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-INT.epf -i ../../../trunk/examples/svcomp/loops/insertion_sort_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:28:46,739 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:28:46,741 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:28:46,757 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:28:46,758 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:28:46,759 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:28:46,761 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:28:46,764 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:28:46,766 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:28:46,767 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:28:46,769 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:28:46,769 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:28:46,770 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:28:46,772 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:28:46,773 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:28:46,782 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:28:46,783 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:28:46,785 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:28:46,793 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:28:46,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:28:46,797 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:28:46,799 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:28:46,801 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:28:46,803 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:28:46,804 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:28:46,805 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:28:46,806 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:28:46,807 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:28:46,807 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:28:46,812 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:28:46,812 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:28:46,814 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 15:28:46,814 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 15:28:46,815 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 15:28:46,816 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 15:28:46,817 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 15:28:46,817 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 15:28:46,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:28:46,840 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:28:46,841 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:28:46,841 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:28:46,842 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:28:46,843 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:28:46,843 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:28:46,843 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:28:46,843 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:28:46,843 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:28:46,844 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:28:46,844 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:28:46,845 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:28:46,846 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:28:46,846 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:28:46,846 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:28:46,846 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:28:46,846 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:28:46,847 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:28:46,848 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:28:46,848 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:28:46,848 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:28:46,848 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:28:46,848 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:28:46,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:28:46,849 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:28:46,849 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:28:46,849 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:28:46,850 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:28:46,850 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:28:46,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:28:46,850 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:28:46,850 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:28:46,850 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:28:46,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:28:46,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:28:46,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:28:46,930 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:28:46,931 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:28:46,932 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/insertion_sort_true-unreach-call_true-termination.i [2018-10-27 15:28:46,997 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4ece66986/f90436aaf2b94a92a552fa7b8891104f/FLAG27bca956c [2018-10-27 15:28:47,463 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:28:47,465 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort_true-unreach-call_true-termination.i [2018-10-27 15:28:47,472 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4ece66986/f90436aaf2b94a92a552fa7b8891104f/FLAG27bca956c [2018-10-27 15:28:47,493 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4ece66986/f90436aaf2b94a92a552fa7b8891104f [2018-10-27 15:28:47,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:28:47,505 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:28:47,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:28:47,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:28:47,510 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:28:47,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:28:47" (1/1) ... [2018-10-27 15:28:47,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f02f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47, skipping insertion in model container [2018-10-27 15:28:47,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:28:47" (1/1) ... [2018-10-27 15:28:47,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:28:47,548 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:28:47,748 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:28:47,753 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:28:47,785 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:28:47,808 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:28:47,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47 WrapperNode [2018-10-27 15:28:47,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:28:47,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:28:47,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:28:47,810 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:28:47,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47" (1/1) ... [2018-10-27 15:28:47,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47" (1/1) ... [2018-10-27 15:28:47,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:28:47,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:28:47,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:28:47,866 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:28:47,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47" (1/1) ... [2018-10-27 15:28:47,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47" (1/1) ... [2018-10-27 15:28:47,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47" (1/1) ... [2018-10-27 15:28:47,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47" (1/1) ... [2018-10-27 15:28:47,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47" (1/1) ... [2018-10-27 15:28:47,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47" (1/1) ... [2018-10-27 15:28:47,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47" (1/1) ... [2018-10-27 15:28:47,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:28:47,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:28:47,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:28:47,919 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:28:47,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47" (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 [2018-10-27 15:28:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:28:48,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:28:48,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:28:48,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:28:48,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:28:48,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:28:48,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 15:28:48,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 15:28:48,475 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:28:48,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:28:48 BoogieIcfgContainer [2018-10-27 15:28:48,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:28:48,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:28:48,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:28:48,480 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:28:48,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:28:47" (1/3) ... [2018-10-27 15:28:48,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140dad22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:28:48, skipping insertion in model container [2018-10-27 15:28:48,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:47" (2/3) ... [2018-10-27 15:28:48,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140dad22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:28:48, skipping insertion in model container [2018-10-27 15:28:48,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:28:48" (3/3) ... [2018-10-27 15:28:48,484 INFO L112 eAbstractionObserver]: Analyzing ICFG insertion_sort_true-unreach-call_true-termination.i [2018-10-27 15:28:48,493 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:28:48,502 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:28:48,519 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:28:48,550 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:28:48,551 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:28:48,551 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:28:48,551 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:28:48,551 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:28:48,551 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:28:48,551 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:28:48,551 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:28:48,568 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-10-27 15:28:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 15:28:48,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:28:48,575 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:28:48,577 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:28:48,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:28:48,584 INFO L82 PathProgramCache]: Analyzing trace with hash 277130583, now seen corresponding path program 1 times [2018-10-27 15:28:48,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:28:48,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:48,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:28:48,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:48,637 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:28:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:28:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:48,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:28:48,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 15:28:48,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:28:48,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 15:28:48,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 15:28:48,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 15:28:48,748 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-10-27 15:28:48,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:28:48,771 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2018-10-27 15:28:48,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 15:28:48,773 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-27 15:28:48,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:28:48,780 INFO L225 Difference]: With dead ends: 56 [2018-10-27 15:28:48,780 INFO L226 Difference]: Without dead ends: 26 [2018-10-27 15:28:48,784 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 [2018-10-27 15:28:48,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-27 15:28:48,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-27 15:28:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-27 15:28:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-10-27 15:28:48,822 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2018-10-27 15:28:48,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:28:48,822 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-10-27 15:28:48,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 15:28:48,823 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-10-27 15:28:48,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 15:28:48,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:28:48,824 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:28:48,824 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:28:48,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:28:48,825 INFO L82 PathProgramCache]: Analyzing trace with hash -32556863, now seen corresponding path program 1 times [2018-10-27 15:28:48,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:28:48,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:48,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:28:48,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:48,827 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:28:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:28:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:49,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:28:49,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 15:28:49,088 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:28:49,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 15:28:49,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 15:28:49,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-27 15:28:49,090 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2018-10-27 15:28:49,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:28:49,228 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2018-10-27 15:28:49,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 15:28:49,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-10-27 15:28:49,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:28:49,229 INFO L225 Difference]: With dead ends: 48 [2018-10-27 15:28:49,230 INFO L226 Difference]: Without dead ends: 34 [2018-10-27 15:28:49,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 15:28:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-27 15:28:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2018-10-27 15:28:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-27 15:28:49,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-10-27 15:28:49,237 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 15 [2018-10-27 15:28:49,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:28:49,237 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-10-27 15:28:49,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 15:28:49,238 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-10-27 15:28:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-27 15:28:49,239 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:28:49,239 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:28:49,239 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:28:49,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:28:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash 894306866, now seen corresponding path program 1 times [2018-10-27 15:28:49,240 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:28:49,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:49,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:28:49,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:49,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:28:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:28:49,723 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 13 [2018-10-27 15:28:49,975 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 19 [2018-10-27 15:28:50,301 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 17 [2018-10-27 15:28:50,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:50,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:28:50,614 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:28:50,615 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-10-27 15:28:50,617 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [23], [29], [35], [37], [41], [45], [50], [60], [63], [65], [71], [72], [73], [75] [2018-10-27 15:28:50,674 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:28:50,675 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:28:50,828 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:28:51,375 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:28:51,376 INFO L272 AbstractInterpreter]: Visited 22 different actions 112 times. Merged at 12 different actions 69 times. Widened at 3 different actions 5 times. Found 2 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-27 15:28:51,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:28:51,422 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:28:51,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:28:51,422 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 [2018-10-27 15:28:51,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:28:51,439 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:28:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:28:51,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:28:51,796 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-10-27 15:28:51,801 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:28:51,805 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 37 [2018-10-27 15:28:51,806 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:28:51,822 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:28:51,839 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:28:51,840 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:27 [2018-10-27 15:28:51,980 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 37 treesize of output 29 [2018-10-27 15:28:51,988 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:28:51,990 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:28:51,992 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:28:51,993 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:28:52,002 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 43 [2018-10-27 15:28:52,004 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:28:52,016 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:28:52,026 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:28:52,026 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:43, output treesize:3 [2018-10-27 15:28:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:52,121 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:28:54,426 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 43 treesize of output 37 [2018-10-27 15:28:54,621 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2018-10-27 15:28:54,627 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:28:54,628 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:28:54,629 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:28:54,640 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 48 [2018-10-27 15:28:54,643 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-27 15:28:54,645 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:28:54,646 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:28:54,647 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:28:54,657 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 50 [2018-10-27 15:28:54,660 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-10-27 15:28:54,662 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:28:54,688 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2018-10-27 15:28:54,689 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-27 15:28:54,718 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:28:54,722 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:28:54,722 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:45, output treesize:8 [2018-10-27 15:28:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:54,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:28:54,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2018-10-27 15:28:54,810 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:28:54,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-27 15:28:54,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-27 15:28:54,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=595, Unknown=1, NotChecked=0, Total=702 [2018-10-27 15:28:54,813 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 20 states. [2018-10-27 15:28:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:28:55,851 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2018-10-27 15:28:55,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 15:28:55,862 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-10-27 15:28:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:28:55,870 INFO L225 Difference]: With dead ends: 76 [2018-10-27 15:28:55,872 INFO L226 Difference]: Without dead ends: 74 [2018-10-27 15:28:55,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=240, Invalid=1091, Unknown=1, NotChecked=0, Total=1332 [2018-10-27 15:28:55,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-27 15:28:55,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 45. [2018-10-27 15:28:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-27 15:28:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-10-27 15:28:55,898 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 23 [2018-10-27 15:28:55,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:28:55,899 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-10-27 15:28:55,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-27 15:28:55,899 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-10-27 15:28:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-27 15:28:55,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:28:55,902 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:28:55,903 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:28:55,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:28:55,903 INFO L82 PathProgramCache]: Analyzing trace with hash 307500852, now seen corresponding path program 1 times [2018-10-27 15:28:55,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:28:55,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:55,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:28:55,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:55,907 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:28:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:28:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:56,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:28:56,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 15:28:56,092 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:28:56,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 15:28:56,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 15:28:56,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 15:28:56,093 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2018-10-27 15:28:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:28:56,143 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2018-10-27 15:28:56,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 15:28:56,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-10-27 15:28:56,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:28:56,152 INFO L225 Difference]: With dead ends: 90 [2018-10-27 15:28:56,152 INFO L226 Difference]: Without dead ends: 53 [2018-10-27 15:28:56,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:28:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-27 15:28:56,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2018-10-27 15:28:56,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-27 15:28:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-10-27 15:28:56,161 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 23 [2018-10-27 15:28:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:28:56,161 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-10-27 15:28:56,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 15:28:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-10-27 15:28:56,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-27 15:28:56,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:28:56,163 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] [2018-10-27 15:28:56,163 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:28:56,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:28:56,164 INFO L82 PathProgramCache]: Analyzing trace with hash 692568650, now seen corresponding path program 1 times [2018-10-27 15:28:56,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:28:56,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:56,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:28:56,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:56,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:28:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:28:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:56,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:28:56,852 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:28:56,852 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-10-27 15:28:56,852 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [23], [25], [29], [31], [35], [37], [41], [45], [50], [60], [63], [65], [71], [72], [73], [75] [2018-10-27 15:28:56,854 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:28:56,855 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:28:56,861 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:28:57,154 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:28:57,155 INFO L272 AbstractInterpreter]: Visited 24 different actions 156 times. Merged at 14 different actions 90 times. Widened at 4 different actions 7 times. Found 20 fixpoints after 6 different actions. Largest state had 39 variables. [2018-10-27 15:28:57,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:28:57,197 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:28:57,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:28:57,198 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 [2018-10-27 15:28:57,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:28:57,212 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:28:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:28:57,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:28:57,385 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 36 [2018-10-27 15:28:57,392 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:28:57,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 53 [2018-10-27 15:28:57,394 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:28:57,404 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:28:57,418 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:28:57,419 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:54, output treesize:47 [2018-10-27 15:28:57,503 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:28:57,504 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2018-10-27 15:28:57,524 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:28:57,528 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:28:57,529 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 61 [2018-10-27 15:28:57,531 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:28:57,544 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:28:57,556 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:28:57,556 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:35 [2018-10-27 15:28:57,710 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 28 treesize of output 20 [2018-10-27 15:28:57,752 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:28:57,753 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 20 treesize of output 16 [2018-10-27 15:28:57,754 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:28:57,779 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:28:57,801 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:28:57,802 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:5 [2018-10-27 15:28:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:57,924 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:29:02,257 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 70 treesize of output 62 [2018-10-27 15:29:02,282 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,285 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 69 [2018-10-27 15:29:02,356 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,358 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,358 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,360 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,364 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,367 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,386 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 78 [2018-10-27 15:29:02,388 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-10-27 15:29:02,402 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,404 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,406 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,408 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,410 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 83 [2018-10-27 15:29:02,443 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-10-27 15:29:02,448 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,448 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,449 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:02,453 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2018-10-27 15:29:02,455 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:02,633 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:02,638 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:02,645 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:02,645 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 4 variables, input treesize:72, output treesize:13 [2018-10-27 15:29:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:02,969 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:29:02,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2018-10-27 15:29:02,969 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:29:02,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-27 15:29:02,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-27 15:29:02,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=707, Unknown=2, NotChecked=0, Total=812 [2018-10-27 15:29:02,971 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 20 states. [2018-10-27 15:29:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:29:04,059 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2018-10-27 15:29:04,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 15:29:04,061 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2018-10-27 15:29:04,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:29:04,062 INFO L225 Difference]: With dead ends: 121 [2018-10-27 15:29:04,063 INFO L226 Difference]: Without dead ends: 84 [2018-10-27 15:29:04,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=245, Invalid=1393, Unknown=2, NotChecked=0, Total=1640 [2018-10-27 15:29:04,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-27 15:29:04,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 48. [2018-10-27 15:29:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-27 15:29:04,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2018-10-27 15:29:04,074 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 27 [2018-10-27 15:29:04,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:29:04,074 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2018-10-27 15:29:04,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-27 15:29:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2018-10-27 15:29:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-27 15:29:04,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:29:04,075 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:29:04,076 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:29:04,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:04,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1150796076, now seen corresponding path program 1 times [2018-10-27 15:29:04,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:29:04,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:04,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:29:04,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:04,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:29:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:04,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:04,336 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:29:04,336 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-10-27 15:29:04,336 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [23], [29], [35], [37], [41], [45], [50], [52], [54], [60], [63], [65], [68], [70], [71], [72], [73], [75], [76] [2018-10-27 15:29:04,339 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:29:04,339 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:29:04,346 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:29:04,595 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:29:04,595 INFO L272 AbstractInterpreter]: Visited 27 different actions 175 times. Merged at 15 different actions 94 times. Widened at 4 different actions 8 times. Found 8 fixpoints after 3 different actions. Largest state had 39 variables. [2018-10-27 15:29:04,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:04,632 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:29:04,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:04,633 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 [2018-10-27 15:29:04,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:29:04,644 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:29:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:04,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:29:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:04,822 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:29:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:05,102 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:29:05,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2018-10-27 15:29:05,103 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:29:05,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 15:29:05,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 15:29:05,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-10-27 15:29:05,104 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 9 states. [2018-10-27 15:29:05,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:29:05,372 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2018-10-27 15:29:05,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 15:29:05,372 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2018-10-27 15:29:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:29:05,374 INFO L225 Difference]: With dead ends: 69 [2018-10-27 15:29:05,374 INFO L226 Difference]: Without dead ends: 46 [2018-10-27 15:29:05,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-10-27 15:29:05,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-27 15:29:05,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2018-10-27 15:29:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-27 15:29:05,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-10-27 15:29:05,381 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2018-10-27 15:29:05,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:29:05,381 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-10-27 15:29:05,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 15:29:05,382 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-10-27 15:29:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-27 15:29:05,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:29:05,383 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:29:05,383 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:29:05,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:05,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1621042525, now seen corresponding path program 2 times [2018-10-27 15:29:05,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:29:05,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:05,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:29:05,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:05,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:29:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:05,832 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 20 [2018-10-27 15:29:06,083 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 21 [2018-10-27 15:29:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:06,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:06,264 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:29:06,264 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:29:06,264 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:29:06,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:06,264 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 [2018-10-27 15:29:06,276 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 15:29:06,276 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-27 15:29:06,310 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-27 15:29:06,310 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 15:29:06,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:29:06,530 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-10-27 15:29:06,567 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:06,580 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-10-27 15:29:06,581 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:06,589 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:06,597 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:06,598 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:26 [2018-10-27 15:29:06,698 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2018-10-27 15:29:06,701 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:06,702 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:06,703 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:06,708 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 46 [2018-10-27 15:29:06,708 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:06,718 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:06,728 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:06,728 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:20 [2018-10-27 15:29:06,762 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 26 treesize of output 18 [2018-10-27 15:29:06,765 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 0 case distinctions, treesize of input 18 treesize of output 10 [2018-10-27 15:29:06,766 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:06,767 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:06,769 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:06,769 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-10-27 15:29:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:06,789 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:29:09,224 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 49 treesize of output 43 [2018-10-27 15:29:09,226 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,229 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 50 [2018-10-27 15:29:09,410 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2018-10-27 15:29:09,414 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,416 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,416 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,418 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,419 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,439 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 83 [2018-10-27 15:29:09,444 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2018-10-27 15:29:09,446 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:29:09,446 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:09,448 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,450 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,451 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,453 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,453 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 81 [2018-10-27 15:29:09,476 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-10-27 15:29:09,480 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,497 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 34 treesize of output 52 [2018-10-27 15:29:09,500 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-10-27 15:29:09,504 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,506 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,506 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,508 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,509 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,529 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 81 [2018-10-27 15:29:09,532 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-10-27 15:29:09,534 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,536 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,537 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,539 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,539 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:09,561 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 83 [2018-10-27 15:29:09,565 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-10-27 15:29:09,569 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:29:09,569 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:09,640 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-27 15:29:09,657 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-27 15:29:09,706 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-27 15:29:09,707 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 4 variables, input treesize:62, output treesize:49 [2018-10-27 15:29:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:09,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:29:09,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 34 [2018-10-27 15:29:09,880 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:29:09,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-27 15:29:09,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-27 15:29:09,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=977, Unknown=1, NotChecked=0, Total=1122 [2018-10-27 15:29:09,882 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 20 states. [2018-10-27 15:29:10,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:29:10,826 INFO L93 Difference]: Finished difference Result 116 states and 137 transitions. [2018-10-27 15:29:10,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-27 15:29:10,827 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 31 [2018-10-27 15:29:10,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:29:10,829 INFO L225 Difference]: With dead ends: 116 [2018-10-27 15:29:10,829 INFO L226 Difference]: Without dead ends: 96 [2018-10-27 15:29:10,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=343, Invalid=1818, Unknown=1, NotChecked=0, Total=2162 [2018-10-27 15:29:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-27 15:29:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 63. [2018-10-27 15:29:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-27 15:29:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2018-10-27 15:29:10,839 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 31 [2018-10-27 15:29:10,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:29:10,840 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2018-10-27 15:29:10,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-27 15:29:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2018-10-27 15:29:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-27 15:29:10,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:29:10,841 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:29:10,841 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:29:10,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:10,842 INFO L82 PathProgramCache]: Analyzing trace with hash -693836487, now seen corresponding path program 1 times [2018-10-27 15:29:10,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:29:10,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:10,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 15:29:10,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:10,843 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:29:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:11,393 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-27 15:29:11,617 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-10-27 15:29:12,136 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 17 [2018-10-27 15:29:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:12,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:12,363 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:29:12,363 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-10-27 15:29:12,364 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [23], [29], [31], [35], [37], [41], [45], [50], [60], [63], [65], [71], [72], [73], [75] [2018-10-27 15:29:12,366 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:29:12,366 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:29:12,370 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:29:12,553 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:29:12,553 INFO L272 AbstractInterpreter]: Visited 23 different actions 114 times. Merged at 13 different actions 66 times. Widened at 4 different actions 5 times. Found 7 fixpoints after 4 different actions. Largest state had 39 variables. [2018-10-27 15:29:12,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:12,591 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:29:12,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:12,591 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:29:12,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:29:12,602 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:29:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:12,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:29:12,934 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-10-27 15:29:12,936 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:12,938 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 37 [2018-10-27 15:29:12,939 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:12,944 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:12,953 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:29:12,953 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:27 [2018-10-27 15:29:13,049 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 37 treesize of output 29 [2018-10-27 15:29:13,052 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:13,053 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:13,073 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:13,076 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:13,082 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 43 [2018-10-27 15:29:13,083 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:13,091 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:13,097 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:13,098 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:43, output treesize:3 [2018-10-27 15:29:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:13,112 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:29:13,260 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 43 treesize of output 37 [2018-10-27 15:29:13,303 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:13,304 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:13,305 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:13,312 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 43 [2018-10-27 15:29:13,313 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-27 15:29:13,340 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:13,351 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 0 case distinctions, treesize of input 27 treesize of output 26 [2018-10-27 15:29:13,352 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:13,353 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:13,355 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:13,355 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:13,432 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 45 [2018-10-27 15:29:13,433 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-27 15:29:13,455 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:29:13,462 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:29:13,463 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:45, output treesize:10 [2018-10-27 15:29:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:13,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:29:13,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 31 [2018-10-27 15:29:13,582 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:29:13,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-27 15:29:13,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-27 15:29:13,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2018-10-27 15:29:13,583 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 24 states. [2018-10-27 15:29:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:29:15,243 INFO L93 Difference]: Finished difference Result 181 states and 219 transitions. [2018-10-27 15:29:15,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-27 15:29:15,243 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 35 [2018-10-27 15:29:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:29:15,245 INFO L225 Difference]: With dead ends: 181 [2018-10-27 15:29:15,245 INFO L226 Difference]: Without dead ends: 161 [2018-10-27 15:29:15,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=643, Invalid=3389, Unknown=0, NotChecked=0, Total=4032 [2018-10-27 15:29:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-27 15:29:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 92. [2018-10-27 15:29:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-27 15:29:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2018-10-27 15:29:15,263 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 35 [2018-10-27 15:29:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:29:15,264 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2018-10-27 15:29:15,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-27 15:29:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2018-10-27 15:29:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-27 15:29:15,265 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:29:15,265 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:29:15,266 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:29:15,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:15,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1601373509, now seen corresponding path program 2 times [2018-10-27 15:29:15,266 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:29:15,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:15,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:29:15,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:15,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:29:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:15,476 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-27 15:29:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:16,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:16,051 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:29:16,051 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:29:16,051 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:29:16,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:16,051 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:29:16,060 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 15:29:16,060 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-27 15:29:16,094 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-27 15:29:16,094 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 15:29:16,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:29:16,205 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 36 [2018-10-27 15:29:16,212 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:16,214 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 53 [2018-10-27 15:29:16,215 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,225 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,239 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,239 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:54, output treesize:47 [2018-10-27 15:29:16,288 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:16,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 53 [2018-10-27 15:29:16,299 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:16,302 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:16,303 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 58 [2018-10-27 15:29:16,304 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,314 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,321 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,322 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:29 [2018-10-27 15:29:16,498 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-27 15:29:16,501 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:16,502 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:16,503 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:16,505 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:16,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 53 [2018-10-27 15:29:16,509 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,519 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,528 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,528 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:19 [2018-10-27 15:29:16,571 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 28 treesize of output 20 [2018-10-27 15:29:16,573 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:16,574 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 20 treesize of output 16 [2018-10-27 15:29:16,575 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,579 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,580 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:16,581 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:5 [2018-10-27 15:29:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:16,605 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:29:21,259 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 76 treesize of output 68 [2018-10-27 15:29:21,261 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,264 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 75 [2018-10-27 15:29:21,277 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,279 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,279 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,280 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 72 [2018-10-27 15:29:21,369 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,370 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,373 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,373 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,374 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,383 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,395 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 81 [2018-10-27 15:29:21,397 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-10-27 15:29:21,423 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,437 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,492 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,505 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,518 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,620 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,620 INFO L303 Elim1Store]: Index analysis took 222 ms [2018-10-27 15:29:21,782 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 83 [2018-10-27 15:29:21,784 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-10-27 15:29:21,808 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,821 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,880 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,893 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:21,906 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,007 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,007 INFO L303 Elim1Store]: Index analysis took 222 ms [2018-10-27 15:29:22,124 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 2 case distinctions, treesize of input 49 treesize of output 83 [2018-10-27 15:29:22,127 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-10-27 15:29:22,187 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,237 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,238 INFO L303 Elim1Store]: Index analysis took 110 ms [2018-10-27 15:29:22,407 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 55 [2018-10-27 15:29:22,409 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 3 xjuncts. [2018-10-27 15:29:22,437 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,446 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,507 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,522 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,537 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,655 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,656 INFO L303 Elim1Store]: Index analysis took 245 ms [2018-10-27 15:29:22,797 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 2 case distinctions, treesize of input 44 treesize of output 84 [2018-10-27 15:29:22,799 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-10-27 15:29:22,801 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:29:22,801 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:22,806 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,806 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,809 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,810 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,810 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,820 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:22,832 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 81 [2018-10-27 15:29:22,834 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2018-10-27 15:29:22,942 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:29:22,979 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:29:23,012 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:29:23,051 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:29:23,052 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 5 variables, input treesize:87, output treesize:57 [2018-10-27 15:29:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:23,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:29:23,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 16] total 37 [2018-10-27 15:29:23,180 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:29:23,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-27 15:29:23,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-27 15:29:23,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1182, Unknown=2, NotChecked=0, Total=1332 [2018-10-27 15:29:23,181 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand 23 states. [2018-10-27 15:29:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:29:23,979 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2018-10-27 15:29:23,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-27 15:29:23,979 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2018-10-27 15:29:23,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:29:23,981 INFO L225 Difference]: With dead ends: 141 [2018-10-27 15:29:23,982 INFO L226 Difference]: Without dead ends: 120 [2018-10-27 15:29:23,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=232, Invalid=1658, Unknown=2, NotChecked=0, Total=1892 [2018-10-27 15:29:23,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-27 15:29:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 95. [2018-10-27 15:29:23,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-27 15:29:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2018-10-27 15:29:23,994 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 35 [2018-10-27 15:29:23,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:29:23,994 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2018-10-27 15:29:23,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-27 15:29:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2018-10-27 15:29:23,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-27 15:29:23,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:29:23,996 INFO L375 BasicCegarLoop]: trace histogram [3, 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] [2018-10-27 15:29:23,997 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:29:23,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:23,997 INFO L82 PathProgramCache]: Analyzing trace with hash 99245443, now seen corresponding path program 2 times [2018-10-27 15:29:23,997 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:29:23,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:23,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 15:29:23,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:23,998 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:29:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:24,314 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-10-27 15:29:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:24,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:24,704 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:29:24,704 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:29:24,704 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:29:24,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:24,704 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:29:24,712 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 15:29:24,713 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-27 15:29:24,758 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-27 15:29:24,758 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 15:29:24,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:29:24,958 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-10-27 15:29:24,960 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:24,962 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-10-27 15:29:24,962 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:24,968 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:24,976 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:24,976 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2018-10-27 15:29:25,226 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 26 treesize of output 18 [2018-10-27 15:29:25,229 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 0 case distinctions, treesize of input 18 treesize of output 10 [2018-10-27 15:29:25,229 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:25,232 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:25,233 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:25,233 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-10-27 15:29:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:25,279 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:29:25,526 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 47 treesize of output 41 [2018-10-27 15:29:25,577 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:25,578 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:25,582 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:25,589 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 58 [2018-10-27 15:29:25,591 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-27 15:29:25,592 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:25,596 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 0 case distinctions, treesize of input 25 treesize of output 24 [2018-10-27 15:29:25,597 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:25,603 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:25,603 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:25,605 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:25,613 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 56 [2018-10-27 15:29:25,615 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-27 15:29:25,632 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:25,633 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:25,634 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:47, output treesize:5 [2018-10-27 15:29:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:25,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:29:25,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 13] total 35 [2018-10-27 15:29:25,669 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:29:25,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-27 15:29:25,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-27 15:29:25,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2018-10-27 15:29:25,671 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand 32 states. [2018-10-27 15:29:43,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:29:43,174 INFO L93 Difference]: Finished difference Result 145 states and 170 transitions. [2018-10-27 15:29:43,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-27 15:29:43,174 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 40 [2018-10-27 15:29:43,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:29:43,176 INFO L225 Difference]: With dead ends: 145 [2018-10-27 15:29:43,176 INFO L226 Difference]: Without dead ends: 143 [2018-10-27 15:29:43,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=336, Invalid=2316, Unknown=0, NotChecked=0, Total=2652 [2018-10-27 15:29:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-27 15:29:43,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 105. [2018-10-27 15:29:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-27 15:29:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2018-10-27 15:29:43,188 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 40 [2018-10-27 15:29:43,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:29:43,189 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2018-10-27 15:29:43,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-27 15:29:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2018-10-27 15:29:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-27 15:29:43,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:29:43,190 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:29:43,191 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:29:43,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:43,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1042006481, now seen corresponding path program 3 times [2018-10-27 15:29:43,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:29:43,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:43,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 15:29:43,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:43,192 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:29:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:44,023 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:44,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:44,024 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:29:44,024 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:29:44,024 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:29:44,024 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:44,024 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:29:44,031 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-27 15:29:44,032 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-27 15:29:44,068 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-27 15:29:44,068 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 15:29:44,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:29:44,225 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 36 [2018-10-27 15:29:44,253 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:44,273 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 53 [2018-10-27 15:29:44,273 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:44,286 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:44,298 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:44,298 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:44 [2018-10-27 15:29:44,425 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:44,426 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2018-10-27 15:29:44,431 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:44,433 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:44,434 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 61 [2018-10-27 15:29:44,435 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:44,443 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:44,455 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:29:44,456 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:35 [2018-10-27 15:29:44,494 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 28 treesize of output 20 [2018-10-27 15:29:44,496 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:44,497 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 20 treesize of output 16 [2018-10-27 15:29:44,497 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:44,498 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:44,500 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:44,500 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:5 [2018-10-27 15:29:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-27 15:29:44,537 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:29:52,822 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 70 treesize of output 62 [2018-10-27 15:29:52,828 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,830 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 69 [2018-10-27 15:29:52,886 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:29:52,887 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:52,890 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,891 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,891 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,892 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,893 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,893 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,905 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 78 [2018-10-27 15:29:52,907 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-27 15:29:52,911 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,911 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,912 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,912 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,913 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,914 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:52,925 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 78 [2018-10-27 15:29:52,927 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-10-27 15:29:52,950 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:52,955 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:52,963 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:52,963 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:75, output treesize:16 [2018-10-27 15:29:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-27 15:29:53,021 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:29:53,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 12] total 34 [2018-10-27 15:29:53,021 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:29:53,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-27 15:29:53,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-27 15:29:53,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=990, Unknown=4, NotChecked=0, Total=1122 [2018-10-27 15:29:53,023 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 25 states. [2018-10-27 15:29:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:29:55,503 INFO L93 Difference]: Finished difference Result 235 states and 286 transitions. [2018-10-27 15:29:55,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-27 15:29:55,504 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 39 [2018-10-27 15:29:55,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:29:55,507 INFO L225 Difference]: With dead ends: 235 [2018-10-27 15:29:55,507 INFO L226 Difference]: Without dead ends: 195 [2018-10-27 15:29:55,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=576, Invalid=3842, Unknown=4, NotChecked=0, Total=4422 [2018-10-27 15:29:55,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-27 15:29:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 122. [2018-10-27 15:29:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-27 15:29:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 146 transitions. [2018-10-27 15:29:55,522 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 146 transitions. Word has length 39 [2018-10-27 15:29:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:29:55,522 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 146 transitions. [2018-10-27 15:29:55,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-27 15:29:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 146 transitions. [2018-10-27 15:29:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-27 15:29:55,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:29:55,524 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:29:55,524 INFO L424 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:29:55,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:55,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1926599722, now seen corresponding path program 2 times [2018-10-27 15:29:55,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:29:55,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:55,526 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 15:29:55,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:55,526 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:29:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:56,102 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 13 [2018-10-27 15:29:56,872 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2018-10-27 15:29:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:56,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:56,990 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:29:56,991 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:29:56,991 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:29:56,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:56,991 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:29:57,001 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 15:29:57,001 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-27 15:29:57,051 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-27 15:29:57,051 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 15:29:57,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:29:57,084 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2018-10-27 15:29:57,087 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:57,090 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 29 [2018-10-27 15:29:57,090 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,102 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,113 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:29:57,114 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:30 [2018-10-27 15:29:57,185 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-27 15:29:57,188 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:57,189 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:57,190 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:57,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 43 [2018-10-27 15:29:57,194 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,204 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,216 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,216 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:42, output treesize:24 [2018-10-27 15:29:57,247 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-27 15:29:57,250 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:57,251 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:57,252 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:57,256 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 43 [2018-10-27 15:29:57,257 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,271 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,283 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,284 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:24 [2018-10-27 15:29:57,400 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-27 15:29:57,402 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:57,403 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:57,404 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:29:57,409 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 43 [2018-10-27 15:29:57,410 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,418 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,426 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,427 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:19 [2018-10-27 15:29:57,519 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 26 treesize of output 18 [2018-10-27 15:29:57,522 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 0 case distinctions, treesize of input 18 treesize of output 10 [2018-10-27 15:29:57,523 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,525 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,526 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:57,526 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-10-27 15:29:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:57,547 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:30:02,471 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 55 treesize of output 49 [2018-10-27 15:30:02,475 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,476 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 56 [2018-10-27 15:30:02,479 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,510 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 79 [2018-10-27 15:30:02,756 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2018-10-27 15:30:02,761 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,761 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,761 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,762 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,762 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,763 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,767 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,771 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 66 [2018-10-27 15:30:02,771 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:02,775 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,775 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,775 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,776 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,776 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,786 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,789 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,792 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 66 [2018-10-27 15:30:02,793 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:02,797 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,798 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,799 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,799 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,800 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,801 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,805 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,809 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 64 [2018-10-27 15:30:02,810 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:02,813 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:30:02,813 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:02,819 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,820 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,820 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,823 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 39 [2018-10-27 15:30:02,824 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:02,832 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:30:02,833 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:02,835 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,835 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,835 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,836 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,836 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,837 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,841 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:02,845 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 64 [2018-10-27 15:30:02,846 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:03,002 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,004 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,007 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,007 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,011 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,012 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,018 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,051 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 111 [2018-10-27 15:30:03,057 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 15 xjuncts. [2018-10-27 15:30:03,077 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,084 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,116 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 80 [2018-10-27 15:30:03,120 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 16 xjuncts. [2018-10-27 15:30:03,340 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,341 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,342 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,345 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,346 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,350 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,360 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 67 [2018-10-27 15:30:03,361 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-10-27 15:30:03,365 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,365 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,366 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:03,371 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 41 [2018-10-27 15:30:03,372 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:03,423 INFO L267 ElimStorePlain]: Start of recursive call 4: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-27 15:30:03,459 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-27 15:30:03,485 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-27 15:30:03,516 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-27 15:30:03,516 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 6 variables, input treesize:74, output treesize:43 [2018-10-27 15:30:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:30:03,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:30:03,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 21] total 39 [2018-10-27 15:30:03,718 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:30:03,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-27 15:30:03,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-27 15:30:03,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1291, Unknown=2, NotChecked=0, Total=1482 [2018-10-27 15:30:03,719 INFO L87 Difference]: Start difference. First operand 122 states and 146 transitions. Second operand 21 states. [2018-10-27 15:30:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:30:04,908 INFO L93 Difference]: Finished difference Result 280 states and 343 transitions. [2018-10-27 15:30:04,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-27 15:30:04,909 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 43 [2018-10-27 15:30:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:30:04,911 INFO L225 Difference]: With dead ends: 280 [2018-10-27 15:30:04,911 INFO L226 Difference]: Without dead ends: 228 [2018-10-27 15:30:04,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 54 SyntacticMatches, 15 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=377, Invalid=2171, Unknown=2, NotChecked=0, Total=2550 [2018-10-27 15:30:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-27 15:30:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 130. [2018-10-27 15:30:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-27 15:30:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 156 transitions. [2018-10-27 15:30:04,926 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 156 transitions. Word has length 43 [2018-10-27 15:30:04,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:30:04,926 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 156 transitions. [2018-10-27 15:30:04,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-27 15:30:04,927 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 156 transitions. [2018-10-27 15:30:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-27 15:30:04,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:30:04,928 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:30:04,929 INFO L424 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:30:04,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:30:04,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1130767443, now seen corresponding path program 1 times [2018-10-27 15:30:04,929 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:30:04,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:30:04,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 15:30:04,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:30:04,930 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:30:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:30:05,384 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:30:05,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:30:05,385 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:30:05,385 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-10-27 15:30:05,385 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [23], [29], [31], [35], [37], [41], [45], [50], [52], [54], [60], [63], [65], [68], [70], [71], [72], [73], [75], [76] [2018-10-27 15:30:05,386 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:30:05,387 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:30:05,390 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:30:05,602 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:30:05,603 INFO L272 AbstractInterpreter]: Visited 28 different actions 196 times. Merged at 16 different actions 106 times. Widened at 5 different actions 9 times. Found 17 fixpoints after 6 different actions. Largest state had 40 variables. [2018-10-27 15:30:05,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:30:05,639 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:30:05,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:30:05,639 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:30:05,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:30:05,657 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:30:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:30:05,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:30:05,799 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2018-10-27 15:30:05,806 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:30:05,808 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2018-10-27 15:30:05,808 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:05,818 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:30:05,826 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:30:05,826 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:30 [2018-10-27 15:30:05,995 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:30:05,995 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2018-10-27 15:30:05,998 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:30:05,999 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:06,003 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:30:06,004 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 59 [2018-10-27 15:30:06,004 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:06,013 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:30:06,022 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:30:06,023 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:49, output treesize:27 [2018-10-27 15:30:10,166 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 32 [2018-10-27 15:30:10,169 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:10,170 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:30:10,171 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:30:10,172 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:10,173 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:30:10,174 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 52 [2018-10-27 15:30:10,175 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:10,182 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:30:10,184 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:30:10,184 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:5 [2018-10-27 15:30:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:30:10,229 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:30:16,990 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 74 treesize of output 66 [2018-10-27 15:30:16,993 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:16,995 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 73 [2018-10-27 15:30:17,077 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,078 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,079 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,080 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,080 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,081 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,082 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,086 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,087 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,089 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 91 [2018-10-27 15:30:17,091 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:17,095 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,096 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,096 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,097 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,097 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,097 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,098 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,105 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 84 [2018-10-27 15:30:17,106 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:17,109 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,109 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,109 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,110 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,111 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,113 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 57 [2018-10-27 15:30:17,114 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:17,117 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,117 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,118 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,119 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,119 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,120 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,121 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,127 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,128 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,129 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 90 [2018-10-27 15:30:17,130 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:17,133 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,134 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,135 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,135 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,136 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,137 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,137 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,142 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,142 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,145 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 90 [2018-10-27 15:30:17,146 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:17,148 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,149 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,149 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,151 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,152 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,152 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,165 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 89 [2018-10-27 15:30:17,166 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-10-27 15:30:17,168 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,168 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,169 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:30:17,173 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 56 [2018-10-27 15:30:17,174 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-27 15:30:17,217 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:30:17,232 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:30:17,252 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:30:17,253 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 5 variables, input treesize:82, output treesize:31 [2018-10-27 15:30:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:30:17,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:30:17,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 15] total 37 [2018-10-27 15:30:17,341 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:30:17,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-27 15:30:17,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-27 15:30:17,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1194, Unknown=4, NotChecked=0, Total=1332 [2018-10-27 15:30:17,342 INFO L87 Difference]: Start difference. First operand 130 states and 156 transitions. Second operand 27 states. [2018-10-27 15:31:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:31:00,346 INFO L93 Difference]: Finished difference Result 252 states and 304 transitions. [2018-10-27 15:31:00,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-27 15:31:00,346 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 44 [2018-10-27 15:31:00,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:31:00,349 INFO L225 Difference]: With dead ends: 252 [2018-10-27 15:31:00,350 INFO L226 Difference]: Without dead ends: 200 [2018-10-27 15:31:00,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 65 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=314, Invalid=2542, Unknown=6, NotChecked=0, Total=2862 [2018-10-27 15:31:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-27 15:31:00,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 148. [2018-10-27 15:31:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-27 15:31:00,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 178 transitions. [2018-10-27 15:31:00,369 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 178 transitions. Word has length 44 [2018-10-27 15:31:00,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:31:00,369 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 178 transitions. [2018-10-27 15:31:00,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-27 15:31:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 178 transitions. [2018-10-27 15:31:00,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-27 15:31:00,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:31:00,371 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:31:00,371 INFO L424 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:31:00,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:31:00,371 INFO L82 PathProgramCache]: Analyzing trace with hash 596360874, now seen corresponding path program 3 times [2018-10-27 15:31:00,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:31:00,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:00,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:31:00,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:00,374 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:31:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:31:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:01,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:01,145 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:31:01,145 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:31:01,145 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:31:01,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:01,145 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:31:01,152 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-27 15:31:01,152 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-27 15:31:01,204 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-27 15:31:01,204 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 15:31:01,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:31:01,325 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-27 15:31:01,327 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 [2018-10-27 15:31:01,327 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,338 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,344 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,345 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:14 [2018-10-27 15:31:01,442 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2018-10-27 15:31:01,445 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:01,446 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 39 [2018-10-27 15:31:01,447 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,452 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,460 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,460 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:30 [2018-10-27 15:31:01,555 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-27 15:31:01,557 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:01,587 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:01,596 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:01,600 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 43 [2018-10-27 15:31:01,600 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,609 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,621 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,622 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:43, output treesize:19 [2018-10-27 15:31:01,697 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 26 treesize of output 18 [2018-10-27 15:31:01,699 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 0 case distinctions, treesize of input 18 treesize of output 10 [2018-10-27 15:31:01,700 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,702 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,703 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:01,703 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-10-27 15:31:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:01,722 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:31:09,840 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 64 treesize of output 74 [2018-10-27 15:31:09,859 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 74 [2018-10-27 15:31:09,860 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:09,914 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 60 treesize of output 59 [2018-10-27 15:31:09,915 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:10,031 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 60 treesize of output 52 [2018-10-27 15:31:10,046 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,200 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 65 [2018-10-27 15:31:10,396 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-27 15:31:10,401 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,401 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,405 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,406 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,406 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,443 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 93 [2018-10-27 15:31:10,446 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:10,448 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,449 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,453 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,454 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,455 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,478 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 95 [2018-10-27 15:31:10,481 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:10,483 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:10,483 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:10,485 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,485 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,489 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,490 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,490 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,513 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 95 [2018-10-27 15:31:10,516 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:10,521 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,540 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 71 [2018-10-27 15:31:10,542 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:10,545 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,545 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,548 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,548 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,549 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,572 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 93 [2018-10-27 15:31:10,574 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:10,577 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,577 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,581 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,582 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,582 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,605 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 96 [2018-10-27 15:31:10,607 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:10,777 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,778 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,784 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,789 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,790 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,840 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 121 [2018-10-27 15:31:10,840 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:31:10,855 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 39 xjuncts. [2018-10-27 15:31:10,882 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:10,920 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 91 [2018-10-27 15:31:10,927 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 32 xjuncts. [2018-10-27 15:31:11,361 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-10-27 15:31:11,437 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-10-27 15:31:11,572 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 56 treesize of output 56 [2018-10-27 15:31:11,576 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 51 treesize of output 45 [2018-10-27 15:31:11,576 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:11,605 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:11,625 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 65 [2018-10-27 15:31:11,778 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-27 15:31:11,782 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:11,787 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:11,789 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:11,794 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:11,795 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:11,847 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 124 [2018-10-27 15:31:11,848 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:31:11,860 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 39 xjuncts. [2018-10-27 15:31:11,907 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:11,965 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:11,999 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,083 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,092 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,201 INFO L303 Elim1Store]: Index analysis took 340 ms [2018-10-27 15:31:12,238 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 126 [2018-10-27 15:31:12,238 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:31:12,251 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 39 xjuncts. [2018-10-27 15:31:12,277 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,292 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,294 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,300 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,301 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,352 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 126 [2018-10-27 15:31:12,353 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:31:12,364 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 39 xjuncts. [2018-10-27 15:31:12,375 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:12,376 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:12,378 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,381 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,384 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,391 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,391 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,442 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 124 [2018-10-27 15:31:12,443 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:31:12,452 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 39 xjuncts. [2018-10-27 15:31:12,454 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:12,454 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:12,482 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:12,519 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 91 [2018-10-27 15:31:12,524 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 32 xjuncts. [2018-10-27 15:31:14,296 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,308 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,309 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,311 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,311 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,332 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 90 [2018-10-27 15:31:14,334 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:14,339 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,357 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 42 treesize of output 68 [2018-10-27 15:31:14,359 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:14,585 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 12 xjuncts. [2018-10-27 15:31:14,762 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,764 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 53 [2018-10-27 15:31:14,839 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,840 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,848 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,849 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,849 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,868 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 83 [2018-10-27 15:31:14,870 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:14,873 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,874 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,878 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,878 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,879 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,901 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 81 [2018-10-27 15:31:14,904 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:14,906 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:14,907 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:14,909 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,909 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,913 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,914 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,915 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,937 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 81 [2018-10-27 15:31:14,939 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:14,941 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,941 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,945 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,945 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,946 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,968 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 83 [2018-10-27 15:31:14,971 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:14,972 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:14,973 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:14,978 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:14,997 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 34 treesize of output 56 [2018-10-27 15:31:14,998 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:15,084 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-27 15:31:15,274 INFO L267 ElimStorePlain]: Start of recursive call 16: 3 dim-1 vars, End of recursive call: and 11 xjuncts. [2018-10-27 15:31:15,556 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 10 xjuncts. [2018-10-27 15:31:15,561 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 66 treesize of output 59 [2018-10-27 15:31:15,564 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 9 treesize of output 13 [2018-10-27 15:31:15,565 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:15,581 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 49 treesize of output 47 [2018-10-27 15:31:15,585 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,586 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 51 [2018-10-27 15:31:15,659 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,677 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 2 case distinctions, treesize of input 35 treesize of output 59 [2018-10-27 15:31:15,678 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:15,681 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:15,682 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:15,684 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,684 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,688 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,689 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,690 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,712 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 2 case distinctions, treesize of input 43 treesize of output 83 [2018-10-27 15:31:15,714 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:15,716 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:15,717 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:15,719 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,720 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,723 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,724 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,725 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,748 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 83 [2018-10-27 15:31:15,750 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:15,752 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,753 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,756 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,756 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,757 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,778 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 2 case distinctions, treesize of input 47 treesize of output 85 [2018-10-27 15:31:15,780 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:15,783 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,783 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,787 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,788 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,789 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:15,809 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 85 [2018-10-27 15:31:15,812 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:15,912 INFO L267 ElimStorePlain]: Start of recursive call 39: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:31:15,943 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:31:15,977 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:31:16,117 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:31:16,117 INFO L202 ElimStorePlain]: Needed 46 recursive calls to eliminate 8 variables, input treesize:86, output treesize:42 [2018-10-27 15:31:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:16,241 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:31:16,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 39 [2018-10-27 15:31:16,241 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:31:16,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-27 15:31:16,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-27 15:31:16,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1319, Unknown=3, NotChecked=0, Total=1482 [2018-10-27 15:31:16,243 INFO L87 Difference]: Start difference. First operand 148 states and 178 transitions. Second operand 24 states. [2018-10-27 15:31:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:31:17,434 INFO L93 Difference]: Finished difference Result 303 states and 363 transitions. [2018-10-27 15:31:17,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-27 15:31:17,435 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 43 [2018-10-27 15:31:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:31:17,438 INFO L225 Difference]: With dead ends: 303 [2018-10-27 15:31:17,438 INFO L226 Difference]: Without dead ends: 220 [2018-10-27 15:31:17,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 60 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=350, Invalid=2299, Unknown=3, NotChecked=0, Total=2652 [2018-10-27 15:31:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-27 15:31:17,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 160. [2018-10-27 15:31:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-27 15:31:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 193 transitions. [2018-10-27 15:31:17,456 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 193 transitions. Word has length 43 [2018-10-27 15:31:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:31:17,456 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 193 transitions. [2018-10-27 15:31:17,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-27 15:31:17,457 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 193 transitions. [2018-10-27 15:31:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-27 15:31:17,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:31:17,458 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:31:17,458 INFO L424 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:31:17,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:31:17,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1833906732, now seen corresponding path program 4 times [2018-10-27 15:31:17,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:31:17,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:17,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 15:31:17,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:17,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:31:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:31:17,666 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-27 15:31:17,962 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-27 15:31:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:18,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:18,558 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:31:18,558 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:31:18,558 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:31:18,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:18,558 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:31:18,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:31:18,566 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:31:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:31:18,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:31:18,728 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-10-27 15:31:18,736 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 13 treesize of output 12 [2018-10-27 15:31:18,737 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:18,739 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:18,760 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 25 treesize of output 21 [2018-10-27 15:31:18,782 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-27 15:31:18,783 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:18,788 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:18,801 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:31:18,802 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:57, output treesize:31 [2018-10-27 15:31:19,375 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2018-10-27 15:31:19,399 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,403 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,404 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 0 case distinctions, treesize of input 26 treesize of output 54 [2018-10-27 15:31:19,404 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:19,410 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:19,427 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 15:31:19,427 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:50, output treesize:38 [2018-10-27 15:31:19,540 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2018-10-27 15:31:19,543 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,544 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,545 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,547 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,550 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 85 [2018-10-27 15:31:19,551 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:19,563 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:19,581 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 15:31:19,581 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:56, output treesize:38 [2018-10-27 15:31:19,687 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2018-10-27 15:31:19,692 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,693 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,694 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,694 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,698 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 85 [2018-10-27 15:31:19,698 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:19,713 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:19,731 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 1 xjuncts. [2018-10-27 15:31:19,732 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:57, output treesize:35 [2018-10-27 15:31:19,819 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 32 [2018-10-27 15:31:19,822 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,824 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,825 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:19,825 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:19,827 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:19,828 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 51 [2018-10-27 15:31:19,829 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:19,840 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:19,846 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:19,847 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:51, output treesize:5 [2018-10-27 15:31:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:19,893 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:31:26,659 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 59 treesize of output 55 [2018-10-27 15:31:26,662 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2018-10-27 15:31:26,679 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 61 [2018-10-27 15:31:26,726 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 84 [2018-10-27 15:31:27,445 WARN L179 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 165 [2018-10-27 15:31:27,457 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,458 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,459 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,472 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,481 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:27,521 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 116 [2018-10-27 15:31:27,521 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:31:27,526 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 11 xjuncts. [2018-10-27 15:31:27,560 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,561 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,562 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,574 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,581 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:27,622 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 116 [2018-10-27 15:31:27,622 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:31:27,627 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 11 xjuncts. [2018-10-27 15:31:27,680 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,680 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,681 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,694 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,702 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:27,741 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 117 [2018-10-27 15:31:27,741 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:31:27,745 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 11 xjuncts. [2018-10-27 15:31:27,883 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,892 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:27,907 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:28,050 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:28,128 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:28,128 INFO L303 Elim1Store]: Index analysis took 382 ms [2018-10-27 15:31:28,169 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 118 [2018-10-27 15:31:28,170 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:31:28,174 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 11 xjuncts. [2018-10-27 15:31:28,311 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:28,311 INFO L303 Elim1Store]: Index analysis took 136 ms [2018-10-27 15:31:28,344 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 76 [2018-10-27 15:31:28,346 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 8 xjuncts. [2018-10-27 15:31:28,396 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:28,406 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:28,430 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 80 [2018-10-27 15:31:28,432 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 8 xjuncts. [2018-10-27 15:31:28,443 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:28,443 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:28,444 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:28,458 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:28,467 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:28,505 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 118 [2018-10-27 15:31:28,505 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:31:28,509 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 11 xjuncts. [2018-10-27 15:31:30,128 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:30,129 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:30,140 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 59 [2018-10-27 15:31:30,141 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:30,146 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:30,166 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 2 case distinctions, treesize of input 47 treesize of output 72 [2018-10-27 15:31:30,167 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:30,251 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:30,251 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:30,252 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:30,258 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:30,280 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 3 case distinctions, treesize of input 53 treesize of output 107 [2018-10-27 15:31:30,283 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 6 xjuncts. [2018-10-27 15:31:31,842 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:31,844 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:31,844 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:31,852 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:31,876 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 3 case distinctions, treesize of input 53 treesize of output 102 [2018-10-27 15:31:31,879 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 6 xjuncts. [2018-10-27 15:31:31,883 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:31,906 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 2 case distinctions, treesize of input 47 treesize of output 72 [2018-10-27 15:31:31,907 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:31,910 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:31,910 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:31,923 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 54 [2018-10-27 15:31:31,924 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:33,301 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 52 [2018-10-27 15:31:33,302 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:33,305 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:33,307 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:33,311 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:33,318 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 67 [2018-10-27 15:31:33,319 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:33,332 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2018-10-27 15:31:33,333 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:33,924 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 90 [2018-10-27 15:31:33,924 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:31:33,931 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 64 xjuncts. [2018-10-27 15:31:33,940 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:33,941 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:33,954 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:34,013 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 50 treesize of output 135 [2018-10-27 15:31:34,014 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-27 15:31:34,042 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 116 xjuncts. [2018-10-27 15:31:34,053 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:34,054 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:34,068 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:34,124 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 54 treesize of output 137 [2018-10-27 15:31:34,124 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-27 15:31:34,168 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 116 xjuncts. [2018-10-27 15:31:34,197 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:34,240 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 89 [2018-10-27 15:31:34,245 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 32 xjuncts. [2018-10-27 15:31:38,971 INFO L267 ElimStorePlain]: Start of recursive call 5: 7 dim-1 vars, End of recursive call: and 28 xjuncts. [2018-10-27 15:31:39,477 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 59 [2018-10-27 15:31:39,630 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-27 15:31:39,634 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,636 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,640 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,647 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 65 [2018-10-27 15:31:39,648 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:39,658 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,660 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2018-10-27 15:31:39,660 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:39,664 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,666 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,670 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,676 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 64 [2018-10-27 15:31:39,678 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:39,681 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,683 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,687 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,694 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 62 [2018-10-27 15:31:39,695 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:39,698 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,699 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,704 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,710 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 62 [2018-10-27 15:31:39,711 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:39,715 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,717 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,720 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,727 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 64 [2018-10-27 15:31:39,728 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:39,746 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 40 treesize of output 50 [2018-10-27 15:31:39,747 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:39,896 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,916 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 2 case distinctions, treesize of input 39 treesize of output 51 [2018-10-27 15:31:39,917 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:39,925 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,925 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,932 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:39,958 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 84 [2018-10-27 15:31:39,961 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 11 xjuncts. [2018-10-27 15:31:40,036 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 39 treesize of output 54 [2018-10-27 15:31:40,038 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 8 xjuncts. [2018-10-27 15:31:40,227 INFO L267 ElimStorePlain]: Start of recursive call 26: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-10-27 15:31:40,626 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 22 xjuncts. [2018-10-27 15:31:40,984 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 21 xjuncts. [2018-10-27 15:31:41,312 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 21 xjuncts. [2018-10-27 15:31:41,632 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: and 18 xjuncts. [2018-10-27 15:31:41,633 INFO L202 ElimStorePlain]: Needed 36 recursive calls to eliminate 9 variables, input treesize:106, output treesize:292 [2018-10-27 15:31:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:41,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:31:41,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 52 [2018-10-27 15:31:41,959 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:31:41,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-27 15:31:41,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-27 15:31:41,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=2349, Unknown=3, NotChecked=0, Total=2652 [2018-10-27 15:31:41,961 INFO L87 Difference]: Start difference. First operand 160 states and 193 transitions. Second operand 35 states. [2018-10-27 15:31:42,679 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2018-10-27 15:31:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:31:43,229 INFO L93 Difference]: Finished difference Result 194 states and 232 transitions. [2018-10-27 15:31:43,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-27 15:31:43,230 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 43 [2018-10-27 15:31:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:31:43,231 INFO L225 Difference]: With dead ends: 194 [2018-10-27 15:31:43,232 INFO L226 Difference]: Without dead ends: 192 [2018-10-27 15:31:43,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=513, Invalid=3516, Unknown=3, NotChecked=0, Total=4032 [2018-10-27 15:31:43,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-10-27 15:31:43,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 164. [2018-10-27 15:31:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-27 15:31:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 199 transitions. [2018-10-27 15:31:43,250 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 199 transitions. Word has length 43 [2018-10-27 15:31:43,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:31:43,250 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 199 transitions. [2018-10-27 15:31:43,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-27 15:31:43,250 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 199 transitions. [2018-10-27 15:31:43,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-27 15:31:43,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:31:43,251 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 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] [2018-10-27 15:31:43,252 INFO L424 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:31:43,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:31:43,252 INFO L82 PathProgramCache]: Analyzing trace with hash -181004637, now seen corresponding path program 3 times [2018-10-27 15:31:43,252 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:31:43,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:43,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:31:43,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:43,253 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:31:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:31:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 15:31:43,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:43,741 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:31:43,741 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:31:43,742 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:31:43,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:43,742 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:31:43,750 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-27 15:31:43,750 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-27 15:31:43,778 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-27 15:31:43,778 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 15:31:43,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:31:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 15:31:43,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:31:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 15:31:44,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:31:44,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2018-10-27 15:31:44,062 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:31:44,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-27 15:31:44,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-27 15:31:44,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-10-27 15:31:44,063 INFO L87 Difference]: Start difference. First operand 164 states and 199 transitions. Second operand 13 states. [2018-10-27 15:31:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:31:44,265 INFO L93 Difference]: Finished difference Result 241 states and 290 transitions. [2018-10-27 15:31:44,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 15:31:44,266 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2018-10-27 15:31:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:31:44,267 INFO L225 Difference]: With dead ends: 241 [2018-10-27 15:31:44,267 INFO L226 Difference]: Without dead ends: 217 [2018-10-27 15:31:44,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 87 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2018-10-27 15:31:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-27 15:31:44,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 178. [2018-10-27 15:31:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-27 15:31:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 212 transitions. [2018-10-27 15:31:44,290 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 212 transitions. Word has length 49 [2018-10-27 15:31:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:31:44,290 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 212 transitions. [2018-10-27 15:31:44,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-27 15:31:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 212 transitions. [2018-10-27 15:31:44,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-27 15:31:44,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:31:44,293 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:31:44,293 INFO L424 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:31:44,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:31:44,293 INFO L82 PathProgramCache]: Analyzing trace with hash 238443826, now seen corresponding path program 4 times [2018-10-27 15:31:44,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:31:44,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:44,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 15:31:44,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:44,295 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:31:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:31:44,803 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-10-27 15:31:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:45,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:45,217 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:31:45,217 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:31:45,218 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:31:45,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:45,218 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:31:45,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:31:45,226 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:31:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:31:45,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:31:45,304 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2018-10-27 15:31:45,306 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:45,308 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-10-27 15:31:45,309 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:45,316 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:45,324 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:45,324 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:25 [2018-10-27 15:31:45,548 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2018-10-27 15:31:45,550 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:45,552 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:45,553 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:45,558 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 55 [2018-10-27 15:31:45,559 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:45,569 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:45,580 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:45,580 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:19 [2018-10-27 15:31:45,720 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 36 treesize of output 28 [2018-10-27 15:31:45,722 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:45,723 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:45,723 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:45,726 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 0 case distinctions, treesize of input 28 treesize of output 37 [2018-10-27 15:31:45,727 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:45,731 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:45,733 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:45,733 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:3 [2018-10-27 15:31:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:45,778 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:31:46,371 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 53 treesize of output 47 [2018-10-27 15:31:46,375 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,378 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 54 [2018-10-27 15:31:46,455 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,456 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,457 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,457 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,464 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,484 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 95 [2018-10-27 15:31:46,487 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:46,489 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,510 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 41 treesize of output 63 [2018-10-27 15:31:46,511 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:46,515 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,516 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,517 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,518 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,599 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,667 INFO L303 Elim1Store]: Index analysis took 154 ms [2018-10-27 15:31:46,742 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 97 [2018-10-27 15:31:46,744 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:46,776 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,794 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 36 treesize of output 58 [2018-10-27 15:31:46,796 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:46,800 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,800 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,801 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,802 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,808 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,826 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 97 [2018-10-27 15:31:46,828 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:46,833 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,833 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,834 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,835 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,841 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,862 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 98 [2018-10-27 15:31:46,864 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:46,868 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,869 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,869 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,870 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,876 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:46,895 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 99 [2018-10-27 15:31:46,896 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 4 xjuncts. [2018-10-27 15:31:46,998 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:31:47,025 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:31:47,059 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:31:47,060 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 6 variables, input treesize:64, output treesize:44 [2018-10-27 15:31:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:47,136 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:31:47,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 16] total 37 [2018-10-27 15:31:47,136 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:31:47,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-27 15:31:47,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-27 15:31:47,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2018-10-27 15:31:47,137 INFO L87 Difference]: Start difference. First operand 178 states and 212 transitions. Second operand 30 states. [2018-10-27 15:31:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:31:48,547 INFO L93 Difference]: Finished difference Result 277 states and 329 transitions. [2018-10-27 15:31:48,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-27 15:31:48,547 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 48 [2018-10-27 15:31:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:31:48,550 INFO L225 Difference]: With dead ends: 277 [2018-10-27 15:31:48,550 INFO L226 Difference]: Without dead ends: 275 [2018-10-27 15:31:48,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 72 SyntacticMatches, 13 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=423, Invalid=2769, Unknown=0, NotChecked=0, Total=3192 [2018-10-27 15:31:48,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-10-27 15:31:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 222. [2018-10-27 15:31:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-10-27 15:31:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 264 transitions. [2018-10-27 15:31:48,603 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 264 transitions. Word has length 48 [2018-10-27 15:31:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:31:48,604 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 264 transitions. [2018-10-27 15:31:48,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-27 15:31:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 264 transitions. [2018-10-27 15:31:48,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-27 15:31:48,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:31:48,605 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:31:48,605 INFO L424 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:31:48,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:31:48,606 INFO L82 PathProgramCache]: Analyzing trace with hash 109282112, now seen corresponding path program 4 times [2018-10-27 15:31:48,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:31:48,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:48,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:31:48,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:48,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:31:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:31:49,084 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 10 [2018-10-27 15:31:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:49,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:49,375 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:31:49,376 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:31:49,376 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:31:49,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:49,376 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:31:49,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:31:49,384 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:31:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:31:49,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:31:49,656 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-10-27 15:31:49,669 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:49,670 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 37 [2018-10-27 15:31:49,671 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:49,678 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:49,687 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:31:49,687 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:27 [2018-10-27 15:31:49,750 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 37 treesize of output 29 [2018-10-27 15:31:49,752 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:49,753 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:49,754 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:49,754 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:49,760 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 43 [2018-10-27 15:31:49,761 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:49,768 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:49,775 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:49,775 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:43, output treesize:3 [2018-10-27 15:31:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:49,792 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:31:49,944 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 43 treesize of output 37 [2018-10-27 15:31:49,994 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:49,996 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 0 case distinctions, treesize of input 27 treesize of output 26 [2018-10-27 15:31:49,996 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:49,998 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:50,000 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:50,000 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:50,009 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 45 [2018-10-27 15:31:50,010 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:50,013 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:50,014 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:50,014 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:50,023 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 43 [2018-10-27 15:31:50,024 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:50,044 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:31:50,051 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:31:50,051 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:45, output treesize:10 [2018-10-27 15:31:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:50,183 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:31:50,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2018-10-27 15:31:50,183 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:31:50,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-27 15:31:50,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-27 15:31:50,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2018-10-27 15:31:50,184 INFO L87 Difference]: Start difference. First operand 222 states and 264 transitions. Second operand 27 states. [2018-10-27 15:31:54,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:31:54,488 INFO L93 Difference]: Finished difference Result 584 states and 712 transitions. [2018-10-27 15:31:54,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-27 15:31:54,489 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 47 [2018-10-27 15:31:54,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:31:54,493 INFO L225 Difference]: With dead ends: 584 [2018-10-27 15:31:54,493 INFO L226 Difference]: Without dead ends: 501 [2018-10-27 15:31:54,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 70 SyntacticMatches, 10 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1240, Invalid=8860, Unknown=0, NotChecked=0, Total=10100 [2018-10-27 15:31:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2018-10-27 15:31:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 296. [2018-10-27 15:31:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-10-27 15:31:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 359 transitions. [2018-10-27 15:31:54,538 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 359 transitions. Word has length 47 [2018-10-27 15:31:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:31:54,538 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 359 transitions. [2018-10-27 15:31:54,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-27 15:31:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 359 transitions. [2018-10-27 15:31:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-27 15:31:54,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:31:54,540 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2018-10-27 15:31:54,540 INFO L424 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:31:54,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:31:54,540 INFO L82 PathProgramCache]: Analyzing trace with hash -2102023659, now seen corresponding path program 1 times [2018-10-27 15:31:54,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:31:54,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:54,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:31:54,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:31:54,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:31:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:31:55,082 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 13 [2018-10-27 15:31:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:55,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:55,900 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:31:55,901 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2018-10-27 15:31:55,901 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [23], [25], [29], [31], [35], [37], [41], [45], [50], [52], [54], [60], [63], [65], [68], [70], [71], [72], [73], [75], [76] [2018-10-27 15:31:55,902 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:31:55,903 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:31:55,906 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:31:56,120 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:31:56,120 INFO L272 AbstractInterpreter]: Visited 29 different actions 213 times. Merged at 17 different actions 112 times. Widened at 5 different actions 10 times. Found 27 fixpoints after 7 different actions. Largest state had 40 variables. [2018-10-27 15:31:56,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:31:56,147 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:31:56,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:31:56,147 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:31:56,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:31:56,157 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:31:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:31:56,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:31:56,552 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-10-27 15:31:56,555 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:56,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 37 [2018-10-27 15:31:56,557 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:56,563 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:56,576 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:31:56,576 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:32 [2018-10-27 15:31:56,684 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2018-10-27 15:31:56,687 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:56,688 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:56,690 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:56,690 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:56,691 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:56,700 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 93 [2018-10-27 15:31:56,700 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:56,743 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:56,759 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:31:56,759 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:48 [2018-10-27 15:31:56,946 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 54 [2018-10-27 15:31:56,949 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:56,951 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:56,951 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:56,953 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:56,954 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:56,955 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:56,969 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 116 [2018-10-27 15:31:56,970 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:56,988 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:57,005 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:31:57,005 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:83, output treesize:54 [2018-10-27 15:31:57,137 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2018-10-27 15:31:57,140 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:57,141 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:57,141 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:57,142 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:57,152 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 79 [2018-10-27 15:31:57,153 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:57,167 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:57,180 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:31:57,181 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:70, output treesize:25 [2018-10-27 15:31:57,578 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 55 treesize of output 51 [2018-10-27 15:31:57,581 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:57,582 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:57,586 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 0 case distinctions, treesize of input 47 treesize of output 46 [2018-10-27 15:31:57,586 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:57,612 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:57,614 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 0 case distinctions, treesize of input 22 treesize of output 22 [2018-10-27 15:31:57,614 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:57,639 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:57,640 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:57,646 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:57,690 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 102 [2018-10-27 15:31:57,696 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 16 xjuncts. [2018-10-27 15:31:57,755 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:57,765 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:31:57,765 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:67, output treesize:3 [2018-10-27 15:31:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:31:57,843 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:31:58,927 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 137 treesize of output 127 [2018-10-27 15:31:58,959 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:58,961 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 119 [2018-10-27 15:31:58,998 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:58,998 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:59,002 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,002 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,003 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,003 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,004 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,004 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,018 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 156 [2018-10-27 15:31:59,023 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,023 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,024 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,024 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,025 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,025 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,026 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,027 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,027 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,060 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 207 [2018-10-27 15:31:59,347 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-10-27 15:31:59,352 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,353 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,354 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:59,354 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,355 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,356 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,356 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,357 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,358 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,358 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,360 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:59,364 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,367 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,373 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 172 [2018-10-27 15:31:59,374 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:59,378 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,379 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,380 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:59,380 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,381 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,382 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,382 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,383 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,384 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,384 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,386 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:59,389 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,393 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,398 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 172 [2018-10-27 15:31:59,399 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:59,403 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:59,403 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:59,406 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,407 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,408 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:59,409 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,409 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,410 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,410 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,411 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,412 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,412 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,414 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:59,417 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,421 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,426 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 172 [2018-10-27 15:31:59,426 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:59,430 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:59,430 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:59,433 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,434 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,434 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:59,435 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,436 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,436 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,437 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,437 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,438 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,439 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,440 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:59,443 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,447 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,452 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 172 [2018-10-27 15:31:59,453 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:59,471 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:59,471 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:59,651 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,652 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,653 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:31:59,654 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,654 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,655 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,655 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,656 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,656 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,657 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,658 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,658 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,659 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,661 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,662 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,667 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,675 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,698 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 189 [2018-10-27 15:31:59,700 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-10-27 15:31:59,762 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:31:59,780 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:31:59,800 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:31:59,807 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,833 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 136 [2018-10-27 15:31:59,893 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:31:59,894 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-10-27 15:31:59,897 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,898 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,898 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,899 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,900 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,900 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,913 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 169 [2018-10-27 15:31:59,917 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,918 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,918 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,919 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,919 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,920 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,921 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,921 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,922 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:31:59,959 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 207 [2018-10-27 15:32:00,255 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-10-27 15:32:00,261 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,261 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,262 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:00,263 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,263 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,264 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,265 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,265 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,266 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,267 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,276 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,277 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,277 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,278 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,280 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,284 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,291 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,297 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,317 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 250 [2018-10-27 15:32:00,319 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:00,322 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:00,322 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:00,328 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,329 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,331 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:00,332 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,332 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,333 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,334 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,334 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,335 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,336 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,336 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,337 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,338 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,338 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,341 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,345 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,352 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,357 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,378 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 250 [2018-10-27 15:32:00,380 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:00,385 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:00,385 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:00,388 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:00,388 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:00,402 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,403 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,404 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:00,404 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,405 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,405 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,406 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,406 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,407 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,408 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,408 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,409 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,410 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,410 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,413 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,417 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,424 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,429 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,447 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 250 [2018-10-27 15:32:00,449 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:00,453 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,454 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,455 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:00,455 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,456 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,457 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,458 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,458 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,459 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,459 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,460 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,461 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,461 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,462 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,465 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,469 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,476 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,482 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,503 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 250 [2018-10-27 15:32:00,505 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:00,713 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,714 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,715 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:00,715 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,716 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,716 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,717 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,717 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,718 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,719 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,724 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,729 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,732 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,744 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 136 [2018-10-27 15:32:00,745 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:00,789 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:32:00,811 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:32:00,816 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,816 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,817 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,818 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,818 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,819 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,830 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 175 [2018-10-27 15:32:00,836 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,836 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,837 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,837 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,838 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,839 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,839 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,840 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,842 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:00,878 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 207 [2018-10-27 15:32:01,163 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-10-27 15:32:01,168 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,168 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,169 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:01,170 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,170 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,171 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,172 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,172 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,173 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,174 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,175 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:01,179 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,182 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,192 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 172 [2018-10-27 15:32:01,193 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:01,197 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,198 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,199 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:01,201 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,202 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,202 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,204 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,204 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,206 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,206 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,208 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:01,215 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,221 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,228 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 172 [2018-10-27 15:32:01,228 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:01,232 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:01,232 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:01,237 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,237 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,239 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:01,241 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,241 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,243 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,243 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,246 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,246 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,248 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,250 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:01,254 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,260 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,267 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 172 [2018-10-27 15:32:01,268 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:01,270 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:01,271 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:01,274 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:01,274 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:01,280 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,282 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,284 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:01,284 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,286 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,286 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,289 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,289 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,291 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,291 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,293 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:01,300 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,304 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,313 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 172 [2018-10-27 15:32:01,313 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:01,533 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,535 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,536 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:01,540 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,541 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,541 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,543 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,543 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,545 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,545 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,547 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,547 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,549 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,551 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,553 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,563 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,571 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,605 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 189 [2018-10-27 15:32:01,607 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:01,672 INFO L267 ElimStorePlain]: Start of recursive call 28: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:32:01,694 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:32:01,769 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,774 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,778 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,779 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,840 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 98 treesize of output 173 [2018-10-27 15:32:01,846 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,847 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,852 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,857 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,861 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,862 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:01,963 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 12 case distinctions, treesize of input 140 treesize of output 244 [2018-10-27 15:32:06,748 WARN L179 SmtUtils]: Spent 4.76 s on a formula simplification. DAG size of input: 926 DAG size of output: 580 [2018-10-27 15:32:06,755 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,756 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,757 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:06,757 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,758 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,758 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,759 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,760 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,762 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,763 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:06,764 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,767 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,770 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,773 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,803 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 212 [2018-10-27 15:32:06,805 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 4 xjuncts. [2018-10-27 15:32:06,807 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:06,807 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:06,810 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,810 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,811 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:06,811 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,812 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,812 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,813 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,813 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,816 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,821 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:06,821 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,824 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,826 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,830 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 212 [2018-10-27 15:32:06,862 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 4 xjuncts. [2018-10-27 15:32:06,865 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:06,865 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:06,867 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:06,867 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:06,870 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,870 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,871 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:06,872 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,872 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,873 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,874 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,875 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,877 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,878 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:06,879 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,883 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,885 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,889 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,919 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 212 [2018-10-27 15:32:06,921 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 4 xjuncts. [2018-10-27 15:32:06,924 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,924 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,925 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:06,926 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,927 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,927 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,928 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,929 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,931 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,933 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:06,933 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,937 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,939 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,943 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:06,973 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 212 [2018-10-27 15:32:06,975 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 4 xjuncts. [2018-10-27 15:32:11,458 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,461 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,464 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,466 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:11,466 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,468 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,470 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,470 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,472 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,472 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,474 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,474 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,476 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,478 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,480 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,482 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:11,484 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,488 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,490 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,501 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:11,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 213 [2018-10-27 15:32:11,509 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:13,029 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,030 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,031 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:13,031 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,032 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,033 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,033 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,034 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,035 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:13,037 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:13,039 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,040 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,042 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 155 [2018-10-27 15:32:13,043 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:13,959 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,960 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,961 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:13,962 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,962 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,963 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,964 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,964 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,968 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:13,972 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,976 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:13,986 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 134 [2018-10-27 15:32:13,988 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:14,446 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,446 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,447 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,448 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:14,448 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,449 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,449 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,450 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,451 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,451 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,452 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,453 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,455 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:14,456 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,462 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,469 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,475 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,480 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 177 [2018-10-27 15:32:14,481 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:14,799 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,800 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,801 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,802 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:14,803 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,805 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,806 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,806 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,814 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,814 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,818 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,824 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,827 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,832 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,845 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:14,909 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 91 treesize of output 263 [2018-10-27 15:32:14,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-10-27 15:32:14,914 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 10 xjuncts. [2018-10-27 15:32:15,460 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,461 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,462 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,464 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:15,464 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,465 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,467 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,467 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,475 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,476 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,480 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,489 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,490 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,495 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,510 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:15,582 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 90 treesize of output 287 [2018-10-27 15:32:15,583 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-27 15:32:15,649 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 124 xjuncts. [2018-10-27 15:32:18,026 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,027 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,027 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,029 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:18,030 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,030 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,033 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,033 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,034 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,038 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,043 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,044 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,052 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,053 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,058 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,067 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:18,145 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 83 treesize of output 303 [2018-10-27 15:32:18,145 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-27 15:32:18,203 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 166 xjuncts. [2018-10-27 15:32:20,262 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,263 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,264 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,265 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:20,266 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,266 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,267 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,268 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,271 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,271 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,272 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,273 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:20,274 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,281 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,295 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:20,310 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 175 [2018-10-27 15:32:20,312 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:21,141 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:21,142 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:21,143 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:21,143 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:21,146 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:21,147 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:21,148 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:21,158 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:21,161 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:21,165 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:21,172 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:21,241 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 65 treesize of output 222 [2018-10-27 15:32:21,241 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-10-27 15:32:21,262 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 80 xjuncts. [2018-10-27 15:32:22,106 INFO L267 ElimStorePlain]: Start of recursive call 38: 20 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-10-27 15:32:22,341 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,342 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,343 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:22,346 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,346 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,347 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,380 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 96 treesize of output 175 [2018-10-27 15:32:22,597 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2018-10-27 15:32:22,602 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,603 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,603 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,605 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:22,606 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,606 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,607 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,610 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,610 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,611 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,618 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,632 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,643 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 169 [2018-10-27 15:32:22,644 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:22,646 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:22,647 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:22,650 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,650 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,651 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,652 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:22,652 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,653 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,653 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,656 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,657 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,658 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,664 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,680 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,691 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 169 [2018-10-27 15:32:22,693 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:22,700 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,700 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,701 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,702 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:22,702 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,703 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,703 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,706 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,707 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,707 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,714 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,728 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,739 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 169 [2018-10-27 15:32:22,741 INFO L267 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:22,744 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:22,744 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:22,749 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,749 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,749 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,751 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:22,751 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,752 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,752 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,755 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,756 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,756 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,762 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,771 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,782 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 169 [2018-10-27 15:32:22,783 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:22,785 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:22,785 INFO L267 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:22,930 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,930 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,931 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:22,932 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,932 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,933 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,938 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,941 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:22,950 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 96 [2018-10-27 15:32:22,951 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:22,994 INFO L267 ElimStorePlain]: Start of recursive call 55: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:32:23,264 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,265 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,265 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,266 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,266 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,267 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,269 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,270 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,271 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,303 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 220 [2018-10-27 15:32:23,560 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2018-10-27 15:32:23,563 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:23,563 INFO L267 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:23,566 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:23,566 INFO L267 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:23,569 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,569 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,570 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:23,571 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,572 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,572 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,573 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,574 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,575 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:23,576 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,578 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,580 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,587 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 149 [2018-10-27 15:32:23,588 INFO L267 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:23,591 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:23,591 INFO L267 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:23,594 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,594 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,595 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:23,596 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,597 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,597 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,598 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,599 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,600 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:23,601 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,603 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,605 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,612 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 149 [2018-10-27 15:32:23,613 INFO L267 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:23,616 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,617 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,618 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:23,619 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,619 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,620 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,620 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,621 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,622 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:23,623 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,625 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,627 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,635 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 149 [2018-10-27 15:32:23,636 INFO L267 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:23,642 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,643 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,644 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:23,645 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,645 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,646 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,647 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,647 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,649 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:23,649 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,651 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,653 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,661 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 149 [2018-10-27 15:32:23,662 INFO L267 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:23,824 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,825 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,825 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,826 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:23,827 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,828 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,828 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,829 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,830 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,831 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,831 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,834 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,835 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,835 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,836 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,843 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,851 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:23,872 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 199 [2018-10-27 15:32:23,873 INFO L267 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:23,944 INFO L267 ElimStorePlain]: Start of recursive call 64: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:32:24,015 INFO L267 ElimStorePlain]: Start of recursive call 37: 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-10-27 15:32:24,076 INFO L267 ElimStorePlain]: Start of recursive call 15: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-10-27 15:32:24,146 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 10 xjuncts. [2018-10-27 15:32:24,250 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 7 xjuncts. [2018-10-27 15:32:24,251 INFO L202 ElimStorePlain]: Needed 72 recursive calls to eliminate 6 variables, input treesize:150, output treesize:259 [2018-10-27 15:32:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:32:24,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:32:24,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 22] total 61 [2018-10-27 15:32:24,575 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:32:24,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-27 15:32:24,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-27 15:32:24,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=3324, Unknown=0, NotChecked=0, Total=3660 [2018-10-27 15:32:24,578 INFO L87 Difference]: Start difference. First operand 296 states and 359 transitions. Second operand 44 states. [2018-10-27 15:32:27,264 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2018-10-27 15:32:28,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:32:28,386 INFO L93 Difference]: Finished difference Result 337 states and 403 transitions. [2018-10-27 15:32:28,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-27 15:32:28,387 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 48 [2018-10-27 15:32:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:32:28,389 INFO L225 Difference]: With dead ends: 337 [2018-10-27 15:32:28,389 INFO L226 Difference]: Without dead ends: 318 [2018-10-27 15:32:28,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2002 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=755, Invalid=6385, Unknown=0, NotChecked=0, Total=7140 [2018-10-27 15:32:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-10-27 15:32:28,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 308. [2018-10-27 15:32:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-10-27 15:32:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 372 transitions. [2018-10-27 15:32:28,429 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 372 transitions. Word has length 48 [2018-10-27 15:32:28,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:32:28,429 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 372 transitions. [2018-10-27 15:32:28,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-27 15:32:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 372 transitions. [2018-10-27 15:32:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-27 15:32:28,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:32:28,430 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:32:28,431 INFO L424 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:32:28,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:32:28,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1928821950, now seen corresponding path program 5 times [2018-10-27 15:32:28,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:32:28,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:32:28,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:32:28,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:32:28,432 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:32:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:32:28,635 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-27 15:32:28,872 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 15:32:29,074 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-27 15:32:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:32:29,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:32:29,556 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:32:29,556 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:32:29,556 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:32:29,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:32:29,556 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:32:29,566 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 15:32:29,566 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-27 15:32:29,608 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-27 15:32:29,608 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 15:32:29,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:32:29,731 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 36 [2018-10-27 15:32:29,734 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:29,736 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 53 [2018-10-27 15:32:29,736 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:29,746 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:29,758 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:29,758 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:44 [2018-10-27 15:32:29,908 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:29,909 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2018-10-27 15:32:29,912 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:29,915 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:29,916 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 61 [2018-10-27 15:32:29,917 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:29,926 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:29,938 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:29,938 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:35 [2018-10-27 15:32:30,170 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 40 [2018-10-27 15:32:30,173 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:30,177 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:30,179 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:30,196 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 80 [2018-10-27 15:32:30,197 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:30,206 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:30,218 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:30,218 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:35 [2018-10-27 15:32:30,301 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 36 treesize of output 28 [2018-10-27 15:32:30,303 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:30,304 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:30,304 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:30,305 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:30,306 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:30,307 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 50 [2018-10-27 15:32:30,308 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:30,314 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:30,320 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:30,321 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:5 [2018-10-27 15:32:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-27 15:32:30,345 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:32:30,946 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 134 treesize of output 122 [2018-10-27 15:32:30,980 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,002 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 113 [2018-10-27 15:32:31,039 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,040 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,041 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,049 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,050 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,051 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 148 [2018-10-27 15:32:31,187 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2018-10-27 15:32:31,190 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,191 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,192 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,192 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,193 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,194 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,197 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,200 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,206 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 83 [2018-10-27 15:32:31,207 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:31,209 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,210 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,210 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,211 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,213 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,214 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,215 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,215 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,216 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,218 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,224 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 87 [2018-10-27 15:32:31,226 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:31,229 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,230 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,231 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,231 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,233 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,234 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,235 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,236 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,239 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,245 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 84 [2018-10-27 15:32:31,246 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:31,249 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,250 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,250 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,251 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,252 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,252 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,258 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,264 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 80 [2018-10-27 15:32:31,265 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:31,309 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:31,313 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,314 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,314 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,320 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,321 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,322 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 130 [2018-10-27 15:32:31,405 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,405 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,406 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,407 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,407 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,408 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,416 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:31,422 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 68 [2018-10-27 15:32:31,423 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:31,451 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:31,454 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:31,455 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:31,458 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:31,464 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:31,474 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:31,474 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 4 variables, input treesize:142, output treesize:16 [2018-10-27 15:32:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 39 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-27 15:32:31,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:32:31,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 16] total 46 [2018-10-27 15:32:31,544 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:32:31,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-27 15:32:31,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-27 15:32:31,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1840, Unknown=0, NotChecked=0, Total=2070 [2018-10-27 15:32:31,545 INFO L87 Difference]: Start difference. First operand 308 states and 372 transitions. Second operand 32 states. [2018-10-27 15:32:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:32:36,631 INFO L93 Difference]: Finished difference Result 578 states and 697 transitions. [2018-10-27 15:32:36,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-27 15:32:36,631 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 47 [2018-10-27 15:32:36,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:32:36,635 INFO L225 Difference]: With dead ends: 578 [2018-10-27 15:32:36,635 INFO L226 Difference]: Without dead ends: 478 [2018-10-27 15:32:36,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2267 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1140, Invalid=8172, Unknown=0, NotChecked=0, Total=9312 [2018-10-27 15:32:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2018-10-27 15:32:36,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 331. [2018-10-27 15:32:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-10-27 15:32:36,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 406 transitions. [2018-10-27 15:32:36,685 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 406 transitions. Word has length 47 [2018-10-27 15:32:36,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:32:36,685 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 406 transitions. [2018-10-27 15:32:36,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-27 15:32:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 406 transitions. [2018-10-27 15:32:36,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-27 15:32:36,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:32:36,686 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:32:36,686 INFO L424 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:32:36,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:32:36,687 INFO L82 PathProgramCache]: Analyzing trace with hash -820359102, now seen corresponding path program 6 times [2018-10-27 15:32:36,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:32:36,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:32:36,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 15:32:36,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:32:36,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:32:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:32:36,955 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-27 15:32:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:32:38,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:32:38,072 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:32:38,072 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:32:38,072 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:32:38,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:32:38,072 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:32:38,081 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-27 15:32:38,081 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-27 15:32:38,126 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-27 15:32:38,127 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 15:32:38,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:32:38,260 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 25 treesize of output 21 [2018-10-27 15:32:38,262 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-27 15:32:38,263 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:38,266 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:38,283 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-10-27 15:32:38,285 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 13 treesize of output 12 [2018-10-27 15:32:38,286 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:38,287 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:38,300 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:38,301 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:55, output treesize:29 [2018-10-27 15:32:38,489 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2018-10-27 15:32:38,493 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,495 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,495 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 0 case distinctions, treesize of input 26 treesize of output 54 [2018-10-27 15:32:38,496 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:38,506 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:38,523 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:38,523 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:48, output treesize:41 [2018-10-27 15:32:38,655 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 32 [2018-10-27 15:32:38,659 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,661 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,662 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,664 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,669 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 97 [2018-10-27 15:32:38,669 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:38,682 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:38,699 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:38,700 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:56, output treesize:41 [2018-10-27 15:32:38,824 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2018-10-27 15:32:38,828 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,830 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,831 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,833 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,836 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 85 [2018-10-27 15:32:38,837 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:38,851 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:38,870 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:38,870 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:57, output treesize:41 [2018-10-27 15:32:38,984 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2018-10-27 15:32:38,987 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,988 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,990 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,991 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:38,994 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 85 [2018-10-27 15:32:38,995 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:39,009 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:39,025 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:39,025 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:54, output treesize:38 [2018-10-27 15:32:39,116 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 36 treesize of output 28 [2018-10-27 15:32:39,118 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:39,119 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:39,119 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:39,121 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:39,122 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 42 [2018-10-27 15:32:39,122 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:39,128 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:39,135 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:39,136 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:5 [2018-10-27 15:32:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:32:39,192 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:32:40,072 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2018-10-27 15:32:40,075 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2018-10-27 15:32:40,095 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 77 [2018-10-27 15:32:40,103 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,124 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 85 [2018-10-27 15:32:40,131 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,131 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,133 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,134 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,150 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 94 [2018-10-27 15:32:40,258 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-27 15:32:40,263 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,264 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,264 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,266 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:40,268 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,285 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,323 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 132 [2018-10-27 15:32:40,326 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 14 xjuncts. [2018-10-27 15:32:40,330 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,330 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,331 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,335 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,336 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,342 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,353 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,407 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 177 [2018-10-27 15:32:40,407 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:32:40,418 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 42 xjuncts. [2018-10-27 15:32:40,421 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,422 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,422 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,426 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,427 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,433 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,445 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,499 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 177 [2018-10-27 15:32:40,500 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:32:40,510 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 42 xjuncts. [2018-10-27 15:32:40,513 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:40,513 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:40,517 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,517 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,517 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,520 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,521 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,527 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,538 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,593 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 179 [2018-10-27 15:32:40,594 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:32:40,603 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 40 xjuncts. [2018-10-27 15:32:40,607 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,607 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,613 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,653 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 125 [2018-10-27 15:32:40,655 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 16 xjuncts. [2018-10-27 15:32:40,659 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,659 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,660 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,663 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,663 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,685 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,696 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:40,749 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 179 [2018-10-27 15:32:40,750 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-27 15:32:40,759 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 42 xjuncts. [2018-10-27 15:32:42,609 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 13 xjuncts. [2018-10-27 15:32:42,803 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,803 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,804 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,811 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 89 [2018-10-27 15:32:42,911 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:42,911 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:42,929 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,930 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,930 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,931 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:42,931 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,932 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:42,940 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,941 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2018-10-27 15:32:42,942 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:42,945 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,946 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,947 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,948 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:42,949 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,951 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:42,959 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,959 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 62 [2018-10-27 15:32:42,960 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:42,967 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,968 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,968 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,970 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:42,970 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,972 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:42,980 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,981 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 60 [2018-10-27 15:32:42,981 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:42,985 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,985 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,986 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,988 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:42,988 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,990 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:42,998 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:42,999 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 62 [2018-10-27 15:32:42,999 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:43,003 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:43,003 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:43,006 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,007 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,008 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:43,017 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2018-10-27 15:32:43,018 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:43,086 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:32:43,248 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 13 xjuncts. [2018-10-27 15:32:43,409 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,412 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 73 [2018-10-27 15:32:43,416 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,417 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,417 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,424 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 75 [2018-10-27 15:32:43,521 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,521 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,524 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,539 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 65 [2018-10-27 15:32:43,540 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:43,543 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:43,543 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:43,546 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:43,547 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:43,551 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,551 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,552 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,554 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,555 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,557 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,564 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,584 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 107 [2018-10-27 15:32:43,586 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 4 xjuncts. [2018-10-27 15:32:43,590 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,590 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,590 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,592 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,593 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,595 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,601 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,622 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 105 [2018-10-27 15:32:43,623 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 4 xjuncts. [2018-10-27 15:32:43,627 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,627 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,628 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,629 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,630 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,632 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,639 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,660 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 107 [2018-10-27 15:32:43,662 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 4 xjuncts. [2018-10-27 15:32:43,666 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,666 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,667 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,669 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,670 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,672 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,679 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:43,700 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 105 [2018-10-27 15:32:43,702 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 4 xjuncts. [2018-10-27 15:32:43,844 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:32:43,871 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-27 15:32:44,014 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 11 xjuncts. [2018-10-27 15:32:44,108 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 10 xjuncts. [2018-10-27 15:32:44,201 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 10 xjuncts. [2018-10-27 15:32:44,325 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: and 10 xjuncts. [2018-10-27 15:32:44,325 INFO L202 ElimStorePlain]: Needed 30 recursive calls to eliminate 9 variables, input treesize:120, output treesize:206 [2018-10-27 15:32:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:32:44,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:32:44,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 22] total 56 [2018-10-27 15:32:44,615 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:32:44,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-27 15:32:44,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-27 15:32:44,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=2727, Unknown=0, NotChecked=0, Total=3080 [2018-10-27 15:32:44,616 INFO L87 Difference]: Start difference. First operand 331 states and 406 transitions. Second operand 37 states. [2018-10-27 15:32:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:32:47,976 INFO L93 Difference]: Finished difference Result 681 states and 845 transitions. [2018-10-27 15:32:47,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-27 15:32:47,976 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 47 [2018-10-27 15:32:47,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:32:47,980 INFO L225 Difference]: With dead ends: 681 [2018-10-27 15:32:47,980 INFO L226 Difference]: Without dead ends: 491 [2018-10-27 15:32:47,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=918, Invalid=6222, Unknown=0, NotChecked=0, Total=7140 [2018-10-27 15:32:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-10-27 15:32:48,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 367. [2018-10-27 15:32:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-10-27 15:32:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 451 transitions. [2018-10-27 15:32:48,034 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 451 transitions. Word has length 47 [2018-10-27 15:32:48,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:32:48,035 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 451 transitions. [2018-10-27 15:32:48,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-27 15:32:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 451 transitions. [2018-10-27 15:32:48,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-27 15:32:48,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:32:48,036 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:32:48,036 INFO L424 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:32:48,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:32:48,036 INFO L82 PathProgramCache]: Analyzing trace with hash -152780261, now seen corresponding path program 5 times [2018-10-27 15:32:48,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:32:48,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:32:48,037 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 15:32:48,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:32:48,037 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:32:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:32:48,579 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 12 [2018-10-27 15:32:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:32:49,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:32:49,225 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:32:49,225 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 15:32:49,225 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:32:49,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:32:49,225 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:32:49,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 15:32:49,234 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-27 15:32:49,295 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-27 15:32:49,295 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 15:32:49,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:32:49,349 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2018-10-27 15:32:49,352 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:49,354 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 29 [2018-10-27 15:32:49,355 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:49,360 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:49,374 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:49,375 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:45, output treesize:38 [2018-10-27 15:32:49,557 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2018-10-27 15:32:49,560 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:49,561 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:49,562 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:49,567 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 46 [2018-10-27 15:32:49,567 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:49,578 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:49,593 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:49,594 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:56, output treesize:38 [2018-10-27 15:32:49,774 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2018-10-27 15:32:49,778 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:49,779 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:49,781 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:49,786 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 46 [2018-10-27 15:32:49,787 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:49,798 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:49,816 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:49,817 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:62, output treesize:38 [2018-10-27 15:32:49,926 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2018-10-27 15:32:49,929 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:49,930 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:49,932 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:49,936 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 46 [2018-10-27 15:32:49,937 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:49,946 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:49,962 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:49,963 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:57, output treesize:38 [2018-10-27 15:32:50,063 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2018-10-27 15:32:50,067 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:50,068 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:50,069 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:50,073 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 61 [2018-10-27 15:32:50,073 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:50,085 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:50,099 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:32:50,099 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:54, output treesize:35 [2018-10-27 15:32:50,172 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 30 treesize of output 22 [2018-10-27 15:32:50,173 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:50,176 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 0 case distinctions, treesize of input 22 treesize of output 25 [2018-10-27 15:32:50,177 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:50,180 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:50,187 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:50,187 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:42, output treesize:3 [2018-10-27 15:32:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:32:50,214 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:32:51,546 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 75 treesize of output 69 [2018-10-27 15:32:51,549 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:51,552 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 76 [2018-10-27 15:32:51,567 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:51,602 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 99 [2018-10-27 15:32:51,607 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:51,638 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 74 treesize of output 109 [2018-10-27 15:32:51,641 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:51,642 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:51,708 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:51,777 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 65 treesize of output 100 [2018-10-27 15:32:52,074 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 90 [2018-10-27 15:32:52,078 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:52,078 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,080 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:52,080 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,083 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:52,083 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,085 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,085 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,086 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,086 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,087 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,087 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,089 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,095 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 85 [2018-10-27 15:32:52,096 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,100 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,101 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,101 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,102 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,103 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,103 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,106 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,112 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 85 [2018-10-27 15:32:52,113 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,116 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,117 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,118 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,118 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,119 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,120 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,122 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,128 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 85 [2018-10-27 15:32:52,129 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,133 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,134 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,134 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,135 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,135 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,136 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,138 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,144 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 85 [2018-10-27 15:32:52,145 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,299 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,300 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,300 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,301 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,301 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,302 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,302 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,309 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 74 [2018-10-27 15:32:52,310 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,364 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,364 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,366 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,366 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,367 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,368 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,371 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,372 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,420 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 119 [2018-10-27 15:32:52,422 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 8 xjuncts. [2018-10-27 15:32:52,489 INFO L267 ElimStorePlain]: Start of recursive call 7: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,544 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,578 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 66 treesize of output 97 [2018-10-27 15:32:52,902 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 92 [2018-10-27 15:32:52,905 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,906 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,906 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,907 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,907 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,908 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,910 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,916 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 81 [2018-10-27 15:32:52,917 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,920 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:52,921 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,922 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:52,923 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,925 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:52,925 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,929 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,929 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,930 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,930 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,930 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,931 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,933 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,939 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 81 [2018-10-27 15:32:52,940 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,944 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,945 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,946 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,947 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,947 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,948 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,950 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,956 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 81 [2018-10-27 15:32:52,957 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:52,961 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,962 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,963 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,963 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,964 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,965 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,967 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:52,973 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 81 [2018-10-27 15:32:52,973 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:53,122 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,123 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,124 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,124 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,125 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,129 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,130 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,130 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,132 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,157 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 2 case distinctions, treesize of input 56 treesize of output 110 [2018-10-27 15:32:53,158 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 4 xjuncts. [2018-10-27 15:32:53,256 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,257 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,257 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,257 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,258 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,260 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,273 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 70 [2018-10-27 15:32:53,274 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:53,307 INFO L267 ElimStorePlain]: Start of recursive call 17: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:32:53,348 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:53,410 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 67 treesize of output 132 [2018-10-27 15:32:56,541 WARN L179 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 758 DAG size of output: 478 [2018-10-27 15:32:56,547 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,548 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,548 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,549 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,550 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,552 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,553 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,553 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,557 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,568 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:56,576 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 1 case distinctions, treesize of input 73 treesize of output 102 [2018-10-27 15:32:56,577 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:56,587 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,588 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,588 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,589 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,589 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,590 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,591 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,591 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,595 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,606 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:56,614 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 1 case distinctions, treesize of input 75 treesize of output 102 [2018-10-27 15:32:56,615 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:56,618 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,619 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,619 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,620 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,621 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,623 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,623 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,624 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,628 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,639 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:56,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 102 [2018-10-27 15:32:56,647 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:56,651 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:56,651 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:56,654 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:56,654 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:56,656 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-27 15:32:56,656 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-10-27 15:32:56,660 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,660 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,661 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,661 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,662 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,664 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,665 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,666 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,669 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:56,680 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:56,688 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 1 case distinctions, treesize of input 69 treesize of output 102 [2018-10-27 15:32:56,689 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 2 xjuncts. [2018-10-27 15:32:59,590 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:59,590 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:59,591 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:59,591 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:59,592 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:59,593 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:59,593 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:59,594 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:59,598 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:32:59,608 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 15:32:59,609 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 87 [2018-10-27 15:32:59,610 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-10-27 15:33:00,212 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,213 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,214 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,214 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,215 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,216 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,217 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,217 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,219 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,231 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 85 [2018-10-27 15:33:00,232 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2018-10-27 15:33:00,798 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,798 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,799 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,800 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,800 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,801 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,802 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,802 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,806 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:00,833 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 103 [2018-10-27 15:33:00,835 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 4 xjuncts. [2018-10-27 15:33:01,414 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,415 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,416 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,417 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,417 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,418 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,419 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,426 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 70 [2018-10-27 15:33:01,427 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2018-10-27 15:33:01,928 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,929 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,933 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,936 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,936 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,939 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,939 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:33:01,980 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 135 [2018-10-27 15:33:01,984 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 12 xjuncts. Received shutdown request... [2018-10-27 15:33:02,253 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 15:33:02,453 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:33:02,454 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 15:33:02,460 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 15:33:02,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:33:02 BoogieIcfgContainer [2018-10-27 15:33:02,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 15:33:02,461 INFO L168 Benchmark]: Toolchain (without parser) took 254957.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.6 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -507.5 MB). Peak memory consumption was 643.1 MB. Max. memory is 7.1 GB. [2018-10-27 15:33:02,462 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 15:33:02,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.04 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. [2018-10-27 15:33:02,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.62 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. [2018-10-27 15:33:02,462 INFO L168 Benchmark]: Boogie Preprocessor took 53.23 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. [2018-10-27 15:33:02,462 INFO L168 Benchmark]: RCFGBuilder took 557.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2018-10-27 15:33:02,463 INFO L168 Benchmark]: TraceAbstraction took 253983.71 ms. Allocated memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.2 MB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 282.8 MB). Peak memory consumption was 680.0 MB. Max. memory is 7.1 GB. [2018-10-27 15:33:02,464 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.04 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 55.62 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 53.23 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 557.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253983.71 ms. Allocated memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.2 MB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 282.8 MB). Peak memory consumption was 680.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 5]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 5). Cancelled while BasicCegarLoop was analyzing trace of length 52 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 262. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. TIMEOUT Result, 253.9s OverallTime, 22 OverallIterations, 5 TraceHistogramMax, 90.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 806 SDtfs, 2522 SDslu, 7721 SDs, 0 SdLazy, 10290 SolverSat, 1646 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 66.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2156 GetRequests, 1029 SyntacticMatches, 118 SemanticMatches, 1009 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 18178 ImplicationChecksByTransitivity, 102.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.1s AbstIntTime, 6 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 21 MinimizatonAttempts, 1136 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 143.7s InterpolantComputationTime, 1494 NumberOfCodeBlocks, 1482 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 2158 ConstructedInterpolants, 348 QuantifiedInterpolants, 1480371 SizeOfPredicates, 592 NumberOfNonLiveVariables, 3578 ConjunctsInSsa, 1011 ConjunctsInUnsatCore, 57 InterpolantComputations, 3 PerfectInterpolantSequences, 237/1634 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown