java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/loops/insertion_sort_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 20:28:32,645 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 20:28:32,650 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 20:28:32,667 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 20:28:32,667 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 20:28:32,668 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 20:28:32,670 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 20:28:32,671 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 20:28:32,673 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 20:28:32,674 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 20:28:32,675 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 20:28:32,675 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 20:28:32,676 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 20:28:32,677 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 20:28:32,678 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 20:28:32,679 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 20:28:32,680 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 20:28:32,682 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 20:28:32,684 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 20:28:32,685 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 20:28:32,687 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 20:28:32,688 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 20:28:32,690 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 20:28:32,691 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 20:28:32,691 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 20:28:32,692 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 20:28:32,693 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 20:28:32,694 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 20:28:32,695 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 20:28:32,696 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 20:28:32,697 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 20:28:32,697 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 20:28:32,700 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 20:28:32,718 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 20:28:32,718 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 20:28:32,719 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 20:28:32,719 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 20:28:32,719 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 20:28:32,720 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 20:28:32,720 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 20:28:32,720 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 20:28:32,720 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 20:28:32,720 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 20:28:32,721 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 20:28:32,721 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 20:28:32,721 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 20:28:32,722 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 20:28:32,722 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 20:28:32,722 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 20:28:32,722 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 20:28:32,723 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 20:28:32,723 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 20:28:32,723 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 20:28:32,723 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 20:28:32,724 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 20:28:32,724 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 20:28:32,724 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 20:28:32,724 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 20:28:32,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 20:28:32,725 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 20:28:32,725 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 20:28:32,725 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 20:28:32,725 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 20:28:32,726 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 20:28:32,726 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 20:28:32,726 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 20:28:32,726 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 20:28:32,726 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 20:28:32,769 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 20:28:32,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 20:28:32,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 20:28:32,788 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 20:28:32,789 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 20:28:32,789 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/insertion_sort_true-unreach-call_true-termination.i [2018-11-12 20:28:32,856 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2395d6da3/ab32fa28769f48afb4df2b82e09b3d7a/FLAG769b7c573 [2018-11-12 20:28:33,361 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 20:28:33,362 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort_true-unreach-call_true-termination.i [2018-11-12 20:28:33,368 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2395d6da3/ab32fa28769f48afb4df2b82e09b3d7a/FLAG769b7c573 [2018-11-12 20:28:33,382 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2395d6da3/ab32fa28769f48afb4df2b82e09b3d7a [2018-11-12 20:28:33,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 20:28:33,394 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 20:28:33,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 20:28:33,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 20:28:33,399 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 20:28:33,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:28:33" (1/1) ... [2018-11-12 20:28:33,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9ae0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33, skipping insertion in model container [2018-11-12 20:28:33,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:28:33" (1/1) ... [2018-11-12 20:28:33,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 20:28:33,436 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 20:28:33,648 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:28:33,652 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 20:28:33,687 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:28:33,714 INFO L193 MainTranslator]: Completed translation [2018-11-12 20:28:33,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33 WrapperNode [2018-11-12 20:28:33,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 20:28:33,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 20:28:33,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 20:28:33,717 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 20:28:33,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33" (1/1) ... [2018-11-12 20:28:33,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33" (1/1) ... [2018-11-12 20:28:33,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 20:28:33,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 20:28:33,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 20:28:33,748 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 20:28:33,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33" (1/1) ... [2018-11-12 20:28:33,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33" (1/1) ... [2018-11-12 20:28:33,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33" (1/1) ... [2018-11-12 20:28:33,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33" (1/1) ... [2018-11-12 20:28:33,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33" (1/1) ... [2018-11-12 20:28:33,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33" (1/1) ... [2018-11-12 20:28:33,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33" (1/1) ... [2018-11-12 20:28:33,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 20:28:33,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 20:28:33,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 20:28:33,782 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 20:28:33,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 20:28:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-12 20:28:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 20:28:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 20:28:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-12 20:28:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 20:28:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 20:28:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 20:28:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 20:28:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-12 20:28:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-12 20:28:33,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-12 20:28:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-12 20:28:34,436 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 20:28:34,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:28:34 BoogieIcfgContainer [2018-11-12 20:28:34,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 20:28:34,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 20:28:34,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 20:28:34,442 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 20:28:34,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:28:33" (1/3) ... [2018-11-12 20:28:34,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fae465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:28:34, skipping insertion in model container [2018-11-12 20:28:34,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:33" (2/3) ... [2018-11-12 20:28:34,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fae465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:28:34, skipping insertion in model container [2018-11-12 20:28:34,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:28:34" (3/3) ... [2018-11-12 20:28:34,446 INFO L112 eAbstractionObserver]: Analyzing ICFG insertion_sort_true-unreach-call_true-termination.i [2018-11-12 20:28:34,456 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 20:28:34,467 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 20:28:34,484 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 20:28:34,517 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 20:28:34,517 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 20:28:34,518 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 20:28:34,518 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 20:28:34,518 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 20:28:34,518 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 20:28:34,518 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 20:28:34,519 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 20:28:34,538 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-12 20:28:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-12 20:28:34,545 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:28:34,548 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:28:34,550 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:28:34,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:28:34,557 INFO L82 PathProgramCache]: Analyzing trace with hash 277130583, now seen corresponding path program 1 times [2018-11-12 20:28:34,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:28:34,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:34,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:28:34,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:34,612 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:28:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:28:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:34,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:28:34,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-12 20:28:34,706 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:28:34,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-12 20:28:34,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-12 20:28:34,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-12 20:28:34,728 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-12 20:28:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:28:34,753 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2018-11-12 20:28:34,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-12 20:28:34,755 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-11-12 20:28:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:28:34,764 INFO L225 Difference]: With dead ends: 56 [2018-11-12 20:28:34,764 INFO L226 Difference]: Without dead ends: 26 [2018-11-12 20:28:34,768 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-12 20:28:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-12 20:28:34,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-12 20:28:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-12 20:28:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-11-12 20:28:34,805 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2018-11-12 20:28:34,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:28:34,805 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-11-12 20:28:34,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-12 20:28:34,806 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-12 20:28:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-12 20:28:34,807 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:28:34,807 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:28:34,808 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:28:34,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:28:34,808 INFO L82 PathProgramCache]: Analyzing trace with hash -32556863, now seen corresponding path program 1 times [2018-11-12 20:28:34,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:28:34,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:34,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:28:34,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:34,811 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:28:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:28:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:35,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:28:35,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 20:28:35,034 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:28:35,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 20:28:35,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 20:28:35,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-12 20:28:35,036 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2018-11-12 20:28:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:28:35,167 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2018-11-12 20:28:35,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-12 20:28:35,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-12 20:28:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:28:35,170 INFO L225 Difference]: With dead ends: 48 [2018-11-12 20:28:35,170 INFO L226 Difference]: Without dead ends: 34 [2018-11-12 20:28:35,171 INFO L604 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 [2018-11-12 20:28:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-12 20:28:35,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2018-11-12 20:28:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-12 20:28:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-11-12 20:28:35,178 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 15 [2018-11-12 20:28:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:28:35,178 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-11-12 20:28:35,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 20:28:35,179 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-11-12 20:28:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-12 20:28:35,180 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:28:35,180 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] [2018-11-12 20:28:35,180 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:28:35,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:28:35,180 INFO L82 PathProgramCache]: Analyzing trace with hash 894306866, now seen corresponding path program 1 times [2018-11-12 20:28:35,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:28:35,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:35,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:28:35,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:35,182 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:28:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:28:35,900 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 23 [2018-11-12 20:28:36,240 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-11-12 20:28:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:36,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:28:36,418 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:28:36,419 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-11-12 20:28:36,422 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] [2018-11-12 20:28:36,471 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:28:36,472 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:28:36,597 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 20:28:36,929 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:28:36,931 INFO L272 AbstractInterpreter]: Visited 22 different actions 112 times. Merged at 12 different actions 69 times. Widened at 3 different actions 5 times. Performed 658 root evaluator evaluations with a maximum evaluation depth of 3. Performed 658 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 20:28:36,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:28:36,967 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:28:36,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:28:36,967 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:28:36,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:28:36,979 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:28:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:28:37,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:28:37,359 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 [2018-11-12 20:28:37,369 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:37,403 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 [2018-11-12 20:28:37,404 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:37,492 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:37,606 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. [2018-11-12 20:28:37,607 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:30 [2018-11-12 20:28:37,729 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 [2018-11-12 20:28:37,746 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-11-12 20:28:37,747 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:37,752 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:37,754 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:37,755 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-11-12 20:28:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:37,776 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:28:38,051 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 [2018-11-12 20:28:38,147 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:38,149 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 [2018-11-12 20:28:38,151 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:38,161 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:38,163 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:38,166 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:38,188 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 [2018-11-12 20:28:38,191 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-12 20:28:38,206 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:38,208 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:38,210 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:38,220 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 [2018-11-12 20:28:38,223 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-12 20:28:38,270 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:28:38,277 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:38,278 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:45, output treesize:10 [2018-11-12 20:28:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:38,462 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:28:38,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2018-11-12 20:28:38,462 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:28:38,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 20:28:38,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 20:28:38,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2018-11-12 20:28:38,465 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 17 states. [2018-11-12 20:28:39,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:28:39,387 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2018-11-12 20:28:39,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 20:28:39,391 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2018-11-12 20:28:39,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:28:39,395 INFO L225 Difference]: With dead ends: 92 [2018-11-12 20:28:39,396 INFO L226 Difference]: Without dead ends: 72 [2018-11-12 20:28:39,397 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2018-11-12 20:28:39,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-12 20:28:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 48. [2018-11-12 20:28:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-12 20:28:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-11-12 20:28:39,413 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 23 [2018-11-12 20:28:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:28:39,413 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-11-12 20:28:39,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 20:28:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-11-12 20:28:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-12 20:28:39,415 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:28:39,415 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] [2018-11-12 20:28:39,415 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:28:39,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:28:39,416 INFO L82 PathProgramCache]: Analyzing trace with hash 692568650, now seen corresponding path program 1 times [2018-11-12 20:28:39,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:28:39,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:39,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:28:39,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:39,418 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:28:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:28:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:39,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:28:39,958 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:28:39,958 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-11-12 20:28:39,958 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] [2018-11-12 20:28:39,961 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:28:39,961 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:28:39,972 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 20:28:40,174 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:28:40,175 INFO L272 AbstractInterpreter]: Visited 24 different actions 142 times. Merged at 14 different actions 81 times. Widened at 4 different actions 7 times. Performed 771 root evaluator evaluations with a maximum evaluation depth of 3. Performed 771 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 19 fixpoints after 6 different actions. Largest state had 25 variables. [2018-11-12 20:28:40,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:28:40,193 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:28:40,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:28:40,193 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:28:40,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:28:40,205 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:28:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:28:40,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:28:40,490 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 38 treesize of output 31 [2018-11-12 20:28:40,494 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:40,495 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 47 [2018-11-12 20:28:40,496 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:40,505 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:40,518 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-12 20:28:40,518 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:49, output treesize:45 [2018-11-12 20:28:40,947 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:40,948 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 50 treesize of output 52 [2018-11-12 20:28:40,958 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:40,959 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:40,961 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:40,962 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 72 [2018-11-12 20:28:40,964 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:40,979 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:40,994 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. [2018-11-12 20:28:40,995 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:64, output treesize:29 [2018-11-12 20:28:41,135 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2018-11-12 20:28:41,139 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,140 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:41,141 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:41,142 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,143 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:41,144 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 49 [2018-11-12 20:28:41,146 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:41,154 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:41,170 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:41,170 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:45, output treesize:5 [2018-11-12 20:28:41,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:41,196 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:28:41,605 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 77 treesize of output 67 [2018-11-12 20:28:41,617 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,618 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 67 treesize of output 68 [2018-11-12 20:28:41,875 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2018-11-12 20:28:41,904 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,909 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,916 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,917 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,918 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 57 [2018-11-12 20:28:41,919 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:41,936 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,936 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,937 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,938 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,938 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,939 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,955 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 86 [2018-11-12 20:28:41,958 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-12 20:28:41,969 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,971 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,971 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,975 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,975 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,977 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,978 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:41,989 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 87 [2018-11-12 20:28:41,993 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-11-12 20:28:41,996 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:28:41,997 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:42,022 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,035 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,051 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,076 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,085 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,093 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,095 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,099 INFO L303 Elim1Store]: Index analysis took 101 ms [2018-11-12 20:28:42,146 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 87 [2018-11-12 20:28:42,150 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-11-12 20:28:42,170 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:28:42,170 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:42,197 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,211 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,220 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,259 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,268 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,281 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:28:42,366 INFO L303 Elim1Store]: Index analysis took 194 ms [2018-11-12 20:28:42,399 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 86 [2018-11-12 20:28:42,402 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-12 20:28:42,442 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:42,445 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:42,454 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. [2018-11-12 20:28:42,457 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 5 variables, input treesize:87, output treesize:16 [2018-11-12 20:28:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:42,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:28:42,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2018-11-12 20:28:42,592 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:28:42,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 20:28:42,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 20:28:42,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 20:28:42,594 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 23 states. [2018-11-12 20:28:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:28:43,512 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2018-11-12 20:28:43,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-12 20:28:43,512 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27 [2018-11-12 20:28:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:28:43,516 INFO L225 Difference]: With dead ends: 114 [2018-11-12 20:28:43,516 INFO L226 Difference]: Without dead ends: 77 [2018-11-12 20:28:43,518 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=228, Invalid=1412, Unknown=0, NotChecked=0, Total=1640 [2018-11-12 20:28:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-12 20:28:43,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 48. [2018-11-12 20:28:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-12 20:28:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2018-11-12 20:28:43,527 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 27 [2018-11-12 20:28:43,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:28:43,528 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2018-11-12 20:28:43,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 20:28:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2018-11-12 20:28:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-12 20:28:43,529 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:28:43,530 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] [2018-11-12 20:28:43,530 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:28:43,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:28:43,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1150796076, now seen corresponding path program 1 times [2018-11-12 20:28:43,530 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:28:43,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:43,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:28:43,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:43,532 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:28:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:28:43,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:43,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:28:43,689 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:28:43,689 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-11-12 20:28:43,689 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] [2018-11-12 20:28:43,692 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:28:43,692 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:28:43,701 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 20:28:43,934 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:28:43,934 INFO L272 AbstractInterpreter]: Visited 27 different actions 175 times. Merged at 15 different actions 94 times. Widened at 4 different actions 8 times. Performed 802 root evaluator evaluations with a maximum evaluation depth of 5. Performed 802 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 8 fixpoints after 3 different actions. Largest state had 25 variables. [2018-11-12 20:28:43,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:28:43,973 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:28:43,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:28:43,973 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:28:43,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:28:43,989 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:28:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:28:44,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:28:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:44,189 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:28:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:44,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:28:44,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2018-11-12 20:28:44,393 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:28:44,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 20:28:44,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 20:28:44,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-12 20:28:44,394 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 8 states. [2018-11-12 20:28:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:28:44,524 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2018-11-12 20:28:44,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 20:28:44,525 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-12 20:28:44,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:28:44,527 INFO L225 Difference]: With dead ends: 69 [2018-11-12 20:28:44,527 INFO L226 Difference]: Without dead ends: 46 [2018-11-12 20:28:44,528 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-11-12 20:28:44,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-12 20:28:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2018-11-12 20:28:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-12 20:28:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-11-12 20:28:44,534 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2018-11-12 20:28:44,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:28:44,534 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-11-12 20:28:44,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 20:28:44,534 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-11-12 20:28:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-12 20:28:44,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:28:44,536 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] [2018-11-12 20:28:44,536 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:28:44,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:28:44,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1621042525, now seen corresponding path program 2 times [2018-11-12 20:28:44,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:28:44,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:44,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:28:44,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:28:44,537 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:28:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:28:44,989 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 20 [2018-11-12 20:28:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:45,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:28:45,215 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:28:45,215 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:28:45,215 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:28:45,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:28:45,216 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:28:45,225 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-12 20:28:45,225 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-12 20:28:45,279 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-12 20:28:45,280 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:28:45,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:28:45,523 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 [2018-11-12 20:28:45,527 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:45,530 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 [2018-11-12 20:28:45,530 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:45,537 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:45,549 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:45,550 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:30 [2018-11-12 20:28:45,737 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 32 treesize of output 25 [2018-11-12 20:28:45,741 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:45,743 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:45,744 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:28:45,751 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 25 treesize of output 58 [2018-11-12 20:28:45,752 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:45,861 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:45,874 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. [2018-11-12 20:28:45,874 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:25 [2018-11-12 20:28:45,907 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 [2018-11-12 20:28:45,953 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 [2018-11-12 20:28:45,954 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:28:45,960 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:45,961 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:28:45,961 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-11-12 20:28:45,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:28:45,975 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:28:56,753 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-12 20:28:58,813 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-12 20:29:00,882 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 20:29:00,987 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 53 [2018-11-12 20:29:00,989 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:00,991 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 60 [2018-11-12 20:29:01,064 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,066 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,067 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,068 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,068 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,086 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 [2018-11-12 20:29:01,091 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2018-11-12 20:29:01,098 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,100 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,100 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,102 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,103 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,120 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 83 [2018-11-12 20:29:01,124 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-11-12 20:29:01,127 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,129 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,130 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,131 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,132 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,151 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 44 treesize of output 85 [2018-11-12 20:29:01,154 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-11-12 20:29:01,155 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:29:01,156 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:01,160 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,175 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 [2018-11-12 20:29:01,177 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-11-12 20:29:01,180 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,193 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,194 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,195 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,196 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:01,215 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 85 [2018-11-12 20:29:01,219 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-11-12 20:29:01,223 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:29:01,223 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:01,301 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:29:01,318 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:29:01,342 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:29:01,343 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 4 variables, input treesize:64, output treesize:58 [2018-11-12 20:29:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:01,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:29:01,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 17] total 33 [2018-11-12 20:29:01,489 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:29:01,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 20:29:01,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 20:29:01,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=914, Unknown=4, NotChecked=0, Total=1056 [2018-11-12 20:29:01,491 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 19 states. [2018-11-12 20:29:02,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:29:02,391 INFO L93 Difference]: Finished difference Result 116 states and 137 transitions. [2018-11-12 20:29:02,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 20:29:02,391 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 31 [2018-11-12 20:29:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:29:02,392 INFO L225 Difference]: With dead ends: 116 [2018-11-12 20:29:02,393 INFO L226 Difference]: Without dead ends: 96 [2018-11-12 20:29:02,394 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 37 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=296, Invalid=1592, Unknown=4, NotChecked=0, Total=1892 [2018-11-12 20:29:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-11-12 20:29:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2018-11-12 20:29:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-12 20:29:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2018-11-12 20:29:02,403 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 31 [2018-11-12 20:29:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:29:02,403 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2018-11-12 20:29:02,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 20:29:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2018-11-12 20:29:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-12 20:29:02,404 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:29:02,405 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] [2018-11-12 20:29:02,405 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:29:02,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:29:02,405 INFO L82 PathProgramCache]: Analyzing trace with hash -693836487, now seen corresponding path program 1 times [2018-11-12 20:29:02,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:29:02,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:29:02,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:29:02,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:29:02,406 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:29:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:29:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:02,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:29:02,920 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:29:02,920 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-11-12 20:29:02,920 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] [2018-11-12 20:29:02,922 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:29:02,922 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:29:02,928 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 20:29:03,062 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:29:03,062 INFO L272 AbstractInterpreter]: Visited 23 different actions 146 times. Merged at 13 different actions 90 times. Widened at 4 different actions 7 times. Performed 943 root evaluator evaluations with a maximum evaluation depth of 3. Performed 943 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 11 fixpoints after 5 different actions. Largest state had 25 variables. [2018-11-12 20:29:03,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:29:03,101 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:29:03,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:29:03,101 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:29:03,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:29:03,113 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:29:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:29:03,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:29:03,414 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 21 treesize of output 16 [2018-11-12 20:29:03,452 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:03,453 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-11-12 20:29:03,454 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:03,462 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:03,468 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:03,469 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:17 [2018-11-12 20:29:03,488 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 [2018-11-12 20:29:03,491 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 [2018-11-12 20:29:03,492 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:03,493 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:03,495 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:03,495 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-11-12 20:29:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:03,510 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:29:03,751 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 [2018-11-12 20:29:03,798 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:03,799 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 [2018-11-12 20:29:03,800 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:03,802 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:03,803 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:03,804 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:03,811 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 [2018-11-12 20:29:03,813 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:03,848 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:03,879 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:03,888 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:03,934 INFO L303 Elim1Store]: Index analysis took 120 ms [2018-11-12 20:29:03,963 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 [2018-11-12 20:29:03,965 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:03,997 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:29:04,003 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:04,004 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:45, output treesize:10 [2018-11-12 20:29:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:04,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:29:04,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2018-11-12 20:29:04,179 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:29:04,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 20:29:04,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 20:29:04,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2018-11-12 20:29:04,180 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 17 states. [2018-11-12 20:29:05,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:29:05,754 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2018-11-12 20:29:05,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-12 20:29:05,754 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2018-11-12 20:29:05,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:29:05,757 INFO L225 Difference]: With dead ends: 182 [2018-11-12 20:29:05,757 INFO L226 Difference]: Without dead ends: 162 [2018-11-12 20:29:05,758 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=579, Invalid=2961, Unknown=0, NotChecked=0, Total=3540 [2018-11-12 20:29:05,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-11-12 20:29:05,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 77. [2018-11-12 20:29:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-12 20:29:05,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2018-11-12 20:29:05,772 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 35 [2018-11-12 20:29:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:29:05,773 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2018-11-12 20:29:05,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 20:29:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2018-11-12 20:29:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-12 20:29:05,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:29:05,775 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] [2018-11-12 20:29:05,775 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:29:05,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:29:05,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1280642501, now seen corresponding path program 2 times [2018-11-12 20:29:05,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:29:05,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:29:05,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:29:05,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:29:05,777 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:29:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:29:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:05,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:29:05,933 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:29:05,933 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:29:05,933 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:29:05,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:29:05,934 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:29:05,943 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-12 20:29:05,943 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-12 20:29:05,964 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-12 20:29:05,964 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:29:05,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:29:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:05,973 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:29:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:06,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:29:06,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2018-11-12 20:29:06,027 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:29:06,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 20:29:06,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 20:29:06,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-12 20:29:06,029 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand 7 states. [2018-11-12 20:29:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:29:06,204 INFO L93 Difference]: Finished difference Result 159 states and 192 transitions. [2018-11-12 20:29:06,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 20:29:06,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2018-11-12 20:29:06,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:29:06,206 INFO L225 Difference]: With dead ends: 159 [2018-11-12 20:29:06,206 INFO L226 Difference]: Without dead ends: 121 [2018-11-12 20:29:06,207 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2018-11-12 20:29:06,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-11-12 20:29:06,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 87. [2018-11-12 20:29:06,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-12 20:29:06,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2018-11-12 20:29:06,219 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 35 [2018-11-12 20:29:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:29:06,226 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2018-11-12 20:29:06,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 20:29:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2018-11-12 20:29:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-12 20:29:06,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:29:06,228 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] [2018-11-12 20:29:06,228 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:29:06,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:29:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1601373509, now seen corresponding path program 3 times [2018-11-12 20:29:06,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:29:06,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:29:06,229 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:29:06,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:29:06,230 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:29:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:29:06,659 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-11-12 20:29:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:06,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:29:06,841 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:29:06,841 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:29:06,842 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:29:06,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:29:06,842 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:29:06,850 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-12 20:29:06,850 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-12 20:29:06,869 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-12 20:29:06,869 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:29:06,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:29:06,981 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 40 treesize of output 33 [2018-11-12 20:29:06,988 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:06,989 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 33 treesize of output 50 [2018-11-12 20:29:06,989 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:06,998 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:07,009 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:07,010 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:54, output treesize:50 [2018-11-12 20:29:07,131 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:07,131 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 [2018-11-12 20:29:07,135 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:07,136 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 48 [2018-11-12 20:29:07,137 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:07,145 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:07,160 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. [2018-11-12 20:29:07,161 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:69, output treesize:41 [2018-11-12 20:29:07,229 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 [2018-11-12 20:29:07,232 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:07,234 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:07,235 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:07,236 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:07,239 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 27 treesize of output 76 [2018-11-12 20:29:07,240 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:07,251 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:07,262 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. [2018-11-12 20:29:07,263 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:27 [2018-11-12 20:29:07,342 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 [2018-11-12 20:29:07,345 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:07,345 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 [2018-11-12 20:29:07,346 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:07,347 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:07,348 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:07,348 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:5 [2018-11-12 20:29:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:07,366 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:29:19,673 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-12 20:29:28,555 WARN L832 $PredicateComparison]: unable to prove that (forall ((main_~key~0 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_main_~#v~0.base|) (+ (* 4 c_main_~j~0) |c_main_~#v~0.offset| 4) main_~key~0))) (< (select .cse0 |c_main_~#v~0.offset|) (+ (select .cse0 (+ |c_main_~#v~0.offset| 4)) 1)))) is different from false [2018-11-12 20:29:36,823 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 24 [2018-11-12 20:29:38,889 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-12 20:29:38,969 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 91 treesize of output 81 [2018-11-12 20:29:38,990 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:38,991 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 81 treesize of output 82 [2018-11-12 20:29:38,993 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:38,994 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:38,994 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 76 [2018-11-12 20:29:39,075 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,076 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,077 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,078 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,078 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,079 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,088 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,094 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 45 treesize of output 84 [2018-11-12 20:29:39,096 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:39,099 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,100 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,102 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,108 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 40 treesize of output 58 [2018-11-12 20:29:39,109 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:39,112 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,113 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,114 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,116 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,117 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,117 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,127 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,133 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 48 treesize of output 83 [2018-11-12 20:29:39,135 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:39,139 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,142 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,154 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 43 treesize of output 64 [2018-11-12 20:29:39,156 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 3 xjuncts. [2018-11-12 20:29:39,167 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,168 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,168 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,170 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,170 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,170 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,179 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,185 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 46 treesize of output 85 [2018-11-12 20:29:39,187 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:39,190 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,190 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,191 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,193 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,193 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,194 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,203 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,209 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 50 treesize of output 83 [2018-11-12 20:29:39,211 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:39,239 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,253 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,262 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,268 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,268 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,269 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,273 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:39,279 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 48 treesize of output 85 [2018-11-12 20:29:39,281 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:39,334 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:29:39,351 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:29:39,363 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:29:39,380 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:29:39,381 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 4 variables, input treesize:96, output treesize:43 [2018-11-12 20:29:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-11-12 20:29:41,551 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:29:41,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 35 [2018-11-12 20:29:41,552 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:29:41,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 20:29:41,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 20:29:41,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=972, Unknown=11, NotChecked=64, Total=1190 [2018-11-12 20:29:41,553 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand 21 states. [2018-11-12 20:29:42,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:29:42,621 INFO L93 Difference]: Finished difference Result 137 states and 158 transitions. [2018-11-12 20:29:42,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 20:29:42,622 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2018-11-12 20:29:42,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:29:42,624 INFO L225 Difference]: With dead ends: 137 [2018-11-12 20:29:42,624 INFO L226 Difference]: Without dead ends: 135 [2018-11-12 20:29:42,625 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=310, Invalid=1663, Unknown=11, NotChecked=86, Total=2070 [2018-11-12 20:29:42,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-11-12 20:29:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 79. [2018-11-12 20:29:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-12 20:29:42,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2018-11-12 20:29:42,636 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 35 [2018-11-12 20:29:42,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:29:42,636 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2018-11-12 20:29:42,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 20:29:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2018-11-12 20:29:42,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-12 20:29:42,638 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:29:42,638 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] [2018-11-12 20:29:42,638 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:29:42,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:29:42,639 INFO L82 PathProgramCache]: Analyzing trace with hash 99245443, now seen corresponding path program 2 times [2018-11-12 20:29:42,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:29:42,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:29:42,640 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:29:42,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:29:42,640 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:29:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:29:42,980 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 8 [2018-11-12 20:29:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:43,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:29:43,437 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:29:43,437 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:29:43,438 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:29:43,438 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:29:43,438 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 20:29:43,449 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-12 20:29:43,449 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-12 20:29:43,473 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-12 20:29:43,473 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:29:43,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:29:44,124 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 [2018-11-12 20:29:44,127 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:44,129 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 [2018-11-12 20:29:44,129 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:44,141 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:44,150 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:44,151 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:27 [2018-11-12 20:29:44,645 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 [2018-11-12 20:29:44,649 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 [2018-11-12 20:29:44,650 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:44,651 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:44,652 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:44,653 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-11-12 20:29:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:44,738 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:29:45,148 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 45 treesize of output 39 [2018-11-12 20:29:45,244 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:45,244 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:45,249 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:45,262 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 47 [2018-11-12 20:29:45,263 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:45,269 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:45,271 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 [2018-11-12 20:29:45,272 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:45,305 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:45,309 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:45,310 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:45,319 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 32 treesize of output 47 [2018-11-12 20:29:45,321 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:45,338 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:45,397 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. [2018-11-12 20:29:45,398 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:61, output treesize:22 [2018-11-12 20:29:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:46,688 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:29:46,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 16] total 44 [2018-11-12 20:29:46,688 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:29:46,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-12 20:29:46,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-12 20:29:46,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1662, Unknown=0, NotChecked=0, Total=1892 [2018-11-12 20:29:46,690 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 33 states. [2018-11-12 20:29:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:29:56,699 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2018-11-12 20:29:56,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 20:29:56,700 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 40 [2018-11-12 20:29:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:29:56,701 INFO L225 Difference]: With dead ends: 133 [2018-11-12 20:29:56,701 INFO L226 Difference]: Without dead ends: 131 [2018-11-12 20:29:56,703 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=437, Invalid=3103, Unknown=0, NotChecked=0, Total=3540 [2018-11-12 20:29:56,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-11-12 20:29:56,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 93. [2018-11-12 20:29:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-11-12 20:29:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2018-11-12 20:29:56,716 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 40 [2018-11-12 20:29:56,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:29:56,716 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2018-11-12 20:29:56,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-12 20:29:56,716 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2018-11-12 20:29:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-12 20:29:56,718 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:29:56,718 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] [2018-11-12 20:29:56,718 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:29:56,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:29:56,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1042006481, now seen corresponding path program 4 times [2018-11-12 20:29:56,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:29:56,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:29:56,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:29:56,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:29:56,720 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:29:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:29:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:57,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:29:57,232 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:29:57,232 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:29:57,232 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:29:57,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:29:57,232 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:29:57,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:29:57,242 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:29:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:29:57,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:29:57,406 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 38 treesize of output 31 [2018-11-12 20:29:57,410 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:57,410 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 31 treesize of output 47 [2018-11-12 20:29:57,411 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:57,418 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:57,431 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-12 20:29:57,432 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:49, output treesize:45 [2018-11-12 20:29:57,547 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:57,548 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 52 [2018-11-12 20:29:57,554 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:57,555 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:57,556 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 58 [2018-11-12 20:29:57,557 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:57,571 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:57,586 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. [2018-11-12 20:29:57,587 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:64, output treesize:29 [2018-11-12 20:29:57,675 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2018-11-12 20:29:57,678 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:57,679 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:57,680 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:57,681 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:57,683 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:29:57,684 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 31 treesize of output 49 [2018-11-12 20:29:57,685 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:57,693 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:57,700 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:57,701 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:45, output treesize:5 [2018-11-12 20:29:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:29:57,719 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:29:58,062 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 77 treesize of output 67 [2018-11-12 20:29:58,078 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,079 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 67 treesize of output 68 [2018-11-12 20:29:58,164 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,164 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,165 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,165 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,167 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,167 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,168 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,177 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 87 [2018-11-12 20:29:58,180 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:58,190 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,190 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,191 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,191 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,193 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,193 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,194 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 90 [2018-11-12 20:29:58,205 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:58,208 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,208 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,209 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,210 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,212 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,213 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,224 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 86 [2018-11-12 20:29:58,226 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:58,228 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,229 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,229 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,230 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,231 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 62 [2018-11-12 20:29:58,232 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:58,235 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,235 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,235 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,236 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,238 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,239 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,239 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,248 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 87 [2018-11-12 20:29:58,251 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:58,262 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,262 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,263 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,263 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,266 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,267 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:29:58,280 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 86 [2018-11-12 20:29:58,281 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-12 20:29:58,290 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:29:58,290 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-12 20:29:58,320 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:58,323 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:29:58,331 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. [2018-11-12 20:29:58,331 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 5 variables, input treesize:87, output treesize:16 [2018-11-12 20:29:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-12 20:29:58,387 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:29:58,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 12] total 35 [2018-11-12 20:29:58,387 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:29:58,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-12 20:29:58,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-12 20:29:58,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1057, Unknown=0, NotChecked=0, Total=1190 [2018-11-12 20:29:58,388 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 25 states. [2018-11-12 20:30:00,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:30:00,104 INFO L93 Difference]: Finished difference Result 211 states and 249 transitions. [2018-11-12 20:30:00,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 20:30:00,104 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 39 [2018-11-12 20:30:00,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:30:00,106 INFO L225 Difference]: With dead ends: 211 [2018-11-12 20:30:00,107 INFO L226 Difference]: Without dead ends: 167 [2018-11-12 20:30:00,108 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=516, Invalid=2790, Unknown=0, NotChecked=0, Total=3306 [2018-11-12 20:30:00,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-11-12 20:30:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 97. [2018-11-12 20:30:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-11-12 20:30:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2018-11-12 20:30:00,124 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 39 [2018-11-12 20:30:00,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:30:00,124 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2018-11-12 20:30:00,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-12 20:30:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2018-11-12 20:30:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-12 20:30:00,126 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:30:00,126 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] [2018-11-12 20:30:00,126 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:30:00,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:30:00,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1926599722, now seen corresponding path program 2 times [2018-11-12 20:30:00,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:30:00,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:30:00,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:30:00,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:30:00,128 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:30:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:30:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:30:00,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:30:00,895 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:30:00,895 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:30:00,895 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:30:00,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:30:00,895 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 20:30:00,904 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-12 20:30:00,904 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-12 20:30:00,955 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-12 20:30:00,955 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:30:00,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:30:01,007 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 [2018-11-12 20:30:01,049 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,059 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 [2018-11-12 20:30:01,059 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,064 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,072 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,073 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:31 [2018-11-12 20:30:01,178 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 32 treesize of output 25 [2018-11-12 20:30:01,183 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,184 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,185 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,188 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 25 treesize of output 58 [2018-11-12 20:30:01,189 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,200 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,211 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,211 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:50, output treesize:29 [2018-11-12 20:30:01,229 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 41 treesize of output 32 [2018-11-12 20:30:01,272 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,294 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,317 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,336 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,341 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,342 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,347 INFO L303 Elim1Store]: Index analysis took 116 ms [2018-11-12 20:30:01,348 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 103 [2018-11-12 20:30:01,349 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,369 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,379 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,379 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:60, output treesize:56 [2018-11-12 20:30:01,490 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 53 treesize of output 42 [2018-11-12 20:30:01,493 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,494 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,495 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,496 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,497 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,498 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:01,511 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 106 [2018-11-12 20:30:01,512 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,527 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,537 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,537 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:72, output treesize:19 [2018-11-12 20:30:01,552 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 [2018-11-12 20:30:01,555 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 [2018-11-12 20:30:01,555 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,557 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,559 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:01,559 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-11-12 20:30:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:30:01,582 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:30:03,696 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-12 20:30:05,790 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-12 20:30:25,534 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 105 treesize of output 95 [2018-11-12 20:30:25,561 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,562 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,571 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 107 [2018-11-12 20:30:25,576 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,577 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,577 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,618 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 74 treesize of output 132 [2018-11-12 20:30:25,870 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2018-11-12 20:30:25,874 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,874 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,877 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,877 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,878 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,879 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,879 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,880 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:25,880 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,881 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,893 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 113 [2018-11-12 20:30:25,894 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:25,897 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:30:25,897 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:25,900 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,907 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,907 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,910 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,910 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,913 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:25,916 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,919 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,947 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 109 [2018-11-12 20:30:25,948 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-11-12 20:30:25,959 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,963 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,963 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,965 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,965 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,968 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,968 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,970 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:25,972 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,972 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,985 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 113 [2018-11-12 20:30:25,985 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:25,991 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,991 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,994 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:25,997 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:25,997 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 73 [2018-11-12 20:30:26,006 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:26,017 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:30:26,017 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:26,023 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,029 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,029 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,032 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,032 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,034 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:26,037 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,037 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,061 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 109 [2018-11-12 20:30:26,063 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-11-12 20:30:26,302 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,305 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,307 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,307 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,313 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,313 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,586 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 141 [2018-11-12 20:30:26,592 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 16 xjuncts. [2018-11-12 20:30:26,617 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,630 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,640 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,671 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,684 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,698 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,698 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,700 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,702 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,702 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,705 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:26,728 INFO L303 Elim1Store]: Index analysis took 135 ms [2018-11-12 20:30:26,757 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 191 [2018-11-12 20:30:26,769 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 29 xjuncts. [2018-11-12 20:30:27,044 INFO L267 ElimStorePlain]: Start of recursive call 4: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:30:27,068 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:30:27,071 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,074 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 77 treesize of output 84 [2018-11-12 20:30:27,077 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,078 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,078 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,082 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 62 treesize of output 94 [2018-11-12 20:30:27,173 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,175 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,175 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,175 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,176 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,177 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,178 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,178 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,179 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,180 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,200 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 121 [2018-11-12 20:30:27,202 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2018-11-12 20:30:27,205 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:30:27,205 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:27,208 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,210 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,211 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,211 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,211 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,212 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,212 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,213 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,213 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,214 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,233 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 121 [2018-11-12 20:30:27,235 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2018-11-12 20:30:27,240 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,242 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,242 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,242 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,243 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,243 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,244 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,244 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,245 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,246 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,266 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 121 [2018-11-12 20:30:27,268 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-11-12 20:30:27,272 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,274 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,275 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,275 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,276 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,277 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,277 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,278 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,278 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,279 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,297 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 121 [2018-11-12 20:30:27,299 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 2 xjuncts. [2018-11-12 20:30:27,302 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:27,303 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,304 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,304 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,311 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 57 [2018-11-12 20:30:27,312 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:27,315 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:30:27,316 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:27,382 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:30:27,392 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:30:27,399 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,420 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 136 treesize of output 139 [2018-11-12 20:30:27,427 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,428 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:27,488 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 127 treesize of output 191 [2018-11-12 20:30:28,013 WARN L179 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 142 [2018-11-12 20:30:28,023 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,024 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:28,024 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,025 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,025 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,031 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 111 [2018-11-12 20:30:28,032 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,035 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,036 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,036 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,040 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 98 treesize of output 96 [2018-11-12 20:30:28,041 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,044 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,045 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:28,046 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,046 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,047 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,052 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 117 [2018-11-12 20:30:28,053 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,058 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,059 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,059 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,063 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 87 treesize of output 85 [2018-11-12 20:30:28,064 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,066 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:30:28,067 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,069 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,069 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,070 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,070 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,071 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,072 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,072 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,081 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 94 treesize of output 115 [2018-11-12 20:30:28,083 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,086 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,087 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:28,087 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,088 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,088 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,093 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 106 [2018-11-12 20:30:28,095 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,118 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,121 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:28,121 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,122 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,122 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,127 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 117 [2018-11-12 20:30:28,128 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,153 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,169 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,178 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,191 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,200 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,214 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,223 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,254 INFO L303 Elim1Store]: Index analysis took 124 ms [2018-11-12 20:30:28,255 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 98 treesize of output 115 [2018-11-12 20:30:28,256 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,260 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,260 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,261 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,261 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,261 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,262 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,262 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,272 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 101 treesize of output 122 [2018-11-12 20:30:28,273 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,276 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,276 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,277 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,277 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,278 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,278 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,279 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,288 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 101 treesize of output 120 [2018-11-12 20:30:28,290 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,300 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,301 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,301 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,302 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,302 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,302 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,303 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,311 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 105 treesize of output 122 [2018-11-12 20:30:28,312 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:28,314 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,316 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,316 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,317 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,318 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,318 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,335 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 103 treesize of output 133 [2018-11-12 20:30:28,337 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 2 xjuncts. [2018-11-12 20:30:28,340 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,341 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,342 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,342 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,342 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,343 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,359 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 107 treesize of output 133 [2018-11-12 20:30:28,361 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 2 xjuncts. [2018-11-12 20:30:28,364 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,364 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,365 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,365 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,366 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,367 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,374 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:28,380 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 105 treesize of output 120 [2018-11-12 20:30:28,381 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:29,092 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,092 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,093 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,093 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,094 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,095 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,095 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,102 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 88 treesize of output 117 [2018-11-12 20:30:29,103 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:29,106 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,107 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,107 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,110 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 81 treesize of output 86 [2018-11-12 20:30:29,110 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:29,273 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,274 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,308 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 130 [2018-11-12 20:30:29,310 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 8 xjuncts. [2018-11-12 20:30:29,313 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,315 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,316 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,316 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,319 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,319 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,323 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,359 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 3 case distinctions, treesize of input 103 treesize of output 170 [2018-11-12 20:30:29,362 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 7 xjuncts. [2018-11-12 20:30:29,643 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,644 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,645 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,646 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:29,646 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,651 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 75 [2018-11-12 20:30:29,652 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:29,655 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,655 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,655 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,656 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,656 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,657 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,658 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,659 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:29,660 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,660 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,670 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 108 [2018-11-12 20:30:29,671 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:29,828 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,832 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,835 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,836 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,836 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,879 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 146 [2018-11-12 20:30:29,888 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 32 xjuncts. [2018-11-12 20:30:29,923 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,938 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,944 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,944 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,945 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,945 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,947 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,950 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,951 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:29,955 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 177 [2018-11-12 20:30:30,011 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 12 xjuncts. [2018-11-12 20:30:30,040 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,054 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,085 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,099 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,108 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,123 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,155 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,170 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,201 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,214 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,227 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,239 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,257 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,282 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,285 INFO L303 Elim1Store]: Index analysis took 272 ms [2018-11-12 20:30:30,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 186 [2018-11-12 20:30:30,309 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 8 xjuncts. [2018-11-12 20:30:30,332 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,391 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,410 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,410 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:30,425 INFO L303 Elim1Store]: Index analysis took 115 ms [2018-11-12 20:30:30,454 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 3 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 132 [2018-11-12 20:30:30,457 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 8 xjuncts. [2018-11-12 20:30:30,747 INFO L267 ElimStorePlain]: Start of recursive call 24: 6 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:30:30,789 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:30:30,820 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:30:30,844 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:30:30,845 INFO L202 ElimStorePlain]: Needed 49 recursive calls to eliminate 5 variables, input treesize:113, output treesize:33 [2018-11-12 20:30:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 37 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:30:30,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:30:30,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 21] total 39 [2018-11-12 20:30:30,933 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:30:30,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 20:30:30,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 20:30:30,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1269, Unknown=9, NotChecked=0, Total=1482 [2018-11-12 20:30:30,934 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 21 states. [2018-11-12 20:30:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:30:32,074 INFO L93 Difference]: Finished difference Result 193 states and 222 transitions. [2018-11-12 20:30:32,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 20:30:32,075 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 43 [2018-11-12 20:30:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:30:32,077 INFO L225 Difference]: With dead ends: 193 [2018-11-12 20:30:32,077 INFO L226 Difference]: Without dead ends: 191 [2018-11-12 20:30:32,078 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 56 SyntacticMatches, 12 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=461, Invalid=2080, Unknown=9, NotChecked=0, Total=2550 [2018-11-12 20:30:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-11-12 20:30:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 121. [2018-11-12 20:30:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-11-12 20:30:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2018-11-12 20:30:32,093 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 43 [2018-11-12 20:30:32,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:30:32,094 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2018-11-12 20:30:32,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 20:30:32,094 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2018-11-12 20:30:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-12 20:30:32,095 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:30:32,095 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] [2018-11-12 20:30:32,095 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:30:32,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:30:32,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1130767443, now seen corresponding path program 1 times [2018-11-12 20:30:32,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:30:32,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:30:32,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:30:32,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:30:32,097 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:30:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:30:32,483 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-11-12 20:30:32,677 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 3 [2018-11-12 20:30:32,917 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2018-11-12 20:30:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:30:33,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:30:33,178 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:30:33,178 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-11-12 20:30:33,178 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] [2018-11-12 20:30:33,180 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:30:33,180 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:30:33,186 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 20:30:33,358 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:30:33,358 INFO L272 AbstractInterpreter]: Visited 28 different actions 232 times. Merged at 16 different actions 124 times. Widened at 5 different actions 12 times. Performed 1164 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1164 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 17 fixpoints after 6 different actions. Largest state had 26 variables. [2018-11-12 20:30:33,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:30:33,396 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:30:33,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:30:33,396 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:30:33,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:30:33,412 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:30:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:30:33,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:30:33,948 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 [2018-11-12 20:30:33,951 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:33,951 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 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 35 [2018-11-12 20:30:33,952 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:33,957 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:33,966 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:33,967 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2018-11-12 20:30:34,075 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:34,076 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 [2018-11-12 20:30:34,078 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:34,079 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:34,080 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 49 [2018-11-12 20:30:34,080 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:34,088 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:34,100 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. [2018-11-12 20:30:34,100 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:30 [2018-11-12 20:30:34,377 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 32 treesize of output 24 [2018-11-12 20:30:34,380 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:34,381 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:34,382 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:34,383 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 24 treesize of output 31 [2018-11-12 20:30:34,384 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:34,388 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:34,394 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:34,394 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:5 [2018-11-12 20:30:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:30:34,620 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:30:34,939 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 79 treesize of output 69 [2018-11-12 20:30:34,950 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:34,951 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 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 70 [2018-11-12 20:30:35,024 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,027 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,027 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,028 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,028 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,029 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,029 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,034 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 85 [2018-11-12 20:30:35,035 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:35,038 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,039 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,039 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,040 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,040 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,040 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,041 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,046 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,047 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 88 [2018-11-12 20:30:35,048 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:35,050 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,051 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,051 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,052 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,052 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 55 [2018-11-12 20:30:35,053 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:35,076 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,076 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,077 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,079 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 57 [2018-11-12 20:30:35,080 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:35,083 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,084 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,084 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,084 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,085 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,085 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,086 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,090 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,091 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 89 [2018-11-12 20:30:35,092 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:35,094 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,095 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,095 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,096 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,097 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,098 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,110 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 90 [2018-11-12 20:30:35,111 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-12 20:30:35,114 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,114 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,114 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,115 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,115 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,116 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,117 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,121 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:35,122 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 88 [2018-11-12 20:30:35,123 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:35,162 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:30:35,171 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:30:35,184 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:30:35,185 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 4 variables, input treesize:87, output treesize:31 [2018-11-12 20:30:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:30:35,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:30:35,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 15] total 43 [2018-11-12 20:30:35,274 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:30:35,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-12 20:30:35,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-12 20:30:35,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2018-11-12 20:30:35,275 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 33 states. [2018-11-12 20:30:38,036 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-11-12 20:30:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:30:38,398 INFO L93 Difference]: Finished difference Result 221 states and 253 transitions. [2018-11-12 20:30:38,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-12 20:30:38,399 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 44 [2018-11-12 20:30:38,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:30:38,401 INFO L225 Difference]: With dead ends: 221 [2018-11-12 20:30:38,401 INFO L226 Difference]: Without dead ends: 219 [2018-11-12 20:30:38,403 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=536, Invalid=4294, Unknown=0, NotChecked=0, Total=4830 [2018-11-12 20:30:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-11-12 20:30:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 151. [2018-11-12 20:30:38,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-11-12 20:30:38,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2018-11-12 20:30:38,428 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 44 [2018-11-12 20:30:38,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:30:38,429 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2018-11-12 20:30:38,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-12 20:30:38,429 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2018-11-12 20:30:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-12 20:30:38,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:30:38,431 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] [2018-11-12 20:30:38,431 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:30:38,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:30:38,431 INFO L82 PathProgramCache]: Analyzing trace with hash 596360874, now seen corresponding path program 3 times [2018-11-12 20:30:38,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:30:38,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:30:38,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:30:38,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:30:38,433 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:30:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:30:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:30:39,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:30:39,079 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:30:39,079 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:30:39,079 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:30:39,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:30:39,079 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 20:30:39,087 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-12 20:30:39,088 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-12 20:30:39,109 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-12 20:30:39,109 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:30:39,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:30:39,300 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 [2018-11-12 20:30:39,304 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:39,305 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 [2018-11-12 20:30:39,306 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:39,314 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:39,327 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. [2018-11-12 20:30:39,328 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:42, output treesize:35 [2018-11-12 20:30:39,450 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 37 treesize of output 30 [2018-11-12 20:30:39,453 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:39,454 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:39,454 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:30:39,458 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 30 treesize of output 73 [2018-11-12 20:30:39,459 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:39,470 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:39,483 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. [2018-11-12 20:30:39,484 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:30 [2018-11-12 20:30:39,516 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 [2018-11-12 20:30:39,518 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 [2018-11-12 20:30:39,518 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:30:39,520 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:39,521 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:30:39,521 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-11-12 20:30:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:30:39,541 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:30:41,652 WARN L832 $PredicateComparison]: unable to prove that (forall ((main_~key~0 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_main_~#v~0.base|) (+ (* 4 c_main_~i~0) |c_main_~#v~0.offset| 4) main_~key~0))) (< (select .cse0 |c_main_~#v~0.offset|) (+ (select .cse0 (+ |c_main_~#v~0.offset| 4)) 1)))) is different from false [2018-11-12 20:30:50,211 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-12 20:30:52,239 WARN L832 $PredicateComparison]: unable to prove that (forall ((main_~key~0 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_main_~#v~0.base|) (+ (* 4 c_main_~j~0) |c_main_~#v~0.offset| 4) main_~key~0))) (< (select .cse0 |c_main_~#v~0.offset|) (+ (select .cse0 (+ |c_main_~#v~0.offset| 4)) 1)))) is different from false [2018-11-12 20:30:54,266 WARN L832 $PredicateComparison]: unable to prove that (forall ((v_subst_6 Int)) (let ((.cse0 (store (store (select |c_#memory_int| |c_main_~#v~0.base|) (+ (* 4 c_main_~i~0) |c_main_~#v~0.offset| 4) c_main_~key~0) (+ (* 4 c_main_~j~0) |c_main_~#v~0.offset| 4) v_subst_6))) (< (select .cse0 |c_main_~#v~0.offset|) (+ (select .cse0 (+ |c_main_~#v~0.offset| 4)) 1)))) is different from false [2018-11-12 20:30:56,329 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 24 [2018-11-12 20:30:56,335 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 53 [2018-11-12 20:30:56,338 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,340 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 60 [2018-11-12 20:30:56,410 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,425 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 59 [2018-11-12 20:30:56,427 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2018-11-12 20:30:56,430 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,445 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 38 treesize of output 58 [2018-11-12 20:30:56,446 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-11-12 20:30:56,449 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,451 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,452 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,453 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,453 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 85 [2018-11-12 20:30:56,474 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-11-12 20:30:56,477 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,479 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,479 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,480 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,481 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,500 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 43 treesize of output 84 [2018-11-12 20:30:56,502 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-11-12 20:30:56,505 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,507 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,507 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,509 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,510 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,529 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 85 [2018-11-12 20:30:56,532 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-11-12 20:30:56,535 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,537 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,538 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,539 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,540 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,559 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 83 [2018-11-12 20:30:56,562 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-11-12 20:30:56,564 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,567 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,568 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,570 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,571 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:30:56,605 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 48 treesize of output 83 [2018-11-12 20:30:56,608 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 4 xjuncts. [2018-11-12 20:30:56,763 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-12 20:30:56,800 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-12 20:30:56,841 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-11-12 20:30:56,842 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 4 variables, input treesize:61, output treesize:57 [2018-11-12 20:30:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 17 not checked. [2018-11-12 20:30:57,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:30:57,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 40 [2018-11-12 20:30:57,084 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:30:57,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-12 20:30:57,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-12 20:30:57,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1150, Unknown=6, NotChecked=216, Total=1560 [2018-11-12 20:30:57,087 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand 26 states. [2018-11-12 20:30:59,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:30:59,572 INFO L93 Difference]: Finished difference Result 306 states and 358 transitions. [2018-11-12 20:30:59,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-12 20:30:59,573 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 43 [2018-11-12 20:30:59,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:30:59,576 INFO L225 Difference]: With dead ends: 306 [2018-11-12 20:30:59,576 INFO L226 Difference]: Without dead ends: 304 [2018-11-12 20:30:59,578 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=616, Invalid=3422, Unknown=6, NotChecked=378, Total=4422 [2018-11-12 20:30:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-11-12 20:30:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 180. [2018-11-12 20:30:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-11-12 20:30:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 211 transitions. [2018-11-12 20:30:59,613 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 211 transitions. Word has length 43 [2018-11-12 20:30:59,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:30:59,614 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 211 transitions. [2018-11-12 20:30:59,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-12 20:30:59,614 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 211 transitions. [2018-11-12 20:30:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-12 20:30:59,615 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:30:59,615 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] [2018-11-12 20:30:59,615 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:30:59,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:30:59,615 INFO L82 PathProgramCache]: Analyzing trace with hash -181004637, now seen corresponding path program 3 times [2018-11-12 20:30:59,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:30:59,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:30:59,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:30:59,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:30:59,616 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:30:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:30:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 20:30:59,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:30:59,938 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:30:59,938 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:30:59,938 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:30:59,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:30:59,938 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:30:59,946 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-12 20:30:59,947 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-12 20:30:59,967 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-12 20:30:59,968 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:30:59,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:31:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 20:31:00,026 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:31:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 20:31:00,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:31:00,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-11-12 20:31:00,182 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:31:00,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 20:31:00,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 20:31:00,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-11-12 20:31:00,184 INFO L87 Difference]: Start difference. First operand 180 states and 211 transitions. Second operand 11 states. [2018-11-12 20:31:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:31:00,507 INFO L93 Difference]: Finished difference Result 268 states and 314 transitions. [2018-11-12 20:31:00,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 20:31:00,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2018-11-12 20:31:00,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:31:00,509 INFO L225 Difference]: With dead ends: 268 [2018-11-12 20:31:00,509 INFO L226 Difference]: Without dead ends: 231 [2018-11-12 20:31:00,510 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2018-11-12 20:31:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-11-12 20:31:00,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 187. [2018-11-12 20:31:00,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-11-12 20:31:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 217 transitions. [2018-11-12 20:31:00,542 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 217 transitions. Word has length 49 [2018-11-12 20:31:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:31:00,543 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 217 transitions. [2018-11-12 20:31:00,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 20:31:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 217 transitions. [2018-11-12 20:31:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-12 20:31:00,544 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:31:00,544 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] [2018-11-12 20:31:00,544 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:31:00,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:31:00,544 INFO L82 PathProgramCache]: Analyzing trace with hash 238443826, now seen corresponding path program 4 times [2018-11-12 20:31:00,544 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:31:00,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:31:00,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:31:00,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:31:00,546 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:31:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:31:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:31:01,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:31:01,046 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:31:01,046 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:31:01,046 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:31:01,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:31:01,046 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 20:31:01,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:31:01,057 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:31:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:31:01,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:31:01,231 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 [2018-11-12 20:31:01,233 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:01,234 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 [2018-11-12 20:31:01,235 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:31:01,240 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:01,250 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:01,250 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:27 [2018-11-12 20:31:01,341 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 32 treesize of output 25 [2018-11-12 20:31:01,344 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:01,346 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:01,347 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:01,351 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 25 treesize of output 58 [2018-11-12 20:31:01,352 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:31:01,361 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:01,373 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:01,373 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:19 [2018-11-12 20:31:01,814 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 [2018-11-12 20:31:01,817 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 [2018-11-12 20:31:01,818 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:31:01,819 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:01,821 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:01,821 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-11-12 20:31:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:31:01,916 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:31:02,467 WARN L832 $PredicateComparison]: unable to prove that (forall ((main_~key~0 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_main_~#v~0.base|) (+ (* 4 c_main_~i~0) |c_main_~#v~0.offset| 4) main_~key~0))) (<= (select .cse0 (+ (* 4 1) |c_main_~#v~0.offset|)) (select .cse0 (+ |c_main_~#v~0.offset| (* 4 2)))))) is different from false [2018-11-12 20:31:27,482 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 63 treesize of output 57 [2018-11-12 20:31:27,484 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,488 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 57 treesize of output 64 [2018-11-12 20:31:27,587 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,588 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,593 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,593 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,595 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,626 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 [2018-11-12 20:31:27,628 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2018-11-12 20:31:27,631 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,631 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,637 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,637 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,639 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,669 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 [2018-11-12 20:31:27,671 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-11-12 20:31:27,675 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,677 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,681 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,683 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,683 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,710 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 [2018-11-12 20:31:27,712 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-11-12 20:31:27,719 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,744 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 [2018-11-12 20:31:27,745 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-11-12 20:31:27,751 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,752 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,757 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,757 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,759 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,784 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 [2018-11-12 20:31:27,786 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-11-12 20:31:27,791 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,808 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 [2018-11-12 20:31:27,809 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-11-12 20:31:27,812 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,813 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,815 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,816 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,816 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:27,838 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 [2018-11-12 20:31:27,840 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 4 xjuncts. [2018-11-12 20:31:27,934 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-12 20:31:27,955 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-12 20:31:27,981 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-11-12 20:31:27,982 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 5 variables, input treesize:66, output treesize:43 [2018-11-12 20:31:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 21 refuted. 2 times theorem prover too weak. 0 trivial. 10 not checked. [2018-11-12 20:31:28,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:31:28,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 16] total 41 [2018-11-12 20:31:28,055 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:31:28,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-12 20:31:28,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-12 20:31:28,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1406, Unknown=8, NotChecked=76, Total=1640 [2018-11-12 20:31:28,056 INFO L87 Difference]: Start difference. First operand 187 states and 217 transitions. Second operand 34 states. [2018-11-12 20:31:46,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:31:46,234 INFO L93 Difference]: Finished difference Result 279 states and 322 transitions. [2018-11-12 20:31:46,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 20:31:46,235 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 48 [2018-11-12 20:31:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:31:46,237 INFO L225 Difference]: With dead ends: 279 [2018-11-12 20:31:46,238 INFO L226 Difference]: Without dead ends: 277 [2018-11-12 20:31:46,239 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 69 SyntacticMatches, 10 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=449, Invalid=3329, Unknown=8, NotChecked=120, Total=3906 [2018-11-12 20:31:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-11-12 20:31:46,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 195. [2018-11-12 20:31:46,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-11-12 20:31:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 227 transitions. [2018-11-12 20:31:46,273 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 227 transitions. Word has length 48 [2018-11-12 20:31:46,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:31:46,273 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 227 transitions. [2018-11-12 20:31:46,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-12 20:31:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 227 transitions. [2018-11-12 20:31:46,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-12 20:31:46,274 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:31:46,274 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] [2018-11-12 20:31:46,274 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:31:46,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:31:46,275 INFO L82 PathProgramCache]: Analyzing trace with hash 109282112, now seen corresponding path program 4 times [2018-11-12 20:31:46,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:31:46,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:31:46,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:31:46,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:31:46,276 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:31:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:31:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:31:46,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:31:46,656 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:31:46,656 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:31:46,656 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:31:46,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:31:46,656 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:31:46,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:31:46,666 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:31:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:31:46,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:31:46,826 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 [2018-11-12 20:31:46,829 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:46,831 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 [2018-11-12 20:31:46,832 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:31:46,837 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:46,847 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. [2018-11-12 20:31:46,848 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:31 [2018-11-12 20:31:46,877 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 [2018-11-12 20:31:46,880 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 [2018-11-12 20:31:46,880 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:31:46,882 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:46,883 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:46,883 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-11-12 20:31:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:31:46,899 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:31:47,021 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 [2018-11-12 20:31:47,070 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:47,072 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:47,072 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:47,081 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 [2018-11-12 20:31:47,082 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-12 20:31:47,084 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:47,085 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:47,086 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:47,094 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 [2018-11-12 20:31:47,095 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-12 20:31:47,097 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:47,098 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 [2018-11-12 20:31:47,099 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-12 20:31:47,119 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:31:47,126 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:47,126 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:45, output treesize:10 [2018-11-12 20:31:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:31:47,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:31:47,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 35 [2018-11-12 20:31:47,289 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:31:47,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 20:31:47,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 20:31:47,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2018-11-12 20:31:47,290 INFO L87 Difference]: Start difference. First operand 195 states and 227 transitions. Second operand 22 states. [2018-11-12 20:31:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:31:49,541 INFO L93 Difference]: Finished difference Result 514 states and 610 transitions. [2018-11-12 20:31:49,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-12 20:31:49,541 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 47 [2018-11-12 20:31:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:31:49,544 INFO L225 Difference]: With dead ends: 514 [2018-11-12 20:31:49,544 INFO L226 Difference]: Without dead ends: 423 [2018-11-12 20:31:49,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=967, Invalid=5513, Unknown=0, NotChecked=0, Total=6480 [2018-11-12 20:31:49,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-11-12 20:31:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 255. [2018-11-12 20:31:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-11-12 20:31:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 302 transitions. [2018-11-12 20:31:49,603 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 302 transitions. Word has length 47 [2018-11-12 20:31:49,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:31:49,604 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 302 transitions. [2018-11-12 20:31:49,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 20:31:49,604 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 302 transitions. [2018-11-12 20:31:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-12 20:31:49,605 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:31:49,605 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] [2018-11-12 20:31:49,605 INFO L423 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:31:49,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:31:49,605 INFO L82 PathProgramCache]: Analyzing trace with hash -2102023659, now seen corresponding path program 1 times [2018-11-12 20:31:49,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:31:49,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:31:49,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:31:49,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:31:49,606 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:31:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:31:50,118 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-11-12 20:31:50,514 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-11-12 20:31:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:31:51,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:31:51,227 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:31:51,227 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2018-11-12 20:31:51,228 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] [2018-11-12 20:31:51,230 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:31:51,230 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:31:51,243 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 20:31:51,405 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:31:51,405 INFO L272 AbstractInterpreter]: Visited 29 different actions 216 times. Merged at 17 different actions 111 times. Widened at 5 different actions 9 times. Performed 1044 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1044 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 25 fixpoints after 7 different actions. Largest state had 26 variables. [2018-11-12 20:31:51,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:31:51,441 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:31:51,441 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:31:51,441 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 20:31:51,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:31:51,454 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:31:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:31:51,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:31:51,698 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 23 [2018-11-12 20:31:51,701 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:51,703 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 [2018-11-12 20:31:51,704 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:31:51,710 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:51,719 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:51,720 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:30 [2018-11-12 20:31:51,787 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 40 treesize of output 31 [2018-11-12 20:31:51,790 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:51,791 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:51,793 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:51,796 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 31 treesize of output 66 [2018-11-12 20:31:51,797 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:31:51,807 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:51,821 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-12 20:31:51,821 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:54, output treesize:50 [2018-11-12 20:31:51,980 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 60 treesize of output 47 [2018-11-12 20:31:51,984 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:51,985 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:51,986 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:51,987 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:51,989 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:51,990 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:51,991 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:51,991 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:31:52,001 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 47 treesize of output 131 [2018-11-12 20:31:52,001 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:31:52,018 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:52,034 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-12 20:31:52,034 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:77, output treesize:54 [2018-11-12 20:31:52,235 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 56 treesize of output 45 [2018-11-12 20:31:52,244 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:52,245 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:52,245 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:52,246 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:52,247 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:31:52,266 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 125 [2018-11-12 20:31:52,267 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-12 20:31:52,310 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:31:52,342 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-11-12 20:31:52,342 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:73, output treesize:85 [2018-11-12 20:31:52,595 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 [2018-11-12 20:31:52,597 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 [2018-11-12 20:31:52,598 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:31:52,599 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:52,601 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:31:52,601 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-11-12 20:31:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:31:52,662 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:32:05,557 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 189 treesize of output 171 [2018-11-12 20:32:05,590 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:05,615 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 244 treesize of output 203 [2018-11-12 20:32:05,721 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:05,721 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:05,722 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:05,733 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:05,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 156 treesize of output 255 [2018-11-12 20:32:06,298 WARN L179 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 131 [2018-11-12 20:32:06,302 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,303 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,314 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 118 treesize of output 130 [2018-11-12 20:32:06,315 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:06,319 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,320 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,320 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,321 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,322 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,324 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,338 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 138 treesize of output 172 [2018-11-12 20:32:06,339 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:06,342 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,343 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,343 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,344 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,344 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,345 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,347 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,353 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 113 treesize of output 140 [2018-11-12 20:32:06,353 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:06,690 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,691 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:06,692 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,696 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,696 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,707 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,729 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 149 [2018-11-12 20:32:06,731 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-11-12 20:32:06,758 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,758 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,759 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,759 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,759 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,760 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,761 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:06,761 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,803 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:06,903 INFO L303 Elim1Store]: Index analysis took 171 ms [2018-11-12 20:32:06,904 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 0 case distinctions, treesize of input 98 treesize of output 144 [2018-11-12 20:32:06,905 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:07,129 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,178 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 112 treesize of output 185 [2018-11-12 20:32:07,184 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 32 xjuncts. [2018-11-12 20:32:07,187 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,188 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,188 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,190 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,196 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,197 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,200 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,240 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 112 treesize of output 209 [2018-11-12 20:32:07,245 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 16 xjuncts. [2018-11-12 20:32:07,835 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,837 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,837 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,838 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,839 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,839 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,840 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,841 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,845 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,850 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,864 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 153 [2018-11-12 20:32:07,867 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 4 xjuncts. [2018-11-12 20:32:07,869 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,870 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,870 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,871 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,871 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,871 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,876 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,878 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 91 [2018-11-12 20:32:07,879 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:07,883 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,884 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,884 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,885 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,885 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,886 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,888 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:07,893 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 56 treesize of output 89 [2018-11-12 20:32:07,893 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:08,141 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,141 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,142 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,142 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,143 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,147 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,157 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 95 [2018-11-12 20:32:08,159 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:08,160 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,161 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 41 treesize of output 34 [2018-11-12 20:32:08,161 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:08,284 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,286 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,289 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,290 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,310 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,350 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 140 [2018-11-12 20:32:08,358 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 15 xjuncts. [2018-11-12 20:32:08,389 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,390 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,390 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,392 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,397 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,399 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,401 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,433 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 126 [2018-11-12 20:32:08,436 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 7 xjuncts. [2018-11-12 20:32:08,439 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,447 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,453 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,459 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,459 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,473 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,484 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:08,571 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 70 treesize of output 223 [2018-11-12 20:32:08,572 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-11-12 20:32:08,688 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 82 xjuncts. [2018-11-12 20:32:10,200 INFO L267 ElimStorePlain]: Start of recursive call 4: 6 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:32:10,207 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:10,208 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:10,209 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:10,222 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:10,298 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 261 treesize of output 316 [2018-11-12 20:32:11,318 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 284 DAG size of output: 142 [2018-11-12 20:32:11,318 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-12 20:32:11,319 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-12 20:32:11,319 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-12 20:32:11,324 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,324 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,325 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,325 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,326 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,326 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,329 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,330 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,330 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,331 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,332 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,332 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,333 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,334 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,339 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,350 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,353 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,362 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 272 [2018-11-12 20:32:11,364 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:11,367 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,368 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,368 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,368 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,369 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,370 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,370 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,371 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,372 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,372 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,376 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,384 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 113 treesize of output 171 [2018-11-12 20:32:11,385 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:11,389 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,391 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,392 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,392 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,393 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,394 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,394 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,395 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,396 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,402 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,404 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,414 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 1 case distinctions, treesize of input 142 treesize of output 212 [2018-11-12 20:32:11,415 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:11,844 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,844 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,845 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,846 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,849 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 56 [2018-11-12 20:32:11,850 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:11,853 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,853 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,853 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,854 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,856 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 67 [2018-11-12 20:32:11,857 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:11,859 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,860 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,860 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,861 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,861 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,862 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:11,863 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 69 [2018-11-12 20:32:11,864 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:12,059 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,060 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,060 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,061 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,063 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,064 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,068 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,074 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,075 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,078 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,134 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 2 new quantified variables, introduced 5 case distinctions, treesize of input 112 treesize of output 251 [2018-11-12 20:32:12,141 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 28 xjuncts. [2018-11-12 20:32:12,144 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,149 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,149 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,155 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,159 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,159 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,159 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,172 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,177 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:12,230 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 136 treesize of output 300 [2018-11-12 20:32:12,231 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-11-12 20:32:12,254 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 60 xjuncts. [2018-11-12 20:32:13,442 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,444 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,446 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,450 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,450 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,481 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 67 treesize of output 112 [2018-11-12 20:32:13,483 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 4 xjuncts. [2018-11-12 20:32:13,487 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,487 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,491 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,491 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,493 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,493 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,498 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,499 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,510 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 132 [2018-11-12 20:32:13,511 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:13,516 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,518 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,520 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,522 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,524 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,532 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,548 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 110 treesize of output 154 [2018-11-12 20:32:13,550 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 3 xjuncts. [2018-11-12 20:32:13,553 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,553 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,557 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,557 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,563 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,565 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,570 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,595 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 2 case distinctions, treesize of input 63 treesize of output 106 [2018-11-12 20:32:13,597 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 3 xjuncts. [2018-11-12 20:32:13,602 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,604 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,604 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,606 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,606 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,608 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,608 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,610 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,610 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,611 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,611 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,614 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 113 [2018-11-12 20:32:13,615 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:13,622 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,628 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,628 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,630 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,630 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,658 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 107 treesize of output 135 [2018-11-12 20:32:13,659 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:13,664 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,664 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,668 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,670 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,672 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,672 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,676 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,703 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 78 treesize of output 128 [2018-11-12 20:32:13,705 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 3 xjuncts. [2018-11-12 20:32:13,709 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,709 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,714 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,714 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,716 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,718 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,722 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,724 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,765 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 66 treesize of output 150 [2018-11-12 20:32:13,768 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 7 xjuncts. [2018-11-12 20:32:13,772 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,772 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,774 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,774 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,778 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,778 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,780 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,789 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 125 [2018-11-12 20:32:13,790 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:13,794 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,794 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,798 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,800 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,802 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,809 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,831 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 95 treesize of output 145 [2018-11-12 20:32:13,834 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 3 xjuncts. [2018-11-12 20:32:13,838 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,844 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,844 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,846 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,846 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:13,847 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 65 [2018-11-12 20:32:13,847 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:14,113 INFO L267 ElimStorePlain]: Start of recursive call 20: 6 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:32:14,115 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:32:14,116 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:14,202 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:32:14,205 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,208 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 125 treesize of output 116 [2018-11-12 20:32:14,239 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,239 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,240 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,241 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,242 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,258 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 163 [2018-11-12 20:32:14,363 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2018-11-12 20:32:14,368 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,369 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,369 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,370 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,372 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,372 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,373 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,374 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,374 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,375 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,382 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,397 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 141 [2018-11-12 20:32:14,398 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:14,402 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,403 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,403 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,404 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,404 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,405 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,405 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,405 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,406 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,410 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,410 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,411 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,413 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,415 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,420 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,425 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,444 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 193 [2018-11-12 20:32:14,447 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 3 xjuncts. [2018-11-12 20:32:14,450 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,450 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,451 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,452 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,452 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,453 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,454 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,456 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,456 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,458 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,475 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 124 [2018-11-12 20:32:14,476 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:14,572 INFO L267 ElimStorePlain]: Start of recursive call 42: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:32:14,576 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,576 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,577 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,578 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,579 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,593 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 143 [2018-11-12 20:32:14,681 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,682 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,682 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,683 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,685 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,686 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,686 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,687 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,699 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,719 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 53 treesize of output 138 [2018-11-12 20:32:14,721 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 4 xjuncts. [2018-11-12 20:32:14,725 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,726 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,726 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,727 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,728 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,728 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,729 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,730 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,730 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,731 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,734 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,735 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,735 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,740 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,752 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,769 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 190 [2018-11-12 20:32:14,771 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 3 xjuncts. [2018-11-12 20:32:14,775 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,775 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,776 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,777 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,777 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,778 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,778 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,779 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,781 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,783 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,799 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 129 [2018-11-12 20:32:14,800 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:14,876 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:14,878 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:32:14,878 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:14,895 INFO L267 ElimStorePlain]: Start of recursive call 41: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:14,899 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,900 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,907 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 151 [2018-11-12 20:32:14,955 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,956 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,957 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,957 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:14,964 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,017 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 7 case distinctions, treesize of input 99 treesize of output 180 [2018-11-12 20:32:15,274 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 87 [2018-11-12 20:32:15,278 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,279 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,279 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,279 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,281 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,282 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,284 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,285 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,290 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,291 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,296 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,342 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 86 treesize of output 231 [2018-11-12 20:32:15,351 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 29 xjuncts. [2018-11-12 20:32:15,354 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,357 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,357 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,362 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,366 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,367 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,387 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,446 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 84 treesize of output 257 [2018-11-12 20:32:15,447 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-11-12 20:32:15,649 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 187 xjuncts. [2018-11-12 20:32:15,675 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,691 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,700 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,712 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,744 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,758 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,814 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,827 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,840 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,903 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,905 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,909 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,909 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,916 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,941 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:15,947 INFO L303 Elim1Store]: Index analysis took 295 ms [2018-11-12 20:32:15,996 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 96 treesize of output 313 [2018-11-12 20:32:15,996 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-11-12 20:32:16,088 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 131 xjuncts. [2018-11-12 20:32:20,200 INFO L267 ElimStorePlain]: Start of recursive call 52: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:32:20,203 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,205 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,205 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,206 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,213 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,262 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 7 case distinctions, treesize of input 159 treesize of output 212 [2018-11-12 20:32:20,752 WARN L179 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 93 [2018-11-12 20:32:20,756 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,757 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,757 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,758 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,759 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,759 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,760 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,761 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,761 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,762 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,763 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,775 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,778 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 168 [2018-11-12 20:32:20,779 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:20,783 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,784 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,784 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,784 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,785 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,785 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,786 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,786 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,786 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,787 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,788 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,788 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,789 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,790 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,790 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,794 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,798 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,805 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,808 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 18 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 215 [2018-11-12 20:32:20,809 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:20,811 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,812 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,812 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,812 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,813 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,813 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,814 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,814 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,814 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,815 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,818 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:20,826 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 151 [2018-11-12 20:32:20,827 INFO L267 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:21,082 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,083 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,083 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,084 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,085 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,085 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,087 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:21,087 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,091 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,097 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 112 [2018-11-12 20:32:21,098 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:21,101 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,102 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,103 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:21,103 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,104 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,104 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,105 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,105 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,110 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,112 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 113 [2018-11-12 20:32:21,114 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:21,224 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,225 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,225 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,227 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,228 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,228 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,229 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,231 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,235 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,237 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,241 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,290 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 206 [2018-11-12 20:32:21,299 INFO L267 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 29 xjuncts. [2018-11-12 20:32:21,301 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,302 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,302 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,304 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,305 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,308 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,312 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,313 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,318 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,332 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:21,379 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 74 treesize of output 230 [2018-11-12 20:32:21,379 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-11-12 20:32:21,430 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 38 xjuncts. [2018-11-12 20:32:21,849 INFO L267 ElimStorePlain]: Start of recursive call 56: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:32:21,852 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:32:21,852 INFO L267 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:21,870 INFO L267 ElimStorePlain]: Start of recursive call 51: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-12 20:32:21,903 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:32:21,932 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-12 20:32:21,933 INFO L202 ElimStorePlain]: Needed 64 recursive calls to eliminate 4 variables, input treesize:199, output treesize:70 [2018-11-12 20:32:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:32:22,148 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:32:22,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 21] total 55 [2018-11-12 20:32:22,148 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:32:22,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-12 20:32:22,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-12 20:32:22,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2653, Unknown=5, NotChecked=0, Total=2970 [2018-11-12 20:32:22,149 INFO L87 Difference]: Start difference. First operand 255 states and 302 transitions. Second operand 39 states. [2018-11-12 20:32:39,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:32:39,349 INFO L93 Difference]: Finished difference Result 403 states and 471 transitions. [2018-11-12 20:32:39,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-12 20:32:39,349 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 48 [2018-11-12 20:32:39,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:32:39,352 INFO L225 Difference]: With dead ends: 403 [2018-11-12 20:32:39,352 INFO L226 Difference]: Without dead ends: 282 [2018-11-12 20:32:39,354 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 59 SyntacticMatches, 11 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1906 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=662, Invalid=5185, Unknown=5, NotChecked=0, Total=5852 [2018-11-12 20:32:39,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-11-12 20:32:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 247. [2018-11-12 20:32:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-11-12 20:32:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 284 transitions. [2018-11-12 20:32:39,407 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 284 transitions. Word has length 48 [2018-11-12 20:32:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:32:39,408 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 284 transitions. [2018-11-12 20:32:39,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-12 20:32:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 284 transitions. [2018-11-12 20:32:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-12 20:32:39,409 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:32:39,409 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] [2018-11-12 20:32:39,409 INFO L423 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:32:39,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:32:39,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1928821950, now seen corresponding path program 5 times [2018-11-12 20:32:39,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:32:39,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:32:39,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:32:39,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:32:39,433 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:32:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:32:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:32:40,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:32:40,072 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:32:40,072 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:32:40,072 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:32:40,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:32:40,072 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:32:40,082 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-12 20:32:40,082 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-12 20:32:40,104 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-12 20:32:40,105 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:32:40,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:32:40,174 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 38 treesize of output 31 [2018-11-12 20:32:40,176 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:40,177 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 31 treesize of output 47 [2018-11-12 20:32:40,177 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:40,182 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:40,191 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-12 20:32:40,192 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:42 [2018-11-12 20:32:40,336 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:40,337 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 50 treesize of output 52 [2018-11-12 20:32:40,373 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:40,395 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:40,409 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:40,410 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 73 [2018-11-12 20:32:40,410 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:40,565 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:40,702 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. [2018-11-12 20:32:40,702 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:61, output treesize:35 [2018-11-12 20:32:41,056 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 [2018-11-12 20:32:41,059 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:41,060 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:41,064 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:41,080 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 [2018-11-12 20:32:41,081 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:41,091 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:41,102 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. [2018-11-12 20:32:41,103 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:35 [2018-11-12 20:32:41,175 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 [2018-11-12 20:32:41,177 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,178 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:41,179 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:41,180 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,182 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:41,182 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 [2018-11-12 20:32:41,183 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:41,191 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:41,198 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:41,198 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:51, output treesize:5 [2018-11-12 20:32:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-12 20:32:41,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:32:41,589 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 77 treesize of output 67 [2018-11-12 20:32:41,591 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,592 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 67 treesize of output 68 [2018-11-12 20:32:41,669 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,669 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,670 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,671 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,672 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,673 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,685 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 86 [2018-11-12 20:32:41,686 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:41,689 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,690 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,690 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,691 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,692 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,692 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,693 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,701 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 87 [2018-11-12 20:32:41,702 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:41,704 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-12 20:32:41,704 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:41,706 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,706 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,707 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,707 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,708 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 62 [2018-11-12 20:32:41,708 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:41,711 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,711 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,712 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,713 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,714 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,715 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,726 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 86 [2018-11-12 20:32:41,727 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:41,730 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,730 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,731 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,731 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,733 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,734 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,734 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,743 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 87 [2018-11-12 20:32:41,744 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:41,747 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,747 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,748 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,748 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,750 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,751 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,751 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:32:41,760 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 90 [2018-11-12 20:32:41,761 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-12 20:32:41,790 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:41,792 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:41,800 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. [2018-11-12 20:32:41,800 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 5 variables, input treesize:87, output treesize:16 [2018-11-12 20:32:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 36 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-12 20:32:41,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:32:41,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 14] total 39 [2018-11-12 20:32:41,858 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:32:41,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-12 20:32:41,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-12 20:32:41,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1315, Unknown=0, NotChecked=0, Total=1482 [2018-11-12 20:32:41,859 INFO L87 Difference]: Start difference. First operand 247 states and 284 transitions. Second operand 27 states. [2018-11-12 20:32:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:32:47,079 INFO L93 Difference]: Finished difference Result 363 states and 418 transitions. [2018-11-12 20:32:47,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-11-12 20:32:47,080 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 47 [2018-11-12 20:32:47,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:32:47,083 INFO L225 Difference]: With dead ends: 363 [2018-11-12 20:32:47,083 INFO L226 Difference]: Without dead ends: 305 [2018-11-12 20:32:47,085 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=912, Invalid=6744, Unknown=0, NotChecked=0, Total=7656 [2018-11-12 20:32:47,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-11-12 20:32:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 209. [2018-11-12 20:32:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-11-12 20:32:47,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 240 transitions. [2018-11-12 20:32:47,129 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 240 transitions. Word has length 47 [2018-11-12 20:32:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:32:47,130 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 240 transitions. [2018-11-12 20:32:47,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-12 20:32:47,130 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 240 transitions. [2018-11-12 20:32:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-12 20:32:47,131 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:32:47,131 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] [2018-11-12 20:32:47,131 INFO L423 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:32:47,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:32:47,131 INFO L82 PathProgramCache]: Analyzing trace with hash -820359102, now seen corresponding path program 6 times [2018-11-12 20:32:47,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:32:47,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:32:47,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:32:47,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:32:47,132 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:32:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:32:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:32:47,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:32:47,815 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:32:47,816 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:32:47,816 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:32:47,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:32:47,816 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 20:32:47,825 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-12 20:32:47,825 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-12 20:32:47,846 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-12 20:32:47,847 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:32:47,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:32:47,950 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 40 treesize of output 33 [2018-11-12 20:32:47,954 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:47,955 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 33 treesize of output 50 [2018-11-12 20:32:47,955 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:47,961 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:47,975 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:47,975 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:54, output treesize:50 [2018-11-12 20:32:48,110 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,111 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 [2018-11-12 20:32:48,114 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,114 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 48 [2018-11-12 20:32:48,115 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,124 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,140 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. [2018-11-12 20:32:48,140 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:69, output treesize:41 [2018-11-12 20:32:48,173 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 [2018-11-12 20:32:48,175 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,176 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,177 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,178 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,181 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 27 treesize of output 77 [2018-11-12 20:32:48,182 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,192 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,200 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,201 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:42, output treesize:27 [2018-11-12 20:32:48,231 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 [2018-11-12 20:32:48,233 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,234 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,234 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,235 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,236 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,237 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,241 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,244 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 121 [2018-11-12 20:32:48,245 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,262 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,271 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,272 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:51, output treesize:47 [2018-11-12 20:32:48,356 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 44 treesize of output 33 [2018-11-12 20:32:48,359 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,359 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,360 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,361 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,362 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,363 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,366 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,374 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 90 [2018-11-12 20:32:48,375 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,395 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,402 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,403 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:47, output treesize:19 [2018-11-12 20:32:48,429 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 [2018-11-12 20:32:48,431 INFO L700 Elim1Store]: detected not equals via solver [2018-11-12 20:32:48,431 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 [2018-11-12 20:32:48,432 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,433 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,435 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:32:48,435 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:5 [2018-11-12 20:32:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:32:48,460 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:32:51,157 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 29 [2018-11-12 20:32:55,339 WARN L179 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 30 Received shutdown request... [2018-11-12 20:32:59,434 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 20:32:59,635 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:32:59,635 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 20:32:59,641 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 20:32:59,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:32:59 BoogieIcfgContainer [2018-11-12 20:32:59,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 20:32:59,642 INFO L168 Benchmark]: Toolchain (without parser) took 266248.48 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 829.9 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -453.6 MB). Peak memory consumption was 376.4 MB. Max. memory is 7.1 GB. [2018-11-12 20:32:59,642 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-12 20:32:59,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.51 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. [2018-11-12 20:32:59,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.77 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. [2018-11-12 20:32:59,643 INFO L168 Benchmark]: Boogie Preprocessor took 33.94 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. [2018-11-12 20:32:59,643 INFO L168 Benchmark]: RCFGBuilder took 655.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 722.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -767.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2018-11-12 20:32:59,643 INFO L168 Benchmark]: TraceAbstraction took 265202.60 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 107.5 MB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 303.3 MB). Peak memory consumption was 410.7 MB. Max. memory is 7.1 GB. [2018-11-12 20:32:59,645 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 319.51 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 31.77 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.94 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 655.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 722.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -767.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265202.60 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 107.5 MB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 303.3 MB). Peak memory consumption was 410.7 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 48 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 40 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. TIMEOUT Result, 265.1s OverallTime, 20 OverallIterations, 5 TraceHistogramMax, 67.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 694 SDtfs, 2186 SDslu, 6367 SDs, 0 SdLazy, 8437 SolverSat, 1458 SolverUnsat, 26 SolverUnknown, 0 SolverNotchecked, 50.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1931 GetRequests, 974 SyntacticMatches, 96 SemanticMatches, 861 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 14027 ImplicationChecksByTransitivity, 164.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.6s AbstIntTime, 6 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 19 MinimizatonAttempts, 1071 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 181.0s InterpolantComputationTime, 1361 NumberOfCodeBlocks, 1349 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 1974 ConstructedInterpolants, 213 QuantifiedInterpolants, 1221288 SizeOfPredicates, 252 NumberOfNonLiveVariables, 1777 ConjunctsInSsa, 438 ConjunctsInUnsatCore, 53 InterpolantComputations, 2 PerfectInterpolantSequences, 290/1392 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown