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/eca-rers2012/Problem12_label52_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:01:30,490 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:01:30,492 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:01:30,504 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:01:30,505 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:01:30,506 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:01:30,507 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:01:30,509 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:01:30,511 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:01:30,512 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:01:30,513 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:01:30,513 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:01:30,514 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:01:30,515 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:01:30,516 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:01:30,517 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:01:30,518 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:01:30,520 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:01:30,522 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:01:30,524 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:01:30,525 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:01:30,527 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:01:30,529 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:01:30,530 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:01:30,530 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:01:30,531 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:01:30,532 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:01:30,533 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:01:30,534 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:01:30,535 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:01:30,535 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:01:30,536 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:01:30,547 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 [2018-10-23 18:01:30,565 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:01:30,565 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:01:30,566 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:01:30,566 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:01:30,567 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:01:30,567 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:01:30,567 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:01:30,567 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:01:30,567 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:01:30,568 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:01:30,568 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:01:30,568 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:01:30,568 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:01:30,568 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:01:30,569 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:01:30,569 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:01:30,569 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:01:30,569 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:01:30,570 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:01:30,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:01:30,570 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:01:30,570 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:01:30,570 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:01:30,571 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:01:30,571 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:01:30,571 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:01:30,571 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:01:30,571 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:01:30,624 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:01:30,642 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:01:30,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:01:30,647 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:01:30,647 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:01:30,648 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label52_false-unreach-call.c [2018-10-23 18:01:30,704 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff54e4722/bd655b0eb43d41b9869cb977d2eb5dbf/FLAGc4758f00e [2018-10-23 18:01:31,460 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:01:31,461 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label52_false-unreach-call.c [2018-10-23 18:01:31,494 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff54e4722/bd655b0eb43d41b9869cb977d2eb5dbf/FLAGc4758f00e [2018-10-23 18:01:31,515 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff54e4722/bd655b0eb43d41b9869cb977d2eb5dbf [2018-10-23 18:01:31,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:01:31,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:01:31,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:01:31,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:01:31,535 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:01:31,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:01:31" (1/1) ... [2018-10-23 18:01:31,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e73541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:31, skipping insertion in model container [2018-10-23 18:01:31,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:01:31" (1/1) ... [2018-10-23 18:01:31,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:01:31,698 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:01:32,981 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:01:32,986 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:01:33,678 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:01:33,710 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:01:33,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33 WrapperNode [2018-10-23 18:01:33,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:01:33,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:01:33,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:01:33,712 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:01:33,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33" (1/1) ... [2018-10-23 18:01:33,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33" (1/1) ... [2018-10-23 18:01:34,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:01:34,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:01:34,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:01:34,328 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:01:34,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33" (1/1) ... [2018-10-23 18:01:34,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33" (1/1) ... [2018-10-23 18:01:34,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33" (1/1) ... [2018-10-23 18:01:34,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33" (1/1) ... [2018-10-23 18:01:34,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33" (1/1) ... [2018-10-23 18:01:34,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33" (1/1) ... [2018-10-23 18:01:34,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33" (1/1) ... [2018-10-23 18:01:34,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:01:34,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:01:34,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:01:34,804 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:01:34,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33" (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 [2018-10-23 18:01:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:01:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:01:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:01:43,481 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:01:43,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:01:43 BoogieIcfgContainer [2018-10-23 18:01:43,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:01:43,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:01:43,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:01:43,487 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:01:43,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:01:31" (1/3) ... [2018-10-23 18:01:43,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5954ac29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:01:43, skipping insertion in model container [2018-10-23 18:01:43,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:33" (2/3) ... [2018-10-23 18:01:43,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5954ac29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:01:43, skipping insertion in model container [2018-10-23 18:01:43,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:01:43" (3/3) ... [2018-10-23 18:01:43,493 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label52_false-unreach-call.c [2018-10-23 18:01:43,501 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:01:43,510 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:01:43,525 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:01:43,575 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:01:43,576 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:01:43,576 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:01:43,576 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:01:43,576 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:01:43,577 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:01:43,577 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:01:43,577 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:01:43,577 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:01:43,614 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 18:01:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-23 18:01:43,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:01:43,624 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] [2018-10-23 18:01:43,626 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:01:43,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:01:43,637 INFO L82 PathProgramCache]: Analyzing trace with hash -692138422, now seen corresponding path program 1 times [2018-10-23 18:01:43,639 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:01:43,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:01:43,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:43,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:43,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:01:44,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:01:44,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:01:44,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:01:44,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:01:44,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:44,156 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-23 18:01:59,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:01:59,939 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-23 18:01:59,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:01:59,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-10-23 18:01:59,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:01:59,981 INFO L225 Difference]: With dead ends: 3146 [2018-10-23 18:01:59,981 INFO L226 Difference]: Without dead ends: 2320 [2018-10-23 18:01:59,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-23 18:02:00,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-23 18:02:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-23 18:02:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4229 transitions. [2018-10-23 18:02:00,149 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4229 transitions. Word has length 31 [2018-10-23 18:02:00,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:00,150 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4229 transitions. [2018-10-23 18:02:00,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:02:00,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4229 transitions. [2018-10-23 18:02:00,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-23 18:02:00,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:00,156 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:02:00,156 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:00,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:00,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1262000804, now seen corresponding path program 1 times [2018-10-23 18:02:00,157 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:00,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:00,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:00,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:00,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:02:00,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:00,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:02:00,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:02:00,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:02:00,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:00,498 INFO L87 Difference]: Start difference. First operand 2320 states and 4229 transitions. Second operand 4 states. [2018-10-23 18:02:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:11,159 INFO L93 Difference]: Finished difference Result 9150 states and 16788 transitions. [2018-10-23 18:02:11,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:02:11,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2018-10-23 18:02:11,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:11,194 INFO L225 Difference]: With dead ends: 9150 [2018-10-23 18:02:11,195 INFO L226 Difference]: Without dead ends: 6832 [2018-10-23 18:02:11,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:11,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-23 18:02:11,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-23 18:02:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-23 18:02:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10629 transitions. [2018-10-23 18:02:11,327 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10629 transitions. Word has length 107 [2018-10-23 18:02:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:11,328 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 10629 transitions. [2018-10-23 18:02:11,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:02:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10629 transitions. [2018-10-23 18:02:11,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-23 18:02:11,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:11,332 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-10-23 18:02:11,332 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:11,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:11,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1551836813, now seen corresponding path program 1 times [2018-10-23 18:02:11,333 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:11,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:11,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:11,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:11,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:02:11,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:11,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:02:11,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:02:11,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:02:11,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:11,559 INFO L87 Difference]: Start difference. First operand 6832 states and 10629 transitions. Second operand 4 states. [2018-10-23 18:02:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:19,452 INFO L93 Difference]: Finished difference Result 27260 states and 42449 transitions. [2018-10-23 18:02:19,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:02:19,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-10-23 18:02:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:19,539 INFO L225 Difference]: With dead ends: 27260 [2018-10-23 18:02:19,539 INFO L226 Difference]: Without dead ends: 20430 [2018-10-23 18:02:19,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:19,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20430 states. [2018-10-23 18:02:19,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20430 to 13600. [2018-10-23 18:02:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13600 states. [2018-10-23 18:02:19,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 19341 transitions. [2018-10-23 18:02:19,869 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 19341 transitions. Word has length 113 [2018-10-23 18:02:19,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:19,869 INFO L481 AbstractCegarLoop]: Abstraction has 13600 states and 19341 transitions. [2018-10-23 18:02:19,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:02:19,869 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 19341 transitions. [2018-10-23 18:02:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-23 18:02:19,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:19,872 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1] [2018-10-23 18:02:19,872 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:19,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:19,873 INFO L82 PathProgramCache]: Analyzing trace with hash 311184864, now seen corresponding path program 1 times [2018-10-23 18:02:19,873 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:19,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:19,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:19,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:19,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:02:20,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:20,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:02:20,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:02:20,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:02:20,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:20,168 INFO L87 Difference]: Start difference. First operand 13600 states and 19341 transitions. Second operand 4 states. [2018-10-23 18:02:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:32,021 INFO L93 Difference]: Finished difference Result 52782 states and 74748 transitions. [2018-10-23 18:02:32,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:02:32,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2018-10-23 18:02:32,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:32,092 INFO L225 Difference]: With dead ends: 52782 [2018-10-23 18:02:32,092 INFO L226 Difference]: Without dead ends: 39184 [2018-10-23 18:02:32,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:32,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39184 states. [2018-10-23 18:02:32,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39184 to 26384. [2018-10-23 18:02:32,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26384 states. [2018-10-23 18:02:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 33902 transitions. [2018-10-23 18:02:32,530 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 33902 transitions. Word has length 131 [2018-10-23 18:02:32,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:32,531 INFO L481 AbstractCegarLoop]: Abstraction has 26384 states and 33902 transitions. [2018-10-23 18:02:32,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:02:32,531 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 33902 transitions. [2018-10-23 18:02:32,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-23 18:02:32,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:32,534 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:02:32,534 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:32,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:32,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1367918199, now seen corresponding path program 1 times [2018-10-23 18:02:32,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:32,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:32,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:32,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:32,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:32,841 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 18:02:33,031 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-23 18:02:33,308 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-23 18:02:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-23 18:02:33,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:02:33,371 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 [2018-10-23 18:02:33,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:33,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:02:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-23 18:02:33,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:02:33,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2018-10-23 18:02:33,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:02:33,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:02:33,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:02:33,593 INFO L87 Difference]: Start difference. First operand 26384 states and 33902 transitions. Second operand 8 states. [2018-10-23 18:02:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:53,054 INFO L93 Difference]: Finished difference Result 100144 states and 128565 transitions. [2018-10-23 18:02:53,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 18:02:53,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2018-10-23 18:02:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:53,177 INFO L225 Difference]: With dead ends: 100144 [2018-10-23 18:02:53,178 INFO L226 Difference]: Without dead ends: 73762 [2018-10-23 18:02:53,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-10-23 18:02:53,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73762 states. [2018-10-23 18:02:54,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73762 to 70752. [2018-10-23 18:02:54,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70752 states. [2018-10-23 18:02:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70752 states to 70752 states and 86216 transitions. [2018-10-23 18:02:54,091 INFO L78 Accepts]: Start accepts. Automaton has 70752 states and 86216 transitions. Word has length 173 [2018-10-23 18:02:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:54,091 INFO L481 AbstractCegarLoop]: Abstraction has 70752 states and 86216 transitions. [2018-10-23 18:02:54,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 18:02:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 70752 states and 86216 transitions. [2018-10-23 18:02:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-23 18:02:54,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:54,102 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2018-10-23 18:02:54,102 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:54,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:54,103 INFO L82 PathProgramCache]: Analyzing trace with hash -494094147, now seen corresponding path program 1 times [2018-10-23 18:02:54,103 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:54,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:54,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:54,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:54,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:02:54,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:54,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:02:54,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:02:54,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:02:54,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:54,625 INFO L87 Difference]: Start difference. First operand 70752 states and 86216 transitions. Second operand 4 states. [2018-10-23 18:03:06,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:06,947 INFO L93 Difference]: Finished difference Result 143006 states and 174099 transitions. [2018-10-23 18:03:06,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:03:06,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 285 [2018-10-23 18:03:06,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:07,039 INFO L225 Difference]: With dead ends: 143006 [2018-10-23 18:03:07,039 INFO L226 Difference]: Without dead ends: 73008 [2018-10-23 18:03:07,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:03:07,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73008 states. [2018-10-23 18:03:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73008 to 71504. [2018-10-23 18:03:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71504 states. [2018-10-23 18:03:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71504 states to 71504 states and 84977 transitions. [2018-10-23 18:03:07,780 INFO L78 Accepts]: Start accepts. Automaton has 71504 states and 84977 transitions. Word has length 285 [2018-10-23 18:03:07,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:07,781 INFO L481 AbstractCegarLoop]: Abstraction has 71504 states and 84977 transitions. [2018-10-23 18:03:07,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:03:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 71504 states and 84977 transitions. [2018-10-23 18:03:07,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-23 18:03:07,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:07,791 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2018-10-23 18:03:07,792 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:07,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:07,792 INFO L82 PathProgramCache]: Analyzing trace with hash 531043655, now seen corresponding path program 1 times [2018-10-23 18:03:07,792 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:07,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:07,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:07,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:07,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-10-23 18:03:08,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:03:08,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:03:08,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:03:08,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:03:08,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:03:08,045 INFO L87 Difference]: Start difference. First operand 71504 states and 84977 transitions. Second operand 4 states. [2018-10-23 18:03:18,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:18,186 INFO L93 Difference]: Finished difference Result 143006 states and 170021 transitions. [2018-10-23 18:03:18,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:03:18,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 289 [2018-10-23 18:03:18,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:18,268 INFO L225 Difference]: With dead ends: 143006 [2018-10-23 18:03:18,268 INFO L226 Difference]: Without dead ends: 72256 [2018-10-23 18:03:18,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:03:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72256 states. [2018-10-23 18:03:18,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72256 to 70000. [2018-10-23 18:03:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70000 states. [2018-10-23 18:03:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70000 states to 70000 states and 77595 transitions. [2018-10-23 18:03:18,931 INFO L78 Accepts]: Start accepts. Automaton has 70000 states and 77595 transitions. Word has length 289 [2018-10-23 18:03:18,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:18,931 INFO L481 AbstractCegarLoop]: Abstraction has 70000 states and 77595 transitions. [2018-10-23 18:03:18,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:03:18,931 INFO L276 IsEmpty]: Start isEmpty. Operand 70000 states and 77595 transitions. [2018-10-23 18:03:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-23 18:03:18,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:18,939 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2018-10-23 18:03:18,940 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:18,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:18,940 INFO L82 PathProgramCache]: Analyzing trace with hash 775536557, now seen corresponding path program 1 times [2018-10-23 18:03:18,940 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:18,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:18,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:18,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:18,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 229 proven. 5 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-23 18:03:19,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:03:19,281 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 [2018-10-23 18:03:19,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:19,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:03:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-23 18:03:19,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:03:19,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 18:03:19,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:03:19,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:03:19,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:03:19,541 INFO L87 Difference]: Start difference. First operand 70000 states and 77595 transitions. Second operand 7 states. [2018-10-23 18:03:39,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:39,606 INFO L93 Difference]: Finished difference Result 167092 states and 184153 transitions. [2018-10-23 18:03:39,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 18:03:39,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2018-10-23 18:03:39,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:39,714 INFO L225 Difference]: With dead ends: 167092 [2018-10-23 18:03:39,714 INFO L226 Difference]: Without dead ends: 95587 [2018-10-23 18:03:39,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 291 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:03:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95587 states. [2018-10-23 18:03:40,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95587 to 72255. [2018-10-23 18:03:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72255 states. [2018-10-23 18:03:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72255 states to 72255 states and 76465 transitions. [2018-10-23 18:03:40,330 INFO L78 Accepts]: Start accepts. Automaton has 72255 states and 76465 transitions. Word has length 290 [2018-10-23 18:03:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:40,330 INFO L481 AbstractCegarLoop]: Abstraction has 72255 states and 76465 transitions. [2018-10-23 18:03:40,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:03:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 72255 states and 76465 transitions. [2018-10-23 18:03:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2018-10-23 18:03:40,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:40,390 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2018-10-23 18:03:40,390 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:40,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:40,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1382165509, now seen corresponding path program 1 times [2018-10-23 18:03:40,391 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:40,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:40,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:40,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:40,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-10-23 18:03:41,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:03:41,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:03:41,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:03:41,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:03:41,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:03:41,470 INFO L87 Difference]: Start difference. First operand 72255 states and 76465 transitions. Second operand 3 states. [2018-10-23 18:03:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:47,948 INFO L93 Difference]: Finished difference Result 155034 states and 164861 transitions. [2018-10-23 18:03:47,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:03:47,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1001 [2018-10-23 18:03:47,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:48,032 INFO L225 Difference]: With dead ends: 155034 [2018-10-23 18:03:48,032 INFO L226 Difference]: Without dead ends: 83533 [2018-10-23 18:03:48,066 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 [2018-10-23 18:03:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83533 states. [2018-10-23 18:03:48,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83533 to 83533. [2018-10-23 18:03:48,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83533 states. [2018-10-23 18:03:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83533 states to 83533 states and 88770 transitions. [2018-10-23 18:03:48,674 INFO L78 Accepts]: Start accepts. Automaton has 83533 states and 88770 transitions. Word has length 1001 [2018-10-23 18:03:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:48,675 INFO L481 AbstractCegarLoop]: Abstraction has 83533 states and 88770 transitions. [2018-10-23 18:03:48,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:03:48,675 INFO L276 IsEmpty]: Start isEmpty. Operand 83533 states and 88770 transitions. [2018-10-23 18:03:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2018-10-23 18:03:48,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:48,725 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1] [2018-10-23 18:03:48,725 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:48,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:48,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1263413918, now seen corresponding path program 1 times [2018-10-23 18:03:48,726 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:48,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:48,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:48,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:48,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-23 18:03:50,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:03:50,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:03:50,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:03:50,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:03:50,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:03:50,013 INFO L87 Difference]: Start difference. First operand 83533 states and 88770 transitions. Second operand 4 states. [2018-10-23 18:03:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:58,455 INFO L93 Difference]: Finished difference Result 167063 states and 177544 transitions. [2018-10-23 18:03:58,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:03:58,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1010 [2018-10-23 18:03:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:58,532 INFO L225 Difference]: With dead ends: 167063 [2018-10-23 18:03:58,532 INFO L226 Difference]: Without dead ends: 80516 [2018-10-23 18:03:58,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:03:58,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80516 states. [2018-10-23 18:03:59,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80516 to 76004. [2018-10-23 18:03:59,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76004 states. [2018-10-23 18:03:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76004 states to 76004 states and 78759 transitions. [2018-10-23 18:03:59,137 INFO L78 Accepts]: Start accepts. Automaton has 76004 states and 78759 transitions. Word has length 1010 [2018-10-23 18:03:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:59,138 INFO L481 AbstractCegarLoop]: Abstraction has 76004 states and 78759 transitions. [2018-10-23 18:03:59,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:03:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand 76004 states and 78759 transitions. [2018-10-23 18:03:59,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2018-10-23 18:03:59,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:59,184 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:03:59,185 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:59,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:59,185 INFO L82 PathProgramCache]: Analyzing trace with hash 631280039, now seen corresponding path program 1 times [2018-10-23 18:03:59,185 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:59,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:59,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:59,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:59,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:00,175 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 18:04:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-23 18:04:01,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:04:01,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:04:01,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:04:01,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:04:01,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:04:01,199 INFO L87 Difference]: Start difference. First operand 76004 states and 78759 transitions. Second operand 4 states. [2018-10-23 18:04:08,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:04:08,044 INFO L93 Difference]: Finished difference Result 155766 states and 161362 transitions. [2018-10-23 18:04:08,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:04:08,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1036 [2018-10-23 18:04:08,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:04:08,144 INFO L225 Difference]: With dead ends: 155766 [2018-10-23 18:04:08,145 INFO L226 Difference]: Without dead ends: 80516 [2018-10-23 18:04:08,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:04:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80516 states. [2018-10-23 18:04:09,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80516 to 76004. [2018-10-23 18:04:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76004 states. [2018-10-23 18:04:09,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76004 states to 76004 states and 78523 transitions. [2018-10-23 18:04:09,384 INFO L78 Accepts]: Start accepts. Automaton has 76004 states and 78523 transitions. Word has length 1036 [2018-10-23 18:04:09,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:04:09,385 INFO L481 AbstractCegarLoop]: Abstraction has 76004 states and 78523 transitions. [2018-10-23 18:04:09,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:04:09,386 INFO L276 IsEmpty]: Start isEmpty. Operand 76004 states and 78523 transitions. [2018-10-23 18:04:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2018-10-23 18:04:09,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:04:09,438 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1] [2018-10-23 18:04:09,438 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:04:09,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:04:09,439 INFO L82 PathProgramCache]: Analyzing trace with hash -2065705667, now seen corresponding path program 1 times [2018-10-23 18:04:09,439 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:04:09,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:04:09,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:09,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:09,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:10,526 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-23 18:04:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 517 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 18:04:11,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:04:11,486 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 [2018-10-23 18:04:11,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:11,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:04:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 517 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 18:04:13,093 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:04:13,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-23 18:04:13,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:04:13,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:04:13,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:04:13,095 INFO L87 Difference]: Start difference. First operand 76004 states and 78523 transitions. Second operand 6 states. [2018-10-23 18:04:31,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:04:31,362 INFO L93 Difference]: Finished difference Result 200141 states and 207083 transitions. [2018-10-23 18:04:31,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:04:31,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1048 [2018-10-23 18:04:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:04:31,487 INFO L225 Difference]: With dead ends: 200141 [2018-10-23 18:04:31,487 INFO L226 Difference]: Without dead ends: 124138 [2018-10-23 18:04:31,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1049 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:04:31,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124138 states. [2018-10-23 18:04:32,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124138 to 106083. [2018-10-23 18:04:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106083 states. [2018-10-23 18:04:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106083 states to 106083 states and 109198 transitions. [2018-10-23 18:04:32,845 INFO L78 Accepts]: Start accepts. Automaton has 106083 states and 109198 transitions. Word has length 1048 [2018-10-23 18:04:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:04:32,846 INFO L481 AbstractCegarLoop]: Abstraction has 106083 states and 109198 transitions. [2018-10-23 18:04:32,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:04:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 106083 states and 109198 transitions. [2018-10-23 18:04:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2018-10-23 18:04:32,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:04:32,896 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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] [2018-10-23 18:04:32,896 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:04:32,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:04:32,897 INFO L82 PathProgramCache]: Analyzing trace with hash 752005048, now seen corresponding path program 1 times [2018-10-23 18:04:32,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:04:32,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:04:32,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:32,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:32,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2018-10-23 18:04:34,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:04:34,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:04:34,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:04:34,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:04:34,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:04:34,023 INFO L87 Difference]: Start difference. First operand 106083 states and 109198 transitions. Second operand 3 states. [2018-10-23 18:04:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:04:40,650 INFO L93 Difference]: Finished difference Result 239988 states and 247281 transitions. [2018-10-23 18:04:40,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:04:40,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1130 [2018-10-23 18:04:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:04:40,768 INFO L225 Difference]: With dead ends: 239988 [2018-10-23 18:04:40,769 INFO L226 Difference]: Without dead ends: 133906 [2018-10-23 18:04:40,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:04:40,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133906 states. [2018-10-23 18:04:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133906 to 130146. [2018-10-23 18:04:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130146 states. [2018-10-23 18:04:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130146 states to 130146 states and 133958 transitions. [2018-10-23 18:04:41,740 INFO L78 Accepts]: Start accepts. Automaton has 130146 states and 133958 transitions. Word has length 1130 [2018-10-23 18:04:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:04:41,741 INFO L481 AbstractCegarLoop]: Abstraction has 130146 states and 133958 transitions. [2018-10-23 18:04:41,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:04:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 130146 states and 133958 transitions. [2018-10-23 18:04:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2018-10-23 18:04:41,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:04:41,816 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2018-10-23 18:04:41,817 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:04:41,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:04:41,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1458799035, now seen corresponding path program 1 times [2018-10-23 18:04:41,818 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:04:41,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:04:41,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:41,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:41,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 1262 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-10-23 18:04:43,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:04:43,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:04:43,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:04:43,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:04:43,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:04:43,266 INFO L87 Difference]: Start difference. First operand 130146 states and 133958 transitions. Second operand 4 states. [2018-10-23 18:04:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:04:54,351 INFO L93 Difference]: Finished difference Result 304657 states and 314465 transitions. [2018-10-23 18:04:54,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:04:54,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1365 [2018-10-23 18:04:54,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:04:54,519 INFO L225 Difference]: With dead ends: 304657 [2018-10-23 18:04:54,519 INFO L226 Difference]: Without dead ends: 175265 [2018-10-23 18:04:54,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:04:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175265 states. [2018-10-23 18:04:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175265 to 170753. [2018-10-23 18:04:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170753 states. [2018-10-23 18:04:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170753 states to 170753 states and 175373 transitions. [2018-10-23 18:04:56,594 INFO L78 Accepts]: Start accepts. Automaton has 170753 states and 175373 transitions. Word has length 1365 [2018-10-23 18:04:56,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:04:56,595 INFO L481 AbstractCegarLoop]: Abstraction has 170753 states and 175373 transitions. [2018-10-23 18:04:56,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:04:56,595 INFO L276 IsEmpty]: Start isEmpty. Operand 170753 states and 175373 transitions. [2018-10-23 18:04:56,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1424 [2018-10-23 18:04:56,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:04:56,700 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:04:56,700 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:04:56,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:04:56,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2146172628, now seen corresponding path program 1 times [2018-10-23 18:04:56,701 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:04:56,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:04:56,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:56,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:56,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:58,305 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-10-23 18:05:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 911 proven. 262 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-23 18:05:01,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:05:01,134 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 [2018-10-23 18:05:01,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:01,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:05:04,582 WARN L179 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 160 DAG size of output: 31 [2018-10-23 18:05:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 1056 proven. 117 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-23 18:05:11,415 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:05:11,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-23 18:05:11,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:05:11,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:05:11,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:05:11,418 INFO L87 Difference]: Start difference. First operand 170753 states and 175373 transitions. Second operand 8 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown