java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:11:08,414 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:11:08,418 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:11:08,436 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:11:08,437 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:11:08,438 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:11:08,439 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:11:08,441 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:11:08,442 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:11:08,443 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:11:08,444 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:11:08,444 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:11:08,445 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:11:08,447 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:11:08,448 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:11:08,449 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:11:08,449 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:11:08,451 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:11:08,453 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:11:08,455 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:11:08,456 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:11:08,457 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:11:08,460 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:11:08,460 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:11:08,461 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:11:08,461 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:11:08,462 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:11:08,463 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:11:08,464 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:11:08,465 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:11:08,466 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:11:08,466 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:11:08,469 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:11:08,487 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:11:08,487 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:11:08,488 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:11:08,488 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:11:08,489 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:11:08,489 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:11:08,489 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:11:08,490 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:11:08,490 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:11:08,490 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:11:08,490 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:11:08,490 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:11:08,491 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:11:08,491 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:11:08,491 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:11:08,491 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:11:08,491 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:11:08,491 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:11:08,492 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:11:08,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:11:08,492 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:11:08,492 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:11:08,493 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:11:08,493 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:11:08,493 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:11:08,493 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:11:08,493 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:11:08,493 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:11:08,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:11:08,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:11:08,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:11:08,559 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:11:08,560 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:11:08,561 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-11-06 21:11:08,625 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d1fc7bc5/b23e6943c8be48ae95676b6b07a688a7/FLAG18fd0aafe [2018-11-06 21:11:09,493 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:11:09,494 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-11-06 21:11:09,541 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d1fc7bc5/b23e6943c8be48ae95676b6b07a688a7/FLAG18fd0aafe [2018-11-06 21:11:09,566 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d1fc7bc5/b23e6943c8be48ae95676b6b07a688a7 [2018-11-06 21:11:09,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:11:09,582 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:11:09,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:11:09,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:11:09,590 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:11:09,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:11:09" (1/1) ... [2018-11-06 21:11:09,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269019d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:09, skipping insertion in model container [2018-11-06 21:11:09,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:11:09" (1/1) ... [2018-11-06 21:11:09,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:11:09,780 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:11:11,141 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:11:11,146 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:11:11,695 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:11:11,730 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:11:11,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11 WrapperNode [2018-11-06 21:11:11,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:11:11,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:11:11,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:11:11,733 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:11:11,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2018-11-06 21:11:12,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2018-11-06 21:11:12,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:11:12,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:11:12,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:11:12,426 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:11:12,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2018-11-06 21:11:12,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2018-11-06 21:11:12,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2018-11-06 21:11:12,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2018-11-06 21:11:12,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2018-11-06 21:11:12,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2018-11-06 21:11:12,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2018-11-06 21:11:12,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:11:12,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:11:12,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:11:12,758 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:11:12,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:11:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:11:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:11:12,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:11:22,263 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:11:22,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:11:22 BoogieIcfgContainer [2018-11-06 21:11:22,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:11:22,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:11:22,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:11:22,269 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:11:22,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:11:09" (1/3) ... [2018-11-06 21:11:22,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0ca93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:11:22, skipping insertion in model container [2018-11-06 21:11:22,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (2/3) ... [2018-11-06 21:11:22,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0ca93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:11:22, skipping insertion in model container [2018-11-06 21:11:22,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:11:22" (3/3) ... [2018-11-06 21:11:22,277 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label27_true-unreach-call.c [2018-11-06 21:11:22,290 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:11:22,303 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:11:22,325 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:11:22,381 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:11:22,382 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:11:22,382 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:11:22,383 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:11:22,383 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:11:22,383 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:11:22,383 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:11:22,383 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:11:22,383 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:11:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-11-06 21:11:22,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-06 21:11:22,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:11:22,432 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:11:22,434 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:11:22,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:11:22,441 INFO L82 PathProgramCache]: Analyzing trace with hash 18549650, now seen corresponding path program 1 times [2018-11-06 21:11:22,443 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:11:22,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:11:22,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:22,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:22,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:11:22,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:11:22,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:11:22,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:11:22,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:11:22,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:11:22,897 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-11-06 21:11:35,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:11:35,061 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-11-06 21:11:35,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:11:35,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-06 21:11:35,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:11:35,118 INFO L225 Difference]: With dead ends: 3162 [2018-11-06 21:11:35,119 INFO L226 Difference]: Without dead ends: 2336 [2018-11-06 21:11:35,126 INFO L604 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 [2018-11-06 21:11:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-11-06 21:11:35,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1568. [2018-11-06 21:11:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2018-11-06 21:11:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2556 transitions. [2018-11-06 21:11:35,291 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2556 transitions. Word has length 32 [2018-11-06 21:11:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:11:35,292 INFO L480 AbstractCegarLoop]: Abstraction has 1568 states and 2556 transitions. [2018-11-06 21:11:35,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:11:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2556 transitions. [2018-11-06 21:11:35,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-06 21:11:35,298 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:11:35,299 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, 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] [2018-11-06 21:11:35,299 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:11:35,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:11:35,300 INFO L82 PathProgramCache]: Analyzing trace with hash 347203639, now seen corresponding path program 1 times [2018-11-06 21:11:35,300 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:11:35,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:11:35,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:35,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:35,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:11:35,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:11:35,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:11:35,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:11:35,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:11:35,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:11:35,690 INFO L87 Difference]: Start difference. First operand 1568 states and 2556 transitions. Second operand 4 states. [2018-11-06 21:11:46,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:11:46,123 INFO L93 Difference]: Finished difference Result 6142 states and 10096 transitions. [2018-11-06 21:11:46,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:11:46,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-11-06 21:11:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:11:46,148 INFO L225 Difference]: With dead ends: 6142 [2018-11-06 21:11:46,148 INFO L226 Difference]: Without dead ends: 4576 [2018-11-06 21:11:46,152 INFO L604 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 [2018-11-06 21:11:46,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2018-11-06 21:11:46,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4576. [2018-11-06 21:11:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2018-11-06 21:11:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6531 transitions. [2018-11-06 21:11:46,240 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6531 transitions. Word has length 108 [2018-11-06 21:11:46,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:11:46,241 INFO L480 AbstractCegarLoop]: Abstraction has 4576 states and 6531 transitions. [2018-11-06 21:11:46,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:11:46,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6531 transitions. [2018-11-06 21:11:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-06 21:11:46,245 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:11:46,245 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, 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] [2018-11-06 21:11:46,246 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:11:46,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:11:46,246 INFO L82 PathProgramCache]: Analyzing trace with hash 633186002, now seen corresponding path program 1 times [2018-11-06 21:11:46,246 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:11:46,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:11:46,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:46,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:46,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:11:46,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:11:46,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:11:46,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:11:46,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:11:46,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:11:46,703 INFO L87 Difference]: Start difference. First operand 4576 states and 6531 transitions. Second operand 6 states. [2018-11-06 21:11:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:11:56,765 INFO L93 Difference]: Finished difference Result 15166 states and 21142 transitions. [2018-11-06 21:11:56,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:11:56,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-11-06 21:11:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:11:56,828 INFO L225 Difference]: With dead ends: 15166 [2018-11-06 21:11:56,828 INFO L226 Difference]: Without dead ends: 10592 [2018-11-06 21:11:56,836 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:11:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2018-11-06 21:11:57,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 10592. [2018-11-06 21:11:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10592 states. [2018-11-06 21:11:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10592 states to 10592 states and 14292 transitions. [2018-11-06 21:11:57,056 INFO L78 Accepts]: Start accepts. Automaton has 10592 states and 14292 transitions. Word has length 110 [2018-11-06 21:11:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:11:57,056 INFO L480 AbstractCegarLoop]: Abstraction has 10592 states and 14292 transitions. [2018-11-06 21:11:57,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:11:57,057 INFO L276 IsEmpty]: Start isEmpty. Operand 10592 states and 14292 transitions. [2018-11-06 21:11:57,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-06 21:11:57,068 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:11:57,068 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:11:57,068 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:11:57,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:11:57,070 INFO L82 PathProgramCache]: Analyzing trace with hash 443921409, now seen corresponding path program 1 times [2018-11-06 21:11:57,070 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:11:57,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:11:57,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:57,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:57,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 125 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:11:57,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:11:57,572 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:11:57,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:57,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:11:57,865 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:11:57,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:11:57,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 21:11:57,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:11:57,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:11:57,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:11:57,898 INFO L87 Difference]: Start difference. First operand 10592 states and 14292 transitions. Second operand 7 states. [2018-11-06 21:11:59,780 WARN L179 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-11-06 21:12:16,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:12:16,758 INFO L93 Difference]: Finished difference Result 41518 states and 54744 transitions. [2018-11-06 21:12:16,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 21:12:16,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2018-11-06 21:12:16,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:12:16,865 INFO L225 Difference]: With dead ends: 41518 [2018-11-06 21:12:16,865 INFO L226 Difference]: Without dead ends: 29421 [2018-11-06 21:12:16,886 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:12:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29421 states. [2018-11-06 21:12:17,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29421 to 20367. [2018-11-06 21:12:17,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20367 states. [2018-11-06 21:12:17,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20367 states to 20367 states and 25010 transitions. [2018-11-06 21:12:17,337 INFO L78 Accepts]: Start accepts. Automaton has 20367 states and 25010 transitions. Word has length 182 [2018-11-06 21:12:17,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:12:17,337 INFO L480 AbstractCegarLoop]: Abstraction has 20367 states and 25010 transitions. [2018-11-06 21:12:17,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:12:17,338 INFO L276 IsEmpty]: Start isEmpty. Operand 20367 states and 25010 transitions. [2018-11-06 21:12:17,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-11-06 21:12:17,343 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:12:17,343 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:12:17,344 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:12:17,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:12:17,344 INFO L82 PathProgramCache]: Analyzing trace with hash -454335340, now seen corresponding path program 1 times [2018-11-06 21:12:17,344 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:12:17,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:12:17,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:17,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:17,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:12:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-06 21:12:17,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:12:17,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:12:17,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:12:17,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:12:17,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:12:17,710 INFO L87 Difference]: Start difference. First operand 20367 states and 25010 transitions. Second operand 3 states. [2018-11-06 21:12:22,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:12:22,646 INFO L93 Difference]: Finished difference Result 46748 states and 57858 transitions. [2018-11-06 21:12:22,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:12:22,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2018-11-06 21:12:22,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:12:22,705 INFO L225 Difference]: With dead ends: 46748 [2018-11-06 21:12:22,705 INFO L226 Difference]: Without dead ends: 27135 [2018-11-06 21:12:22,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:12:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27135 states. [2018-11-06 21:12:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27135 to 27135. [2018-11-06 21:12:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27135 states. [2018-11-06 21:12:23,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27135 states to 27135 states and 32871 transitions. [2018-11-06 21:12:23,178 INFO L78 Accepts]: Start accepts. Automaton has 27135 states and 32871 transitions. Word has length 264 [2018-11-06 21:12:23,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:12:23,179 INFO L480 AbstractCegarLoop]: Abstraction has 27135 states and 32871 transitions. [2018-11-06 21:12:23,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:12:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand 27135 states and 32871 transitions. [2018-11-06 21:12:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-11-06 21:12:23,189 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:12:23,189 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, 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, 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] [2018-11-06 21:12:23,189 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:12:23,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:12:23,190 INFO L82 PathProgramCache]: Analyzing trace with hash -410168344, now seen corresponding path program 1 times [2018-11-06 21:12:23,190 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:12:23,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:12:23,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:23,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:23,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:12:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-06 21:12:23,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:12:23,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:12:23,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:12:23,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:12:23,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:12:23,539 INFO L87 Difference]: Start difference. First operand 27135 states and 32871 transitions. Second operand 3 states. [2018-11-06 21:12:29,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:12:29,037 INFO L93 Difference]: Finished difference Result 53516 states and 64983 transitions. [2018-11-06 21:12:29,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:12:29,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2018-11-06 21:12:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:12:29,088 INFO L225 Difference]: With dead ends: 53516 [2018-11-06 21:12:29,088 INFO L226 Difference]: Without dead ends: 27135 [2018-11-06 21:12:29,125 INFO L604 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 [2018-11-06 21:12:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27135 states. [2018-11-06 21:12:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27135 to 25631. [2018-11-06 21:12:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25631 states. [2018-11-06 21:12:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25631 states to 25631 states and 29966 transitions. [2018-11-06 21:12:29,748 INFO L78 Accepts]: Start accepts. Automaton has 25631 states and 29966 transitions. Word has length 334 [2018-11-06 21:12:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:12:29,748 INFO L480 AbstractCegarLoop]: Abstraction has 25631 states and 29966 transitions. [2018-11-06 21:12:29,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:12:29,749 INFO L276 IsEmpty]: Start isEmpty. Operand 25631 states and 29966 transitions. [2018-11-06 21:12:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-11-06 21:12:29,758 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:12:29,759 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:12:29,759 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:12:29,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:12:29,760 INFO L82 PathProgramCache]: Analyzing trace with hash -262376094, now seen corresponding path program 1 times [2018-11-06 21:12:29,760 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:12:29,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:12:29,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:29,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:29,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:12:30,155 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 21:12:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 21:12:30,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:12:30,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:12:30,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:12:30,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:12:30,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:12:30,312 INFO L87 Difference]: Start difference. First operand 25631 states and 29966 transitions. Second operand 4 states. [2018-11-06 21:12:37,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:12:37,326 INFO L93 Difference]: Finished difference Result 87356 states and 102501 transitions. [2018-11-06 21:12:37,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:12:37,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 362 [2018-11-06 21:12:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:12:37,407 INFO L225 Difference]: With dead ends: 87356 [2018-11-06 21:12:37,407 INFO L226 Difference]: Without dead ends: 59459 [2018-11-06 21:12:37,437 INFO L604 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 [2018-11-06 21:12:37,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59459 states. [2018-11-06 21:12:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59459 to 54947. [2018-11-06 21:12:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54947 states. [2018-11-06 21:12:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54947 states to 54947 states and 61557 transitions. [2018-11-06 21:12:38,204 INFO L78 Accepts]: Start accepts. Automaton has 54947 states and 61557 transitions. Word has length 362 [2018-11-06 21:12:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:12:38,205 INFO L480 AbstractCegarLoop]: Abstraction has 54947 states and 61557 transitions. [2018-11-06 21:12:38,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:12:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 54947 states and 61557 transitions. [2018-11-06 21:12:38,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-11-06 21:12:38,230 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:12:38,231 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:12:38,231 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:12:38,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:12:38,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1894606626, now seen corresponding path program 1 times [2018-11-06 21:12:38,232 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:12:38,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:12:38,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:38,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:38,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:12:38,896 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-06 21:12:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 435 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-06 21:12:39,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:12:39,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:12:39,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:12:39,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:12:39,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:12:39,668 INFO L87 Difference]: Start difference. First operand 54947 states and 61557 transitions. Second operand 4 states. [2018-11-06 21:12:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:12:45,581 INFO L93 Difference]: Finished difference Result 134708 states and 150803 transitions. [2018-11-06 21:12:45,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:12:45,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2018-11-06 21:12:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:12:45,681 INFO L225 Difference]: With dead ends: 134708 [2018-11-06 21:12:45,681 INFO L226 Difference]: Without dead ends: 80515 [2018-11-06 21:12:45,723 INFO L604 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 [2018-11-06 21:12:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80515 states. [2018-11-06 21:12:46,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80515 to 79011. [2018-11-06 21:12:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79011 states. [2018-11-06 21:12:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79011 states to 79011 states and 87860 transitions. [2018-11-06 21:12:46,531 INFO L78 Accepts]: Start accepts. Automaton has 79011 states and 87860 transitions. Word has length 466 [2018-11-06 21:12:46,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:12:46,532 INFO L480 AbstractCegarLoop]: Abstraction has 79011 states and 87860 transitions. [2018-11-06 21:12:46,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:12:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 79011 states and 87860 transitions. [2018-11-06 21:12:46,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-11-06 21:12:46,557 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:12:46,558 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, 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, 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] [2018-11-06 21:12:46,558 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:12:46,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:12:46,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1065961236, now seen corresponding path program 1 times [2018-11-06 21:12:46,559 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:12:46,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:12:46,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:46,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:46,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:12:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-11-06 21:12:47,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:12:47,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:12:47,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:12:47,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:12:47,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:12:47,616 INFO L87 Difference]: Start difference. First operand 79011 states and 87860 transitions. Second operand 5 states. [2018-11-06 21:12:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:12:56,495 INFO L93 Difference]: Finished difference Result 231000 states and 256955 transitions. [2018-11-06 21:12:56,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:12:56,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 470 [2018-11-06 21:12:56,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:12:56,690 INFO L225 Difference]: With dead ends: 231000 [2018-11-06 21:12:56,690 INFO L226 Difference]: Without dead ends: 152743 [2018-11-06 21:12:56,765 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:12:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152743 states. [2018-11-06 21:12:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152743 to 114391. [2018-11-06 21:12:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114391 states. [2018-11-06 21:12:58,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114391 states to 114391 states and 123457 transitions. [2018-11-06 21:12:58,874 INFO L78 Accepts]: Start accepts. Automaton has 114391 states and 123457 transitions. Word has length 470 [2018-11-06 21:12:58,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:12:58,875 INFO L480 AbstractCegarLoop]: Abstraction has 114391 states and 123457 transitions. [2018-11-06 21:12:58,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:12:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 114391 states and 123457 transitions. [2018-11-06 21:12:58,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2018-11-06 21:12:58,961 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:12:58,962 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, 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, 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] [2018-11-06 21:12:58,962 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:12:58,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:12:58,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1428436794, now seen corresponding path program 1 times [2018-11-06 21:12:58,963 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:12:58,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:12:58,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:58,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:58,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 21:13:00,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:13:00,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:13:00,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:13:00,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:13:00,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:13:00,813 INFO L87 Difference]: Start difference. First operand 114391 states and 123457 transitions. Second operand 4 states. [2018-11-06 21:13:07,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:13:07,744 INFO L93 Difference]: Finished difference Result 227276 states and 245332 transitions. [2018-11-06 21:13:07,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:13:07,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 990 [2018-11-06 21:13:07,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:13:07,843 INFO L225 Difference]: With dead ends: 227276 [2018-11-06 21:13:07,843 INFO L226 Difference]: Without dead ends: 92528 [2018-11-06 21:13:07,905 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:13:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92528 states. [2018-11-06 21:13:08,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92528 to 89520. [2018-11-06 21:13:08,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89520 states. [2018-11-06 21:13:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89520 states to 89520 states and 94426 transitions. [2018-11-06 21:13:08,672 INFO L78 Accepts]: Start accepts. Automaton has 89520 states and 94426 transitions. Word has length 990 [2018-11-06 21:13:08,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:13:08,674 INFO L480 AbstractCegarLoop]: Abstraction has 89520 states and 94426 transitions. [2018-11-06 21:13:08,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:13:08,675 INFO L276 IsEmpty]: Start isEmpty. Operand 89520 states and 94426 transitions. [2018-11-06 21:13:08,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2018-11-06 21:13:08,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:13:08,739 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:13:08,740 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:13:08,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:13:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1686038366, now seen corresponding path program 1 times [2018-11-06 21:13:08,740 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:13:08,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:13:08,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:08,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:08,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 656 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-11-06 21:13:10,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:13:10,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:13:10,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:13:10,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:13:10,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:13:10,156 INFO L87 Difference]: Start difference. First operand 89520 states and 94426 transitions. Second operand 3 states. [2018-11-06 21:13:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:13:14,797 INFO L93 Difference]: Finished difference Result 221902 states and 234786 transitions. [2018-11-06 21:13:14,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:13:14,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1019 [2018-11-06 21:13:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:13:14,955 INFO L225 Difference]: With dead ends: 221902 [2018-11-06 21:13:14,955 INFO L226 Difference]: Without dead ends: 132383 [2018-11-06 21:13:15,021 INFO L604 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 [2018-11-06 21:13:15,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132383 states. [2018-11-06 21:13:16,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132383 to 120351. [2018-11-06 21:13:16,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120351 states. [2018-11-06 21:13:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120351 states to 120351 states and 126128 transitions. [2018-11-06 21:13:16,685 INFO L78 Accepts]: Start accepts. Automaton has 120351 states and 126128 transitions. Word has length 1019 [2018-11-06 21:13:16,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:13:16,685 INFO L480 AbstractCegarLoop]: Abstraction has 120351 states and 126128 transitions. [2018-11-06 21:13:16,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:13:16,685 INFO L276 IsEmpty]: Start isEmpty. Operand 120351 states and 126128 transitions. [2018-11-06 21:13:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2018-11-06 21:13:16,752 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:13:16,753 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:13:16,753 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:13:16,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:13:16,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1518124272, now seen corresponding path program 1 times [2018-11-06 21:13:16,754 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:13:16,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:13:16,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:16,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:16,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 680 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-06 21:13:17,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:13:17,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:13:17,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:13:17,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:13:17,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:13:17,752 INFO L87 Difference]: Start difference. First operand 120351 states and 126128 transitions. Second operand 4 states. [2018-11-06 21:13:25,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:13:25,107 INFO L93 Difference]: Finished difference Result 268524 states and 280933 transitions. [2018-11-06 21:13:25,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:13:25,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1027 [2018-11-06 21:13:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:13:25,260 INFO L225 Difference]: With dead ends: 268524 [2018-11-06 21:13:25,261 INFO L226 Difference]: Without dead ends: 148927 [2018-11-06 21:13:25,332 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:13:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148927 states. [2018-11-06 21:13:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148927 to 137647. [2018-11-06 21:13:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137647 states. [2018-11-06 21:13:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137647 states to 137647 states and 143348 transitions. [2018-11-06 21:13:27,297 INFO L78 Accepts]: Start accepts. Automaton has 137647 states and 143348 transitions. Word has length 1027 [2018-11-06 21:13:27,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:13:27,297 INFO L480 AbstractCegarLoop]: Abstraction has 137647 states and 143348 transitions. [2018-11-06 21:13:27,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:13:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 137647 states and 143348 transitions. [2018-11-06 21:13:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2018-11-06 21:13:27,365 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:13:27,366 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:13:27,366 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:13:27,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:13:27,367 INFO L82 PathProgramCache]: Analyzing trace with hash 503842909, now seen corresponding path program 1 times [2018-11-06 21:13:27,367 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:13:27,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:13:27,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:27,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:27,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-11-06 21:13:30,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:13:30,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:13:30,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:13:30,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:13:30,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:13:30,047 INFO L87 Difference]: Start difference. First operand 137647 states and 143348 transitions. Second operand 4 states. [2018-11-06 21:13:36,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:13:36,391 INFO L93 Difference]: Finished difference Result 276044 states and 287449 transitions. [2018-11-06 21:13:36,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:13:36,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1073 [2018-11-06 21:13:36,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:13:36,538 INFO L225 Difference]: With dead ends: 276044 [2018-11-06 21:13:36,538 INFO L226 Difference]: Without dead ends: 139151 [2018-11-06 21:13:36,610 INFO L604 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 [2018-11-06 21:13:36,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139151 states. [2018-11-06 21:13:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139151 to 135391. [2018-11-06 21:13:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135391 states. [2018-11-06 21:13:38,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135391 states to 135391 states and 139618 transitions. [2018-11-06 21:13:38,810 INFO L78 Accepts]: Start accepts. Automaton has 135391 states and 139618 transitions. Word has length 1073 [2018-11-06 21:13:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:13:38,811 INFO L480 AbstractCegarLoop]: Abstraction has 135391 states and 139618 transitions. [2018-11-06 21:13:38,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:13:38,811 INFO L276 IsEmpty]: Start isEmpty. Operand 135391 states and 139618 transitions. [2018-11-06 21:13:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2018-11-06 21:13:38,885 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:13:38,885 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:13:38,886 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:13:38,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:13:38,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1300886854, now seen corresponding path program 1 times [2018-11-06 21:13:38,886 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:13:38,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:13:38,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:38,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:38,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:39,824 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-06 21:13:40,350 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2018-11-06 21:13:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 619 proven. 30 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-11-06 21:13:44,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:13:44,664 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:13:44,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:44,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:13:45,429 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 16 [2018-11-06 21:13:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 619 proven. 30 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-11-06 21:13:46,646 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:13:46,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4] total 13 [2018-11-06 21:13:46,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 21:13:46,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 21:13:46,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:13:46,649 INFO L87 Difference]: Start difference. First operand 135391 states and 139618 transitions. Second operand 13 states. [2018-11-06 21:14:27,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:14:27,426 INFO L93 Difference]: Finished difference Result 356815 states and 368828 transitions. [2018-11-06 21:14:27,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-06 21:14:27,426 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1157 [2018-11-06 21:14:27,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:14:27,427 INFO L225 Difference]: With dead ends: 356815 [2018-11-06 21:14:27,427 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 21:14:27,493 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1167 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=390, Invalid=942, Unknown=0, NotChecked=0, Total=1332 [2018-11-06 21:14:27,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 21:14:27,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 21:14:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 21:14:27,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 21:14:27,494 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1157 [2018-11-06 21:14:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:14:27,494 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 21:14:27,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-06 21:14:27,495 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 21:14:27,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 21:14:27,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 21:14:27,583 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:27,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:27,623 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:27,727 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:27,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,082 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,087 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,088 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,189 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,255 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,283 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,287 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,507 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,603 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,643 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,755 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,777 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:28,857 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:29,499 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:29,546 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:29,682 WARN L179 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 706 DAG size of output: 442 [2018-11-06 21:14:29,759 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:29,767 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:29,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:29,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:29,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,282 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,283 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,405 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,445 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,468 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,474 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,554 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,655 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,668 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,743 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,777 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,864 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:30,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:31,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:31,495 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:31,612 WARN L179 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 704 DAG size of output: 441 [2018-11-06 21:14:31,683 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:31,690 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:31,714 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,195 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,478 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,498 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,588 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,600 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,633 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,655 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,658 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,725 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,925 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:32,958 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:33,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:33,052 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:33,072 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:33,145 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:33,706 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:33,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:33,855 WARN L179 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 712 DAG size of output: 447 [2018-11-06 21:14:33,912 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:33,926 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:33,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,035 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,312 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,313 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,468 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,473 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,530 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,614 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,629 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,701 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,733 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,795 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,801 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,814 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:34,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,295 WARN L179 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 706 DAG size of output: 442 [2018-11-06 21:14:35,348 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,353 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,460 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,603 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,616 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,616 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,618 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,645 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,667 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,676 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,704 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,722 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,726 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,888 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:35,978 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:36,011 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:36,085 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:36,100 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:36,119 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:36,191 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:36,650 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:36,671 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:14:36,736 WARN L179 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 712 DAG size of output: 447 [2018-11-06 21:14:40,086 WARN L179 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 424 DAG size of output: 80 [2018-11-06 21:14:43,136 WARN L179 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 423 DAG size of output: 78 [2018-11-06 21:14:46,232 WARN L179 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 429 DAG size of output: 74 Received shutdown request... [2018-11-06 21:14:48,750 WARN L187 SmtUtils]: Removed 15 from assertion stack [2018-11-06 21:14:48,751 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-11-06 21:14:48,752 INFO L168 Benchmark]: Toolchain (without parser) took 219171.01 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 111.0 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-06 21:14:48,754 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:14:48,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2148.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-06 21:14:48,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 693.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -964.9 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:14:48,756 INFO L168 Benchmark]: Boogie Preprocessor took 330.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2018-11-06 21:14:48,757 INFO L168 Benchmark]: RCFGBuilder took 9506.82 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 216.5 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -148.2 MB). Peak memory consumption was 623.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:14:48,758 INFO L168 Benchmark]: TraceAbstraction took 206486.11 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 1.3 GB in the end (delta: 987.6 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-06 21:14:48,765 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2148.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 693.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -964.9 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 330.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9506.82 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 216.5 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -148.2 MB). Peak memory consumption was 623.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206486.11 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 1.3 GB in the end (delta: 987.6 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 424. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown