java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/vogal_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 11:49:22,233 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 11:49:22,237 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 11:49:22,256 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 11:49:22,256 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 11:49:22,257 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 11:49:22,259 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 11:49:22,262 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 11:49:22,263 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 11:49:22,264 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 11:49:22,265 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 11:49:22,266 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 11:49:22,266 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 11:49:22,267 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 11:49:22,269 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 11:49:22,269 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 11:49:22,270 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 11:49:22,272 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 11:49:22,274 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 11:49:22,276 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 11:49:22,277 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 11:49:22,278 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 11:49:22,281 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 11:49:22,281 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 11:49:22,281 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 11:49:22,282 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 11:49:22,283 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 11:49:22,284 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 11:49:22,285 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 11:49:22,286 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 11:49:22,287 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 11:49:22,287 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 11:49:22,288 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 11:49:22,288 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 11:49:22,289 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 11:49:22,290 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 11:49:22,290 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 11:49:22,314 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 11:49:22,315 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 11:49:22,316 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 11:49:22,316 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 11:49:22,317 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 11:49:22,317 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 11:49:22,317 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 11:49:22,317 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 11:49:22,318 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 11:49:22,318 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 11:49:22,318 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 11:49:22,318 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 11:49:22,318 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 11:49:22,319 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 11:49:22,319 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 11:49:22,319 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 11:49:22,319 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 11:49:22,320 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 11:49:22,320 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 11:49:22,320 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:49:22,320 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 11:49:22,320 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 11:49:22,321 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 11:49:22,321 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 11:49:22,321 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 11:49:22,321 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 11:49:22,321 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 11:49:22,322 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 11:49:22,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 11:49:22,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 11:49:22,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 11:49:22,414 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 11:49:22,415 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 11:49:22,416 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/vogal_true-unreach-call.i [2018-10-24 11:49:22,493 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9d4a6e0b1/1eecba0b9f7e4c8594747aeca30a6c09/FLAG6b8b2d476 [2018-10-24 11:49:22,941 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 11:49:22,942 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal_true-unreach-call.i [2018-10-24 11:49:22,949 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9d4a6e0b1/1eecba0b9f7e4c8594747aeca30a6c09/FLAG6b8b2d476 [2018-10-24 11:49:22,969 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9d4a6e0b1/1eecba0b9f7e4c8594747aeca30a6c09 [2018-10-24 11:49:22,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 11:49:22,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 11:49:22,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 11:49:22,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 11:49:22,987 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 11:49:22,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:49:22" (1/1) ... [2018-10-24 11:49:22,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:22, skipping insertion in model container [2018-10-24 11:49:22,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:49:22" (1/1) ... [2018-10-24 11:49:23,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 11:49:23,027 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 11:49:23,250 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:49:23,257 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 11:49:23,307 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:49:23,345 INFO L193 MainTranslator]: Completed translation [2018-10-24 11:49:23,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23 WrapperNode [2018-10-24 11:49:23,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 11:49:23,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 11:49:23,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 11:49:23,347 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 11:49:23,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23" (1/1) ... [2018-10-24 11:49:23,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23" (1/1) ... [2018-10-24 11:49:23,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 11:49:23,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 11:49:23,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 11:49:23,420 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 11:49:23,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23" (1/1) ... [2018-10-24 11:49:23,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23" (1/1) ... [2018-10-24 11:49:23,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23" (1/1) ... [2018-10-24 11:49:23,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23" (1/1) ... [2018-10-24 11:49:23,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23" (1/1) ... [2018-10-24 11:49:23,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23" (1/1) ... [2018-10-24 11:49:23,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23" (1/1) ... [2018-10-24 11:49:23,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 11:49:23,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 11:49:23,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 11:49:23,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 11:49:23,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:49:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-24 11:49:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 11:49:23,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 11:49:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-24 11:49:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-24 11:49:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-24 11:49:24,304 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 11:49:24,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:49:24 BoogieIcfgContainer [2018-10-24 11:49:24,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 11:49:24,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 11:49:24,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 11:49:24,310 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 11:49:24,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:49:22" (1/3) ... [2018-10-24 11:49:24,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41536533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:49:24, skipping insertion in model container [2018-10-24 11:49:24,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:23" (2/3) ... [2018-10-24 11:49:24,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41536533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:49:24, skipping insertion in model container [2018-10-24 11:49:24,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:49:24" (3/3) ... [2018-10-24 11:49:24,314 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal_true-unreach-call.i [2018-10-24 11:49:24,325 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 11:49:24,335 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 11:49:24,357 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 11:49:24,397 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 11:49:24,398 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 11:49:24,398 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 11:49:24,399 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 11:49:24,399 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 11:49:24,399 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 11:49:24,399 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 11:49:24,399 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 11:49:24,400 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 11:49:24,424 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-10-24 11:49:24,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-24 11:49:24,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:24,434 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:24,437 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:24,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:24,445 INFO L82 PathProgramCache]: Analyzing trace with hash 171948516, now seen corresponding path program 1 times [2018-10-24 11:49:24,447 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:24,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:24,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:24,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:24,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:49:24,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:49:24,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 11:49:24,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 11:49:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 11:49:24,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:49:24,701 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2018-10-24 11:49:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:24,735 INFO L93 Difference]: Finished difference Result 103 states and 131 transitions. [2018-10-24 11:49:24,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 11:49:24,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-10-24 11:49:24,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:24,751 INFO L225 Difference]: With dead ends: 103 [2018-10-24 11:49:24,751 INFO L226 Difference]: Without dead ends: 49 [2018-10-24 11:49:24,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:49:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-24 11:49:24,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-24 11:49:24,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-24 11:49:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2018-10-24 11:49:24,797 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 27 [2018-10-24 11:49:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:24,798 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2018-10-24 11:49:24,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 11:49:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2018-10-24 11:49:24,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-24 11:49:24,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:24,799 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:24,800 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:24,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash -268683175, now seen corresponding path program 1 times [2018-10-24 11:49:24,801 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:24,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:24,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:24,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:24,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:49:24,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:49:24,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 11:49:24,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 11:49:24,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 11:49:24,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 11:49:24,949 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 3 states. [2018-10-24 11:49:25,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:25,200 INFO L93 Difference]: Finished difference Result 106 states and 125 transitions. [2018-10-24 11:49:25,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 11:49:25,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-10-24 11:49:25,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:25,205 INFO L225 Difference]: With dead ends: 106 [2018-10-24 11:49:25,205 INFO L226 Difference]: Without dead ends: 76 [2018-10-24 11:49:25,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 11:49:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-24 11:49:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 51. [2018-10-24 11:49:25,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-24 11:49:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2018-10-24 11:49:25,224 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 33 [2018-10-24 11:49:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:25,224 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2018-10-24 11:49:25,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 11:49:25,224 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2018-10-24 11:49:25,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-24 11:49:25,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:25,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:25,229 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:25,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:25,230 INFO L82 PathProgramCache]: Analyzing trace with hash 493161719, now seen corresponding path program 1 times [2018-10-24 11:49:25,230 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:25,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:25,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:25,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:25,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:49:25,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:25,349 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:25,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:25,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 11:49:25,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:49:25,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2018-10-24 11:49:25,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 11:49:25,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 11:49:25,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:49:25,633 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 7 states. [2018-10-24 11:49:26,495 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-24 11:49:26,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:26,643 INFO L93 Difference]: Finished difference Result 231 states and 278 transitions. [2018-10-24 11:49:26,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 11:49:26,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-10-24 11:49:26,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:26,647 INFO L225 Difference]: With dead ends: 231 [2018-10-24 11:49:26,647 INFO L226 Difference]: Without dead ends: 195 [2018-10-24 11:49:26,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-10-24 11:49:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-24 11:49:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 74. [2018-10-24 11:49:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-24 11:49:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2018-10-24 11:49:26,682 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 36 [2018-10-24 11:49:26,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:26,682 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2018-10-24 11:49:26,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 11:49:26,683 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2018-10-24 11:49:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-24 11:49:26,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:26,685 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:26,685 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:26,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:26,685 INFO L82 PathProgramCache]: Analyzing trace with hash -620855439, now seen corresponding path program 1 times [2018-10-24 11:49:26,686 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:26,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:26,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:26,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:26,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 11:49:27,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:27,020 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:27,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:27,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-24 11:49:27,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:49:27,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-10-24 11:49:27,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 11:49:27,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 11:49:27,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-24 11:49:27,186 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand 6 states. [2018-10-24 11:49:27,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:27,641 INFO L93 Difference]: Finished difference Result 257 states and 319 transitions. [2018-10-24 11:49:27,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 11:49:27,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2018-10-24 11:49:27,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:27,646 INFO L225 Difference]: With dead ends: 257 [2018-10-24 11:49:27,646 INFO L226 Difference]: Without dead ends: 213 [2018-10-24 11:49:27,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 11:49:27,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-24 11:49:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 112. [2018-10-24 11:49:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-24 11:49:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2018-10-24 11:49:27,663 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 50 [2018-10-24 11:49:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:27,664 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2018-10-24 11:49:27,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 11:49:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2018-10-24 11:49:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-24 11:49:27,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:27,667 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:27,667 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:27,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:27,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1329861818, now seen corresponding path program 1 times [2018-10-24 11:49:27,667 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:27,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:27,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:27,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:27,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-24 11:49:27,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:27,794 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:27,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:27,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:28,017 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 15 treesize of output 11 [2018-10-24 11:49:28,020 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-24 11:49:28,021 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:28,043 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:28,066 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:28,067 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-10-24 11:49:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-24 11:49:28,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:49:28,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-24 11:49:28,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 11:49:28,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 11:49:28,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-10-24 11:49:28,159 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand 11 states. [2018-10-24 11:49:28,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:28,872 INFO L93 Difference]: Finished difference Result 428 states and 502 transitions. [2018-10-24 11:49:28,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 11:49:28,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2018-10-24 11:49:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:28,879 INFO L225 Difference]: With dead ends: 428 [2018-10-24 11:49:28,879 INFO L226 Difference]: Without dead ends: 333 [2018-10-24 11:49:28,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-10-24 11:49:28,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-24 11:49:28,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 112. [2018-10-24 11:49:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-24 11:49:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2018-10-24 11:49:28,901 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 57 [2018-10-24 11:49:28,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:28,901 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2018-10-24 11:49:28,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 11:49:28,901 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2018-10-24 11:49:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-24 11:49:28,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:28,904 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:28,904 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:28,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:28,905 INFO L82 PathProgramCache]: Analyzing trace with hash 433473180, now seen corresponding path program 1 times [2018-10-24 11:49:28,905 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:28,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:28,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:28,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:28,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 11:49:29,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:29,162 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:29,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:29,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:29,563 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 16 treesize of output 12 [2018-10-24 11:49:29,570 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-24 11:49:29,570 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:29,575 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:29,576 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:29,577 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-10-24 11:49:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 11:49:29,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:49:29,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2018-10-24 11:49:29,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 11:49:29,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 11:49:29,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-10-24 11:49:29,622 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 12 states. [2018-10-24 11:49:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:30,523 INFO L93 Difference]: Finished difference Result 493 states and 580 transitions. [2018-10-24 11:49:30,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 11:49:30,523 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2018-10-24 11:49:30,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:30,527 INFO L225 Difference]: With dead ends: 493 [2018-10-24 11:49:30,527 INFO L226 Difference]: Without dead ends: 408 [2018-10-24 11:49:30,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2018-10-24 11:49:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-10-24 11:49:30,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 118. [2018-10-24 11:49:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-24 11:49:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2018-10-24 11:49:30,547 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 62 [2018-10-24 11:49:30,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:30,548 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2018-10-24 11:49:30,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 11:49:30,548 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2018-10-24 11:49:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-24 11:49:30,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:30,551 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:30,551 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:30,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:30,552 INFO L82 PathProgramCache]: Analyzing trace with hash 734864085, now seen corresponding path program 1 times [2018-10-24 11:49:30,552 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:30,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:30,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:30,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:30,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-24 11:49:30,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:30,847 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:30,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:30,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:30,929 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-24 11:49:30,930 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:30,998 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:30,999 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-24 11:49:31,206 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,208 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,209 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-10-24 11:49:31,210 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,216 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,216 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2018-10-24 11:49:31,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-24 11:49:31,237 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-24 11:49:31,237 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,239 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,247 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,247 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-10-24 11:49:31,291 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 21 treesize of output 16 [2018-10-24 11:49:31,302 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,305 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,306 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 31 [2018-10-24 11:49:31,307 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,319 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,334 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,334 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2018-10-24 11:49:31,370 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 30 treesize of output 23 [2018-10-24 11:49:31,377 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,379 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,381 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,384 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,387 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,390 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,391 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 78 [2018-10-24 11:49:31,392 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,417 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,441 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,442 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2018-10-24 11:49:31,510 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 39 treesize of output 30 [2018-10-24 11:49:31,527 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,528 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,530 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,532 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,534 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,536 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,538 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,540 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,542 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,544 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,546 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,548 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,550 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 149 [2018-10-24 11:49:31,551 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,613 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,639 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,640 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:49, output treesize:45 [2018-10-24 11:49:31,721 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 48 treesize of output 37 [2018-10-24 11:49:31,725 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,728 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,731 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,732 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,733 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,734 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,734 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,735 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,737 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,738 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,743 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,744 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,744 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,745 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,746 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,747 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,749 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,750 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,754 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,754 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:31,756 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 20 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 244 [2018-10-24 11:49:31,757 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,817 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,838 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:31,839 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2018-10-24 11:49:31,945 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 57 treesize of output 44 [2018-10-24 11:49:31,986 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,008 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,029 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,031 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,034 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,037 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,038 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,038 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,039 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,040 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,041 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,042 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,043 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,045 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,046 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,048 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,049 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,054 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,055 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,056 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,056 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,057 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,058 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,060 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,061 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,063 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,064 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,066 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,067 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,068 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,069 INFO L303 Elim1Store]: Index analysis took 121 ms [2018-10-24 11:49:32,072 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 30 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 363 [2018-10-24 11:49:32,074 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:32,261 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:32,285 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:32,286 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:67, output treesize:63 [2018-10-24 11:49:32,383 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 66 treesize of output 51 [2018-10-24 11:49:32,413 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,415 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,417 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,419 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,421 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,423 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,424 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,425 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,425 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,427 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,428 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,429 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,431 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,432 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,433 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,435 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,436 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,437 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,439 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,440 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,441 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,443 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,444 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,446 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,447 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,448 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,450 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,451 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,454 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,455 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,456 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,458 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,459 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,461 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,462 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,464 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,465 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,467 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,470 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,471 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,473 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,474 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,478 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 42 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 506 [2018-10-24 11:49:32,480 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:32,677 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:32,702 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:32,702 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:76, output treesize:72 [2018-10-24 11:49:32,811 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 75 treesize of output 58 [2018-10-24 11:49:32,818 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,820 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,822 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,824 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,826 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,827 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,828 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,829 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,830 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,832 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,833 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,834 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,836 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,837 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,838 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,840 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,841 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,842 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,844 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,845 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,846 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,848 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,849 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,851 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,852 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,853 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,855 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,856 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,858 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,860 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,861 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,863 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,864 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,866 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,867 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,869 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,870 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,872 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,873 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,875 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,876 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,877 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,879 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,880 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,882 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,883 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,900 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,901 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,902 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,902 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,903 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,905 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,906 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,908 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,909 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,910 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:32,914 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 56 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 673 [2018-10-24 11:49:32,916 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:33,155 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:33,183 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:33,183 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:85, output treesize:81 [2018-10-24 11:49:33,268 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 84 treesize of output 65 [2018-10-24 11:49:33,274 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,276 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,311 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,316 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,343 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,365 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,389 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,415 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,436 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,459 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,486 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,509 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,530 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,552 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,580 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,598 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,604 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,606 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,608 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,610 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,611 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,612 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,613 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,613 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,614 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,615 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,615 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,617 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,618 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,619 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,620 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,621 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,622 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,623 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,624 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,625 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,627 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,628 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,629 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,630 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,632 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,633 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,634 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,635 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,636 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,638 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,639 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,640 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,641 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,642 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,644 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,645 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,646 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,647 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,649 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,650 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,651 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,652 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,653 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,655 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,656 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,657 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,658 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,659 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,661 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,662 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,663 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,667 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,670 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,671 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,672 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,673 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:33,673 INFO L303 Elim1Store]: Index analysis took 402 ms [2018-10-24 11:49:33,676 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 72 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 864 [2018-10-24 11:49:33,678 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:34,198 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:34,229 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:34,230 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:94, output treesize:90 [2018-10-24 11:49:34,365 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 93 treesize of output 72 [2018-10-24 11:49:34,404 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,416 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,419 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,422 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,426 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,427 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,428 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,429 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,431 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,432 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,433 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,434 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,436 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,437 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,438 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,440 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,441 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,442 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,443 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,445 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,446 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,447 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,448 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,449 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,451 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,452 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,453 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,454 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,455 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,457 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,458 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,459 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,460 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,462 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,463 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,464 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,465 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,466 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,468 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,469 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,470 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,471 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,472 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,474 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,475 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,476 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,478 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,479 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,480 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,482 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,483 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,484 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,486 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,487 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,488 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,490 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,491 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,492 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,494 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,495 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,496 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,497 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,499 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,500 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,501 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,503 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,504 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,505 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,507 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,508 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,509 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,511 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,512 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,513 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,515 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,516 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,517 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,519 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,520 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,521 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,522 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,524 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,525 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,526 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,528 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,529 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,530 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,532 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,533 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,534 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:34,535 INFO L303 Elim1Store]: Index analysis took 167 ms [2018-10-24 11:49:34,538 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 90 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 1079 [2018-10-24 11:49:34,541 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:34,954 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:34,987 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:34,988 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:103, output treesize:99 [2018-10-24 11:49:35,077 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 102 treesize of output 79 [2018-10-24 11:49:35,087 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,088 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,089 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,090 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,090 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,091 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,093 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,094 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,095 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,096 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,098 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,099 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,100 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,101 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,102 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,104 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,105 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,106 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,107 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,108 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,110 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,111 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,112 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,113 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,114 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,116 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,117 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,118 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,119 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,121 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,122 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,123 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,124 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,125 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,127 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,128 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,129 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,130 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,131 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,133 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,134 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,135 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,136 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,137 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,139 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,140 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,141 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,142 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,144 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,145 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,146 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,147 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,148 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,150 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,151 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,152 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,154 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,155 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,156 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,158 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,159 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,160 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,162 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,163 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,164 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,166 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,167 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,168 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,170 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,171 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,172 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,173 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,175 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,176 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,177 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,179 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,180 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,181 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,183 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,184 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,185 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,187 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,188 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,189 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,191 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,192 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,193 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,195 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,196 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,197 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,199 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,200 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,201 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,203 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,204 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,205 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,206 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,208 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,209 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,210 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,212 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,213 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,214 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,216 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,217 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,218 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,220 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,221 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,222 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,223 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:35,224 INFO L303 Elim1Store]: Index analysis took 143 ms [2018-10-24 11:49:35,227 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 110 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 1318 [2018-10-24 11:49:35,231 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:35,791 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:35,827 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:35,828 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:112, output treesize:108 [2018-10-24 11:49:36,069 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 110 [2018-10-24 11:49:36,073 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-24 11:49:36,073 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,107 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,250 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,250 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:127, output treesize:111 [2018-10-24 11:49:36,282 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 110 [2018-10-24 11:49:36,286 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-24 11:49:36,286 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,327 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,367 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,368 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:119, output treesize:108 [2018-10-24 11:49:36,407 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 110 [2018-10-24 11:49:36,429 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-24 11:49:36,429 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,508 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,553 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,553 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:119, output treesize:108 [2018-10-24 11:49:36,580 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 110 [2018-10-24 11:49:36,593 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-24 11:49:36,594 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,645 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,695 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:36,696 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:119, output treesize:108 [2018-10-24 11:49:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-24 11:49:37,429 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:49:37,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 21] total 26 [2018-10-24 11:49:37,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-24 11:49:37,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-24 11:49:37,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2018-10-24 11:49:37,431 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand 26 states. [2018-10-24 11:49:41,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:41,824 INFO L93 Difference]: Finished difference Result 848 states and 993 transitions. [2018-10-24 11:49:41,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-24 11:49:41,827 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 66 [2018-10-24 11:49:41,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:41,830 INFO L225 Difference]: With dead ends: 848 [2018-10-24 11:49:41,830 INFO L226 Difference]: Without dead ends: 760 [2018-10-24 11:49:41,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=798, Invalid=1854, Unknown=0, NotChecked=0, Total=2652 [2018-10-24 11:49:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2018-10-24 11:49:41,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 156. [2018-10-24 11:49:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-24 11:49:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 178 transitions. [2018-10-24 11:49:41,861 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 178 transitions. Word has length 66 [2018-10-24 11:49:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:41,862 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 178 transitions. [2018-10-24 11:49:41,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-24 11:49:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 178 transitions. [2018-10-24 11:49:41,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-24 11:49:41,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:41,864 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:41,864 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:41,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:41,865 INFO L82 PathProgramCache]: Analyzing trace with hash -242068552, now seen corresponding path program 2 times [2018-10-24 11:49:41,865 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:41,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:41,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:41,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:41,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:42,571 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-10-24 11:49:42,805 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-10-24 11:49:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-10-24 11:49:42,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:42,809 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:42,816 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:49:42,899 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:49:42,899 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:49:42,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:43,026 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 16 treesize of output 12 [2018-10-24 11:49:43,028 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-24 11:49:43,028 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:43,029 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:43,030 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:43,030 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-10-24 11:49:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-10-24 11:49:43,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:49:43,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 16 [2018-10-24 11:49:43,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 11:49:43,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 11:49:43,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2018-10-24 11:49:43,077 INFO L87 Difference]: Start difference. First operand 156 states and 178 transitions. Second operand 16 states. [2018-10-24 11:49:44,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:44,028 INFO L93 Difference]: Finished difference Result 838 states and 989 transitions. [2018-10-24 11:49:44,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 11:49:44,028 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 72 [2018-10-24 11:49:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:44,032 INFO L225 Difference]: With dead ends: 838 [2018-10-24 11:49:44,032 INFO L226 Difference]: Without dead ends: 793 [2018-10-24 11:49:44,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2018-10-24 11:49:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2018-10-24 11:49:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 231. [2018-10-24 11:49:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-24 11:49:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 266 transitions. [2018-10-24 11:49:44,076 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 266 transitions. Word has length 72 [2018-10-24 11:49:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:44,077 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 266 transitions. [2018-10-24 11:49:44,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-24 11:49:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 266 transitions. [2018-10-24 11:49:44,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 11:49:44,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:44,079 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:44,080 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:44,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:44,080 INFO L82 PathProgramCache]: Analyzing trace with hash -832931461, now seen corresponding path program 1 times [2018-10-24 11:49:44,080 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:44,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:44,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:44,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:49:44,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:45,132 WARN L179 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 12 [2018-10-24 11:49:45,722 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 26 [2018-10-24 11:49:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 11:49:46,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:46,376 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:46,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:46,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:46,722 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:46,745 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:49:46,746 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 27 [2018-10-24 11:49:46,762 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2018-10-24 11:49:46,764 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-24 11:49:46,787 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-24 11:49:46,788 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:46,793 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:46,799 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:46,800 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:27, output treesize:4 [2018-10-24 11:49:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-24 11:49:46,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:49:46,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 25 [2018-10-24 11:49:46,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-24 11:49:46,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-24 11:49:46,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2018-10-24 11:49:46,951 INFO L87 Difference]: Start difference. First operand 231 states and 266 transitions. Second operand 25 states. [2018-10-24 11:49:49,432 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2018-10-24 11:49:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:50,014 INFO L93 Difference]: Finished difference Result 755 states and 887 transitions. [2018-10-24 11:49:50,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-24 11:49:50,015 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2018-10-24 11:49:50,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:50,018 INFO L225 Difference]: With dead ends: 755 [2018-10-24 11:49:50,018 INFO L226 Difference]: Without dead ends: 720 [2018-10-24 11:49:50,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=376, Invalid=1516, Unknown=0, NotChecked=0, Total=1892 [2018-10-24 11:49:50,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2018-10-24 11:49:50,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 462. [2018-10-24 11:49:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2018-10-24 11:49:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 531 transitions. [2018-10-24 11:49:50,083 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 531 transitions. Word has length 86 [2018-10-24 11:49:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:50,083 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 531 transitions. [2018-10-24 11:49:50,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-24 11:49:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 531 transitions. [2018-10-24 11:49:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 11:49:50,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:50,085 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:50,085 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:50,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:50,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1598928319, now seen corresponding path program 1 times [2018-10-24 11:49:50,086 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:50,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:50,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:50,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:50,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-10-24 11:49:50,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:50,675 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:50,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:50,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-24 11:49:50,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:49:50,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2018-10-24 11:49:50,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 11:49:50,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 11:49:50,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:49:50,820 INFO L87 Difference]: Start difference. First operand 462 states and 531 transitions. Second operand 9 states. [2018-10-24 11:49:51,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:51,225 INFO L93 Difference]: Finished difference Result 891 states and 1035 transitions. [2018-10-24 11:49:51,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 11:49:51,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2018-10-24 11:49:51,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:51,229 INFO L225 Difference]: With dead ends: 891 [2018-10-24 11:49:51,229 INFO L226 Difference]: Without dead ends: 887 [2018-10-24 11:49:51,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-10-24 11:49:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2018-10-24 11:49:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 664. [2018-10-24 11:49:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2018-10-24 11:49:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 765 transitions. [2018-10-24 11:49:51,354 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 765 transitions. Word has length 86 [2018-10-24 11:49:51,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:51,355 INFO L481 AbstractCegarLoop]: Abstraction has 664 states and 765 transitions. [2018-10-24 11:49:51,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 11:49:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 765 transitions. [2018-10-24 11:49:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 11:49:51,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:51,357 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:51,358 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:51,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:51,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1994974399, now seen corresponding path program 1 times [2018-10-24 11:49:51,358 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:51,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:51,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:51,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:51,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 11:49:52,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:52,746 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:52,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:52,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:53,015 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2018-10-24 11:49:53,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2018-10-24 11:49:53,022 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:53,041 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 11:49:53,041 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-10-24 11:49:53,042 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:53,058 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 11:49:53,059 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2018-10-24 11:49:53,060 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:53,071 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:53,078 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:53,078 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2018-10-24 11:49:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 31 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-24 11:49:53,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:49:53,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 21 [2018-10-24 11:49:53,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 11:49:53,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 11:49:53,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2018-10-24 11:49:53,128 INFO L87 Difference]: Start difference. First operand 664 states and 765 transitions. Second operand 21 states. [2018-10-24 11:49:54,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:54,377 INFO L93 Difference]: Finished difference Result 952 states and 1112 transitions. [2018-10-24 11:49:54,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 11:49:54,377 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 86 [2018-10-24 11:49:54,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:54,380 INFO L225 Difference]: With dead ends: 952 [2018-10-24 11:49:54,380 INFO L226 Difference]: Without dead ends: 868 [2018-10-24 11:49:54,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 78 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2018-10-24 11:49:54,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2018-10-24 11:49:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 693. [2018-10-24 11:49:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-10-24 11:49:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 795 transitions. [2018-10-24 11:49:54,506 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 795 transitions. Word has length 86 [2018-10-24 11:49:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:54,506 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 795 transitions. [2018-10-24 11:49:54,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-24 11:49:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 795 transitions. [2018-10-24 11:49:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 11:49:54,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:54,509 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:54,509 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:54,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:54,509 INFO L82 PathProgramCache]: Analyzing trace with hash -690855487, now seen corresponding path program 2 times [2018-10-24 11:49:54,509 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:54,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:54,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:54,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:54,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:55,344 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 10 [2018-10-24 11:49:55,586 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 30 [2018-10-24 11:49:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-24 11:49:55,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:55,993 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:56,001 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:49:56,093 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:49:56,093 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:49:56,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:56,229 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2018-10-24 11:49:56,232 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-24 11:49:56,232 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:49:56,262 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:56,284 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:49:56,285 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2018-10-24 11:49:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-24 11:49:56,382 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:49:56,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 17 [2018-10-24 11:49:56,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 11:49:56,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 11:49:56,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2018-10-24 11:49:56,383 INFO L87 Difference]: Start difference. First operand 693 states and 795 transitions. Second operand 17 states. [2018-10-24 11:49:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:56,924 INFO L93 Difference]: Finished difference Result 996 states and 1150 transitions. [2018-10-24 11:49:56,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 11:49:56,924 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 86 [2018-10-24 11:49:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:56,928 INFO L225 Difference]: With dead ends: 996 [2018-10-24 11:49:56,928 INFO L226 Difference]: Without dead ends: 876 [2018-10-24 11:49:56,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 80 SyntacticMatches, 12 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2018-10-24 11:49:56,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2018-10-24 11:49:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 693. [2018-10-24 11:49:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-10-24 11:49:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 789 transitions. [2018-10-24 11:49:57,051 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 789 transitions. Word has length 86 [2018-10-24 11:49:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:57,052 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 789 transitions. [2018-10-24 11:49:57,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 11:49:57,052 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 789 transitions. [2018-10-24 11:49:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 11:49:57,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:57,054 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:57,054 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:57,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:57,055 INFO L82 PathProgramCache]: Analyzing trace with hash -78331777, now seen corresponding path program 1 times [2018-10-24 11:49:57,055 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:57,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:57,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:57,056 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:49:57,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 11:49:57,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:57,538 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:57,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:57,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 11:49:57,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:49:57,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 13 [2018-10-24 11:49:57,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 11:49:57,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 11:49:57,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-10-24 11:49:57,699 INFO L87 Difference]: Start difference. First operand 693 states and 789 transitions. Second operand 13 states. [2018-10-24 11:49:59,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:49:59,135 INFO L93 Difference]: Finished difference Result 1765 states and 2050 transitions. [2018-10-24 11:49:59,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-24 11:49:59,135 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2018-10-24 11:49:59,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:49:59,141 INFO L225 Difference]: With dead ends: 1765 [2018-10-24 11:49:59,142 INFO L226 Difference]: Without dead ends: 1759 [2018-10-24 11:49:59,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2018-10-24 11:49:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2018-10-24 11:49:59,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 957. [2018-10-24 11:49:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2018-10-24 11:49:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1091 transitions. [2018-10-24 11:49:59,334 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1091 transitions. Word has length 86 [2018-10-24 11:49:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:49:59,334 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1091 transitions. [2018-10-24 11:49:59,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 11:49:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1091 transitions. [2018-10-24 11:49:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 11:49:59,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:49:59,337 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:49:59,338 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:49:59,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:49:59,338 INFO L82 PathProgramCache]: Analyzing trace with hash -158863787, now seen corresponding path program 1 times [2018-10-24 11:49:59,338 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:49:59,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:49:59,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:59,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:59,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:49:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-24 11:49:59,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:49:59,691 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:49:59,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:49:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:49:59,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:49:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 45 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-24 11:49:59,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:49:59,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 7 [2018-10-24 11:49:59,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 11:49:59,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 11:49:59,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:49:59,805 INFO L87 Difference]: Start difference. First operand 957 states and 1091 transitions. Second operand 7 states. [2018-10-24 11:50:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:50:00,213 INFO L93 Difference]: Finished difference Result 1720 states and 1974 transitions. [2018-10-24 11:50:00,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 11:50:00,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2018-10-24 11:50:00,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:50:00,216 INFO L225 Difference]: With dead ends: 1720 [2018-10-24 11:50:00,216 INFO L226 Difference]: Without dead ends: 888 [2018-10-24 11:50:00,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-10-24 11:50:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2018-10-24 11:50:00,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 630. [2018-10-24 11:50:00,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2018-10-24 11:50:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 694 transitions. [2018-10-24 11:50:00,351 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 694 transitions. Word has length 92 [2018-10-24 11:50:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:50:00,352 INFO L481 AbstractCegarLoop]: Abstraction has 630 states and 694 transitions. [2018-10-24 11:50:00,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 11:50:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 694 transitions. [2018-10-24 11:50:00,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-24 11:50:00,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:50:00,354 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:50:00,354 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:50:00,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:50:00,355 INFO L82 PathProgramCache]: Analyzing trace with hash 2072580793, now seen corresponding path program 3 times [2018-10-24 11:50:00,355 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:50:00,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:50:00,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:50:00,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:50:00,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:50:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:50:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-10-24 11:50:01,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:50:01,051 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:50:01,059 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 11:50:01,312 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-24 11:50:01,312 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:50:01,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:50:01,469 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 17 treesize of output 13 [2018-10-24 11:50:01,471 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 11:50:01,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-10-24 11:50:01,472 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:50:01,476 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:50:01,481 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 11:50:01,482 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:22, output treesize:11 [2018-10-24 11:50:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-10-24 11:50:01,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:50:01,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2018-10-24 11:50:01,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 11:50:01,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 11:50:01,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2018-10-24 11:50:01,535 INFO L87 Difference]: Start difference. First operand 630 states and 694 transitions. Second operand 17 states. [2018-10-24 11:50:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:50:03,520 INFO L93 Difference]: Finished difference Result 2735 states and 3004 transitions. [2018-10-24 11:50:03,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-24 11:50:03,520 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2018-10-24 11:50:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:50:03,527 INFO L225 Difference]: With dead ends: 2735 [2018-10-24 11:50:03,527 INFO L226 Difference]: Without dead ends: 2663 [2018-10-24 11:50:03,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=210, Invalid=1430, Unknown=0, NotChecked=0, Total=1640 [2018-10-24 11:50:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2018-10-24 11:50:03,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 609. [2018-10-24 11:50:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2018-10-24 11:50:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 669 transitions. [2018-10-24 11:50:03,642 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 669 transitions. Word has length 96 [2018-10-24 11:50:03,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:50:03,642 INFO L481 AbstractCegarLoop]: Abstraction has 609 states and 669 transitions. [2018-10-24 11:50:03,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 11:50:03,642 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 669 transitions. [2018-10-24 11:50:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 11:50:03,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:50:03,644 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:50:03,644 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:50:03,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:50:03,644 INFO L82 PathProgramCache]: Analyzing trace with hash 297096864, now seen corresponding path program 2 times [2018-10-24 11:50:03,645 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:50:03,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:50:03,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:50:03,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:50:03,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:50:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:50:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 11:50:04,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:50:04,190 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:50:04,197 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:50:04,307 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:50:04,307 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:50:04,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:50:04,406 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 17 treesize of output 13 [2018-10-24 11:50:04,408 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 11:50:04,408 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-10-24 11:50:04,408 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:50:04,411 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:50:04,417 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:50:04,417 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2018-10-24 11:50:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 41 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-10-24 11:50:04,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:50:04,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2018-10-24 11:50:04,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 11:50:04,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 11:50:04,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-24 11:50:04,461 INFO L87 Difference]: Start difference. First operand 609 states and 669 transitions. Second operand 14 states. [2018-10-24 11:50:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:50:04,975 INFO L93 Difference]: Finished difference Result 724 states and 788 transitions. [2018-10-24 11:50:04,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 11:50:04,975 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 104 [2018-10-24 11:50:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:50:04,977 INFO L225 Difference]: With dead ends: 724 [2018-10-24 11:50:04,977 INFO L226 Difference]: Without dead ends: 585 [2018-10-24 11:50:04,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2018-10-24 11:50:04,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2018-10-24 11:50:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 565. [2018-10-24 11:50:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2018-10-24 11:50:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 621 transitions. [2018-10-24 11:50:05,079 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 621 transitions. Word has length 104 [2018-10-24 11:50:05,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:50:05,080 INFO L481 AbstractCegarLoop]: Abstraction has 565 states and 621 transitions. [2018-10-24 11:50:05,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 11:50:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 621 transitions. [2018-10-24 11:50:05,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 11:50:05,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:50:05,082 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:50:05,082 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:50:05,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:50:05,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1629711969, now seen corresponding path program 3 times [2018-10-24 11:50:05,083 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:50:05,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:50:05,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:50:05,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:50:05,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:50:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:50:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-10-24 11:50:05,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:50:05,565 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:50:05,573 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 11:50:05,809 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-24 11:50:05,809 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:50:05,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:50:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 45 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 11:50:07,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:50:07,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2018-10-24 11:50:07,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 11:50:07,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 11:50:07,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=321, Unknown=3, NotChecked=0, Total=380 [2018-10-24 11:50:07,980 INFO L87 Difference]: Start difference. First operand 565 states and 621 transitions. Second operand 20 states. [2018-10-24 11:50:27,966 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 11:50:42,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:50:42,631 INFO L93 Difference]: Finished difference Result 3252 states and 3587 transitions. [2018-10-24 11:50:42,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-24 11:50:42,631 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 113 [2018-10-24 11:50:42,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:50:42,639 INFO L225 Difference]: With dead ends: 3252 [2018-10-24 11:50:42,640 INFO L226 Difference]: Without dead ends: 2959 [2018-10-24 11:50:42,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=213, Invalid=1578, Unknown=15, NotChecked=0, Total=1806 [2018-10-24 11:50:42,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2018-10-24 11:50:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 702. [2018-10-24 11:50:42,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2018-10-24 11:50:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 771 transitions. [2018-10-24 11:50:42,790 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 771 transitions. Word has length 113 [2018-10-24 11:50:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:50:42,790 INFO L481 AbstractCegarLoop]: Abstraction has 702 states and 771 transitions. [2018-10-24 11:50:42,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 11:50:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 771 transitions. [2018-10-24 11:50:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 11:50:42,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:50:42,792 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:50:42,792 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:50:42,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:50:42,793 INFO L82 PathProgramCache]: Analyzing trace with hash -156290083, now seen corresponding path program 4 times [2018-10-24 11:50:42,793 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:50:42,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:50:42,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:50:42,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:50:42,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:50:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:50:43,630 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-10-24 11:50:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 34 proven. 53 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 11:50:44,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:50:44,542 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:50:44,549 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 11:50:44,599 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 11:50:44,599 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:50:44,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:50:45,062 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2018-10-24 11:50:45,064 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2018-10-24 11:50:45,064 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:50:45,078 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 4 [2018-10-24 11:50:45,078 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 11:50:45,083 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:50:45,084 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:50:45,085 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:27, output treesize:4 [2018-10-24 11:50:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 36 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-24 11:50:45,148 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:50:45,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2018-10-24 11:50:45,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-24 11:50:45,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-24 11:50:45,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2018-10-24 11:50:45,149 INFO L87 Difference]: Start difference. First operand 702 states and 771 transitions. Second operand 29 states. [2018-10-24 11:50:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:50:50,070 INFO L93 Difference]: Finished difference Result 1460 states and 1598 transitions. [2018-10-24 11:50:50,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-24 11:50:50,071 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 124 [2018-10-24 11:50:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:50:50,074 INFO L225 Difference]: With dead ends: 1460 [2018-10-24 11:50:50,074 INFO L226 Difference]: Without dead ends: 1223 [2018-10-24 11:50:50,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 121 SyntacticMatches, 11 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1103, Invalid=5059, Unknown=0, NotChecked=0, Total=6162 [2018-10-24 11:50:50,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2018-10-24 11:50:50,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 944. [2018-10-24 11:50:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2018-10-24 11:50:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1026 transitions. [2018-10-24 11:50:50,351 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1026 transitions. Word has length 124 [2018-10-24 11:50:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:50:50,352 INFO L481 AbstractCegarLoop]: Abstraction has 944 states and 1026 transitions. [2018-10-24 11:50:50,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-24 11:50:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1026 transitions. [2018-10-24 11:50:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 11:50:50,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:50:50,354 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:50:50,355 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:50:50,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:50:50,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1744637985, now seen corresponding path program 5 times [2018-10-24 11:50:50,355 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:50:50,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:50:50,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:50:50,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:50:50,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:50:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:50:51,086 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 11:50:51,909 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 28 [2018-10-24 11:50:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 20 proven. 94 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-24 11:50:52,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:50:52,682 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:50:52,689 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 11:50:53,500 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-24 11:50:53,500 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:50:53,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:50:53,658 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-24 11:50:53,661 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-24 11:50:53,661 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:50:53,664 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:50:53,668 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:50:53,668 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2018-10-24 11:50:54,690 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:50:54,692 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:50:54,692 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 39 [2018-10-24 11:50:54,713 INFO L477 Elim1Store]: Elim1 applied some 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 2 case distinctions, treesize of input 28 treesize of output 37 [2018-10-24 11:50:54,715 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-10-24 11:50:54,731 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 11:50:54,732 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-10-24 11:50:54,732 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 11:50:54,739 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:50:54,745 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:50:54,746 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:49, output treesize:4 [2018-10-24 11:50:54,813 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 20 proven. 140 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-24 11:50:54,834 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:50:54,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 44 [2018-10-24 11:50:54,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-24 11:50:54,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-24 11:50:54,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1634, Unknown=0, NotChecked=0, Total=1892 [2018-10-24 11:50:54,836 INFO L87 Difference]: Start difference. First operand 944 states and 1026 transitions. Second operand 44 states. [2018-10-24 11:51:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:00,203 INFO L93 Difference]: Finished difference Result 3609 states and 3941 transitions. [2018-10-24 11:51:00,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-24 11:51:00,204 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 124 [2018-10-24 11:51:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:00,211 INFO L225 Difference]: With dead ends: 3609 [2018-10-24 11:51:00,211 INFO L226 Difference]: Without dead ends: 2932 [2018-10-24 11:51:00,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 98 SyntacticMatches, 15 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=824, Invalid=5028, Unknown=0, NotChecked=0, Total=5852 [2018-10-24 11:51:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2018-10-24 11:51:00,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1546. [2018-10-24 11:51:00,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2018-10-24 11:51:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 1681 transitions. [2018-10-24 11:51:00,532 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 1681 transitions. Word has length 124 [2018-10-24 11:51:00,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:00,532 INFO L481 AbstractCegarLoop]: Abstraction has 1546 states and 1681 transitions. [2018-10-24 11:51:00,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-24 11:51:00,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 1681 transitions. [2018-10-24 11:51:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 11:51:00,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:00,535 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:00,535 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:00,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:00,536 INFO L82 PathProgramCache]: Analyzing trace with hash -562493149, now seen corresponding path program 3 times [2018-10-24 11:51:00,536 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:00,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:00,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:00,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:51:00,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:01,261 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 11:51:01,464 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 11:51:01,881 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-24 11:51:03,400 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 20 proven. 94 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-24 11:51:03,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:03,400 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:51:03,407 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 11:51:03,650 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-24 11:51:03,650 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:51:03,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:07,626 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2018-10-24 11:51:07,635 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 12 [2018-10-24 11:51:07,635 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-24 11:51:07,660 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 11:51:07,675 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 2 xjuncts. [2018-10-24 11:51:07,676 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:41, output treesize:30 [2018-10-24 11:51:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 9 proven. 98 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 11:51:07,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:51:07,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20] total 38 [2018-10-24 11:51:07,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-24 11:51:07,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-24 11:51:07,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2018-10-24 11:51:07,951 INFO L87 Difference]: Start difference. First operand 1546 states and 1681 transitions. Second operand 38 states. [2018-10-24 11:51:08,993 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-10-24 11:51:12,552 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-24 11:51:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:16,020 INFO L93 Difference]: Finished difference Result 2248 states and 2425 transitions. [2018-10-24 11:51:16,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-24 11:51:16,020 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 124 [2018-10-24 11:51:16,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:16,026 INFO L225 Difference]: With dead ends: 2248 [2018-10-24 11:51:16,026 INFO L226 Difference]: Without dead ends: 2130 [2018-10-24 11:51:16,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 110 SyntacticMatches, 9 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3221 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1175, Invalid=9331, Unknown=0, NotChecked=0, Total=10506 [2018-10-24 11:51:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2018-10-24 11:51:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1583. [2018-10-24 11:51:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2018-10-24 11:51:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 1712 transitions. [2018-10-24 11:51:16,348 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 1712 transitions. Word has length 124 [2018-10-24 11:51:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:16,348 INFO L481 AbstractCegarLoop]: Abstraction has 1583 states and 1712 transitions. [2018-10-24 11:51:16,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-24 11:51:16,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 1712 transitions. [2018-10-24 11:51:16,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 11:51:16,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:16,351 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:16,352 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:16,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:16,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1084248157, now seen corresponding path program 4 times [2018-10-24 11:51:16,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:16,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:16,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:16,353 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:51:16,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-24 11:51:17,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:17,952 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:51:17,985 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 11:51:18,032 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 11:51:18,033 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:51:18,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:18,263 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2018-10-24 11:51:18,268 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 11:51:18,269 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2018-10-24 11:51:18,269 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:51:18,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2018-10-24 11:51:18,306 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 11:51:18,325 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 11:51:18,326 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2018-10-24 11:51:18,326 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 11:51:18,336 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:18,341 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:18,342 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2018-10-24 11:51:18,389 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 36 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-24 11:51:18,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:51:18,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 25 [2018-10-24 11:51:18,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-24 11:51:18,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-24 11:51:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2018-10-24 11:51:18,409 INFO L87 Difference]: Start difference. First operand 1583 states and 1712 transitions. Second operand 25 states. [2018-10-24 11:51:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:20,185 INFO L93 Difference]: Finished difference Result 1982 states and 2137 transitions. [2018-10-24 11:51:20,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 11:51:20,186 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 124 [2018-10-24 11:51:20,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:20,192 INFO L225 Difference]: With dead ends: 1982 [2018-10-24 11:51:20,192 INFO L226 Difference]: Without dead ends: 1730 [2018-10-24 11:51:20,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 115 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2018-10-24 11:51:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2018-10-24 11:51:20,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1452. [2018-10-24 11:51:20,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2018-10-24 11:51:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1565 transitions. [2018-10-24 11:51:20,693 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1565 transitions. Word has length 124 [2018-10-24 11:51:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:20,693 INFO L481 AbstractCegarLoop]: Abstraction has 1452 states and 1565 transitions. [2018-10-24 11:51:20,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-24 11:51:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1565 transitions. [2018-10-24 11:51:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 11:51:20,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:20,696 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:20,696 INFO L424 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:20,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:20,696 INFO L82 PathProgramCache]: Analyzing trace with hash 5122494, now seen corresponding path program 2 times [2018-10-24 11:51:20,697 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:20,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:20,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:20,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:51:20,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:21,698 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2018-10-24 11:51:21,755 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-10-24 11:51:21,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:21,755 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:51:21,763 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:51:21,862 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:51:21,862 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:51:21,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:22,195 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2018-10-24 11:51:22,198 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 15 [2018-10-24 11:51:22,199 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:51:22,210 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-24 11:51:22,210 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 11:51:22,216 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:22,218 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:22,218 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2018-10-24 11:51:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 20 proven. 107 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-24 11:51:22,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:51:22,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18] total 26 [2018-10-24 11:51:22,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-24 11:51:22,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-24 11:51:22,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2018-10-24 11:51:22,290 INFO L87 Difference]: Start difference. First operand 1452 states and 1565 transitions. Second operand 26 states. [2018-10-24 11:51:32,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:32,601 INFO L93 Difference]: Finished difference Result 3777 states and 4057 transitions. [2018-10-24 11:51:32,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-24 11:51:32,601 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 127 [2018-10-24 11:51:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:32,613 INFO L225 Difference]: With dead ends: 3777 [2018-10-24 11:51:32,613 INFO L226 Difference]: Without dead ends: 3292 [2018-10-24 11:51:32,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=811, Invalid=4889, Unknown=0, NotChecked=0, Total=5700 [2018-10-24 11:51:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2018-10-24 11:51:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 1392. [2018-10-24 11:51:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1392 states. [2018-10-24 11:51:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1503 transitions. [2018-10-24 11:51:32,914 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1503 transitions. Word has length 127 [2018-10-24 11:51:32,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:32,914 INFO L481 AbstractCegarLoop]: Abstraction has 1392 states and 1503 transitions. [2018-10-24 11:51:32,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-24 11:51:32,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1503 transitions. [2018-10-24 11:51:32,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 11:51:32,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:32,917 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:32,917 INFO L424 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:32,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:32,917 INFO L82 PathProgramCache]: Analyzing trace with hash -49126908, now seen corresponding path program 6 times [2018-10-24 11:51:32,917 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:32,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:32,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:32,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:51:32,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:33,599 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 11:51:33,821 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 11:51:34,603 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-24 11:51:35,596 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-10-24 11:51:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 79 proven. 86 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-24 11:51:35,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:35,665 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:51:35,672 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 11:51:36,295 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-10-24 11:51:36,295 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:51:36,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 79 proven. 94 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-24 11:51:36,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:51:36,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 26 [2018-10-24 11:51:36,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-24 11:51:36,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-24 11:51:36,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2018-10-24 11:51:36,561 INFO L87 Difference]: Start difference. First operand 1392 states and 1503 transitions. Second operand 26 states. [2018-10-24 11:51:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:38,010 INFO L93 Difference]: Finished difference Result 2046 states and 2207 transitions. [2018-10-24 11:51:38,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 11:51:38,010 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 142 [2018-10-24 11:51:38,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:38,015 INFO L225 Difference]: With dead ends: 2046 [2018-10-24 11:51:38,015 INFO L226 Difference]: Without dead ends: 1685 [2018-10-24 11:51:38,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 134 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2018-10-24 11:51:38,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2018-10-24 11:51:38,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1249. [2018-10-24 11:51:38,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2018-10-24 11:51:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1351 transitions. [2018-10-24 11:51:38,288 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1351 transitions. Word has length 142 [2018-10-24 11:51:38,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:38,289 INFO L481 AbstractCegarLoop]: Abstraction has 1249 states and 1351 transitions. [2018-10-24 11:51:38,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-24 11:51:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1351 transitions. [2018-10-24 11:51:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 11:51:38,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:38,290 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:38,290 INFO L424 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:38,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:38,291 INFO L82 PathProgramCache]: Analyzing trace with hash 110789382, now seen corresponding path program 5 times [2018-10-24 11:51:38,291 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:38,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:38,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:38,291 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:51:38,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:39,404 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-10-24 11:51:39,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:39,405 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:51:39,412 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 11:51:40,671 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-24 11:51:40,671 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:51:40,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:40,681 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-24 11:51:40,683 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-24 11:51:40,683 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:51:40,685 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:40,691 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:40,691 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2018-10-24 11:51:40,846 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 22 treesize of output 18 [2018-10-24 11:51:40,849 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 11:51:40,849 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-10-24 11:51:40,850 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:51:40,855 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:40,860 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:40,861 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:4 [2018-10-24 11:51:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 11:51:40,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:51:40,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 20 [2018-10-24 11:51:40,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 11:51:40,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 11:51:40,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2018-10-24 11:51:40,934 INFO L87 Difference]: Start difference. First operand 1249 states and 1351 transitions. Second operand 20 states. [2018-10-24 11:51:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:42,060 INFO L93 Difference]: Finished difference Result 1685 states and 1833 transitions. [2018-10-24 11:51:42,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 11:51:42,061 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 144 [2018-10-24 11:51:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:42,067 INFO L225 Difference]: With dead ends: 1685 [2018-10-24 11:51:42,067 INFO L226 Difference]: Without dead ends: 1681 [2018-10-24 11:51:42,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2018-10-24 11:51:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2018-10-24 11:51:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1282. [2018-10-24 11:51:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2018-10-24 11:51:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1384 transitions. [2018-10-24 11:51:42,381 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1384 transitions. Word has length 144 [2018-10-24 11:51:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:42,382 INFO L481 AbstractCegarLoop]: Abstraction has 1282 states and 1384 transitions. [2018-10-24 11:51:42,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 11:51:42,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1384 transitions. [2018-10-24 11:51:42,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 11:51:42,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:42,383 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:42,383 INFO L424 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:42,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:42,384 INFO L82 PathProgramCache]: Analyzing trace with hash -453745213, now seen corresponding path program 7 times [2018-10-24 11:51:42,384 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:42,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:42,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:42,385 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:51:42,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-10-24 11:51:43,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:43,219 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:51:43,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:51:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:43,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:43,536 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 16 treesize of output 12 [2018-10-24 11:51:43,537 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-24 11:51:43,537 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:51:43,538 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:43,539 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:43,539 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-10-24 11:51:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-24 11:51:43,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:51:43,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 27 [2018-10-24 11:51:43,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-24 11:51:43,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-24 11:51:43,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2018-10-24 11:51:43,633 INFO L87 Difference]: Start difference. First operand 1282 states and 1384 transitions. Second operand 27 states. [2018-10-24 11:51:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:48,687 INFO L93 Difference]: Finished difference Result 10015 states and 11007 transitions. [2018-10-24 11:51:48,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-24 11:51:48,687 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 151 [2018-10-24 11:51:48,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:48,703 INFO L225 Difference]: With dead ends: 10015 [2018-10-24 11:51:48,703 INFO L226 Difference]: Without dead ends: 9435 [2018-10-24 11:51:48,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=271, Invalid=2179, Unknown=0, NotChecked=0, Total=2450 [2018-10-24 11:51:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9435 states. [2018-10-24 11:51:49,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9435 to 2682. [2018-10-24 11:51:49,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2682 states. [2018-10-24 11:51:49,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 2901 transitions. [2018-10-24 11:51:49,464 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 2901 transitions. Word has length 151 [2018-10-24 11:51:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:49,465 INFO L481 AbstractCegarLoop]: Abstraction has 2682 states and 2901 transitions. [2018-10-24 11:51:49,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-24 11:51:49,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 2901 transitions. [2018-10-24 11:51:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-24 11:51:49,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:49,468 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:49,468 INFO L424 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:49,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1522775769, now seen corresponding path program 8 times [2018-10-24 11:51:49,469 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:49,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:49,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:49,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:51:49,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:50,205 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 11:51:50,436 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 11:51:50,939 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 10 [2018-10-24 11:51:51,434 WARN L179 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 12 [2018-10-24 11:51:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 66 proven. 207 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 11:51:56,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:56,005 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:51:56,012 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:51:56,141 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:51:56,141 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:51:56,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:56,492 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2018-10-24 11:51:56,495 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2018-10-24 11:51:56,496 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:51:56,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 9 [2018-10-24 11:51:56,508 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 11:51:56,522 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 4 [2018-10-24 11:51:56,522 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 11:51:56,533 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:56,534 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:51:56,534 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:27, output treesize:4 [2018-10-24 11:51:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 62 proven. 232 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-24 11:51:56,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:51:56,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19] total 36 [2018-10-24 11:51:56,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-24 11:51:56,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-24 11:51:56,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1085, Unknown=1, NotChecked=0, Total=1260 [2018-10-24 11:51:56,635 INFO L87 Difference]: Start difference. First operand 2682 states and 2901 transitions. Second operand 36 states. [2018-10-24 11:51:58,605 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2018-10-24 11:52:01,681 WARN L179 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2018-10-24 11:52:39,396 WARN L179 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-24 11:53:33,693 WARN L179 SmtUtils]: Spent 6.06 s on a formula simplification. DAG size of input: 49 DAG size of output: 46 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown