,526 INFO L267 ElimStorePlain]: Start of recursive call 54: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:31,540 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 12:08:31,631 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 12:08:31,632 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 2 xjuncts. [2018-10-24 12:08:31,688 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:31,744 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 12:08:31,751 INFO L267 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 32 xjuncts. [2018-10-24 12:08:31,860 INFO L267 ElimStorePlain]: Start of recursive call 62: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:31,883 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 12:08:32,153 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 86 [2018-10-24 12:08:32,157 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:32,160 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 12:08:32,161 INFO L267 ElimStorePlain]: Start of recursive call 66: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:08:32,240 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 42 treesize of output 38 [2018-10-24 12:08:32,240 INFO L267 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:32,380 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:32,382 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 90 treesize of output 77 [2018-10-24 12:08:32,383 INFO L267 ElimStorePlain]: Start of recursive call 68: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:08:32,460 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 43 [2018-10-24 12:08:32,461 INFO L267 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 2 xjuncts. [2018-10-24 12:08:32,519 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:32,526 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:32,562 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 87 treesize of output 129 [2018-10-24 12:08:32,573 INFO L267 ElimStorePlain]: Start of recursive call 70: 25 dim-0 vars, End of recursive call: 25 dim-0 vars, and 16 xjuncts. [2018-10-24 12:08:33,061 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:33,066 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:33,165 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 87 treesize of output 173 [2018-10-24 12:08:33,166 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:33,261 INFO L267 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:35,293 INFO L267 ElimStorePlain]: Start of recursive call 65: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:35,315 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 12:08:35,518 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2018-10-24 12:08:35,521 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 61 treesize of output 53 [2018-10-24 12:08:35,522 INFO L267 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:35,681 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:35,701 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 58 treesize of output 77 [2018-10-24 12:08:35,703 INFO L267 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 4 xjuncts. [2018-10-24 12:08:35,849 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:35,860 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:35,934 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 12:08:35,935 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:36,004 INFO L267 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:38,023 INFO L267 ElimStorePlain]: Start of recursive call 72: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:38,045 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 12:08:38,207 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2018-10-24 12:08:38,213 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 12:08:38,214 INFO L267 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:38,297 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 12:08:38,297 INFO L267 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 2 xjuncts. [2018-10-24 12:08:38,372 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2018-10-24 12:08:38,373 INFO L267 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:38,522 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 12:08:38,524 INFO L267 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 8 xjuncts. [2018-10-24 12:08:38,589 INFO L267 ElimStorePlain]: Start of recursive call 76: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:38,611 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 12:08:38,760 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2018-10-24 12:08:38,762 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 12:08:38,762 INFO L267 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:38,824 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 42 treesize of output 38 [2018-10-24 12:08:38,825 INFO L267 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:38,935 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 12:08:38,937 INFO L267 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 8 xjuncts. [2018-10-24 12:08:38,998 INFO L267 ElimStorePlain]: Start of recursive call 81: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:39,027 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 12:08:39,442 WARN L179 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 116 [2018-10-24 12:08:39,445 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 12:08:39,446 INFO L267 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:39,698 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:39,725 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 69 treesize of output 84 [2018-10-24 12:08:39,726 INFO L267 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 4 xjuncts. [2018-10-24 12:08:39,884 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 12:08:39,885 INFO L267 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:40,126 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:40,132 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:40,212 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 12:08:40,212 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:40,270 INFO L267 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:42,349 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:42,360 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:42,434 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 12:08:42,435 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:42,495 INFO L267 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:44,373 INFO L267 ElimStorePlain]: Start of recursive call 85: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:44,389 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 12:08:44,596 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-24 12:08:44,602 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:44,606 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:44,648 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 12:08:44,653 INFO L267 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 16 xjuncts. [2018-10-24 12:08:44,722 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 12:08:44,722 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:08:44,742 INFO L267 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 64 xjuncts. [2018-10-24 12:08:44,746 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:08:44,751 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:08:44,767 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 12:08:44,769 INFO L267 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 2 xjuncts. [2018-10-24 12:08:45,172 INFO L267 ElimStorePlain]: Start of recursive call 91: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:45,197 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 12:08:45,435 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2018-10-24 12:08:45,439 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:45,441 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 12:08:45,442 INFO L267 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2018-10-24 12:08:45,583 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:45,603 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 2 case distinctions, treesize of input 91 treesize of output 94 [2018-10-24 12:08:45,605 INFO L267 ElimStorePlain]: Start of recursive call 97: End of recursive call: and 4 xjuncts. [2018-10-24 12:08:45,726 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:45,732 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:08:45,812 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 88 treesize of output 170 [2018-10-24 12:08:45,812 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:08:45,875 INFO L267 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 256 xjuncts. [2018-10-24 12:08:47,797 INFO L267 ElimStorePlain]: Start of recursive call 95: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:08:47,872 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 12:08:47,873 INFO L202 ElimStorePlain]: Needed 98 recursive calls to eliminate 3 variables, input treesize:149, output treesize:86 [2018-10-24 12:08:52,363 WARN L179 SmtUtils]: Spent 4.43 s on a formula simplification that was a NOOP. DAG size: 43 [2018-10-24 12:08:58,555 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-10-24 12:08:59,517 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-10-24 12:08:59,558 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 12:08:59,579 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:08:59,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 37 [2018-10-24 12:08:59,579 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:08:59,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-24 12:08:59,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-24 12:08:59,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1156, Unknown=8, NotChecked=0, Total=1332 [2018-10-24 12:08:59,582 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 28 states. [2018-10-24 12:09:04,298 WARN L179 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-24 12:09:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:09:28,641 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2018-10-24 12:09:28,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-24 12:09:28,641 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 52 [2018-10-24 12:09:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:09:28,644 INFO L225 Difference]: With dead ends: 148 [2018-10-24 12:09:28,644 INFO L226 Difference]: Without dead ends: 79 [2018-10-24 12:09:28,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 80 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=490, Invalid=2808, Unknown=8, NotChecked=0, Total=3306 [2018-10-24 12:09:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-24 12:09:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2018-10-24 12:09:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-24 12:09:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2018-10-24 12:09:28,660 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 52 [2018-10-24 12:09:28,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:09:28,660 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2018-10-24 12:09:28,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-24 12:09:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2018-10-24 12:09:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-24 12:09:28,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:09:28,662 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:09:28,662 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:09:28,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:09:28,663 INFO L82 PathProgramCache]: Analyzing trace with hash -186809392, now seen corresponding path program 3 times [2018-10-24 12:09:28,663 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:09:28,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:09:28,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:09:28,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:09:28,664 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:09:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:09:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-24 12:09:28,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:09:28,963 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:09:28,963 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:09:28,963 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:09:28,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:09:28,963 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:09:28,971 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:09:28,971 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-24 12:09:29,026 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:09:29,026 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:09:29,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:09:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-24 12:09:29,247 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:09:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-24 12:09:29,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:09:29,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2018-10-24 12:09:29,927 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:09:29,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 12:09:29,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 12:09:29,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2018-10-24 12:09:29,929 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 15 states. [2018-10-24 12:09:32,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:09:32,928 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2018-10-24 12:09:32,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 12:09:32,928 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2018-10-24 12:09:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:09:32,930 INFO L225 Difference]: With dead ends: 126 [2018-10-24 12:09:32,930 INFO L226 Difference]: Without dead ends: 98 [2018-10-24 12:09:32,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 129 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2018-10-24 12:09:32,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-24 12:09:32,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2018-10-24 12:09:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-24 12:09:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2018-10-24 12:09:32,945 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 69 [2018-10-24 12:09:32,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:09:32,945 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2018-10-24 12:09:32,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 12:09:32,945 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2018-10-24 12:09:32,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-24 12:09:32,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:09:32,947 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 12:09:32,947 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:09:32,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:09:32,947 INFO L82 PathProgramCache]: Analyzing trace with hash -810085603, now seen corresponding path program 4 times [2018-10-24 12:09:32,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:09:32,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:09:32,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:09:32,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:09:32,949 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:09:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 12:11:26,861 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 12:11:26,865 INFO L168 Benchmark]: Toolchain (without parser) took 255500.70 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 12:11:26,866 INFO L168 Benchmark]: CDTParser took 0.21 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 12:11:26,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.44 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 12:11:26,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.08 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 12:11:26,867 INFO L168 Benchmark]: Boogie Preprocessor took 39.50 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 12:11:26,867 INFO L168 Benchmark]: RCFGBuilder took 732.50 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -723.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2018-10-24 12:11:26,868 INFO L168 Benchmark]: TraceAbstraction took 254301.84 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -472.1 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 12:11:26,870 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 370.44 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 51.08 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 39.50 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 732.50 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -723.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254301.84 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -472.1 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