java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 08:04:57,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 08:04:57,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 08:04:57,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 08:04:57,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 08:04:57,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 08:04:57,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 08:04:57,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 08:04:57,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 08:04:57,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 08:04:57,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 08:04:57,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 08:04:57,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 08:04:57,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 08:04:57,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 08:04:57,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 08:04:57,371 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 08:04:57,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 08:04:57,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 08:04:57,372 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 08:04:57,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 08:04:57,373 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 08:04:57,373 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 08:04:57,373 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 08:04:57,373 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 08:04:57,373 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 08:04:57,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 08:04:57,374 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 08:04:57,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 08:04:57,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 08:04:57,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 08:04:57,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 08:04:57,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 08:04:57,376 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 08:04:57,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 08:04:57,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 08:04:57,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 08:04:57,377 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 08:04:57,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 08:04:57,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 08:04:57,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 08:04:57,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 08:04:57,379 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 08:04:57,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 08:04:57,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 08:04:57,379 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 08:04:57,414 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 08:04:57,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 08:04:57,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 08:04:57,433 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 08:04:57,433 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 08:04:57,434 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-10 08:04:57,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7147f2975/351d964cdc2d48fea0505f6abaa16d4e/FLAGdad714511 [2019-09-10 08:04:58,038 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 08:04:58,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-10 08:04:58,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7147f2975/351d964cdc2d48fea0505f6abaa16d4e/FLAGdad714511 [2019-09-10 08:04:58,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7147f2975/351d964cdc2d48fea0505f6abaa16d4e [2019-09-10 08:04:58,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 08:04:58,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 08:04:58,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 08:04:58,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 08:04:58,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 08:04:58,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 08:04:58" (1/1) ... [2019-09-10 08:04:58,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1f7f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 08:04:58, skipping insertion in model container [2019-09-10 08:04:58,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 08:04:58" (1/1) ... [2019-09-10 08:04:58,375 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 08:04:58,425 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 08:04:58,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 08:04:58,823 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 08:04:58,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 08:04:58,901 INFO L192 MainTranslator]: Completed translation [2019-09-10 08:04:58,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 08:04:58 WrapperNode [2019-09-10 08:04:58,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 08:04:58,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 08:04:58,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 08:04:58,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 08:04:58,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 08:04:58" (1/1) ... [2019-09-10 08:04:58,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 08:04:58" (1/1) ... [2019-09-10 08:04:58,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 08:04:58" (1/1) ... [2019-09-10 08:04:58,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 08:04:58" (1/1) ... [2019-09-10 08:04:58,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 08:04:58" (1/1) ... [2019-09-10 08:04:58,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 08:04:58" (1/1) ... [2019-09-10 08:04:58,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 08:04:58" (1/1) ... [2019-09-10 08:04:58,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 08:04:58,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 08:04:58,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 08:04:58,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 08:04:58,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 08:04:58" (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 [2019-09-10 08:04:59,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 08:04:59,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 08:04:59,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 08:04:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 08:04:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 08:04:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-10 08:04:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-10 08:04:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-10 08:04:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 08:04:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-10 08:04:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-10 08:04:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-10 08:04:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-10 08:04:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-10 08:04:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-10 08:04:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2019-09-10 08:04:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-10 08:04:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-10 08:04:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 08:04:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 08:04:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 08:04:59,713 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 08:04:59,713 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 08:04:59,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 08:04:59 BoogieIcfgContainer [2019-09-10 08:04:59,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 08:04:59,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 08:04:59,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 08:04:59,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 08:04:59,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 08:04:58" (1/3) ... [2019-09-10 08:04:59,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aba56e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 08:04:59, skipping insertion in model container [2019-09-10 08:04:59,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 08:04:58" (2/3) ... [2019-09-10 08:04:59,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aba56e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 08:04:59, skipping insertion in model container [2019-09-10 08:04:59,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 08:04:59" (3/3) ... [2019-09-10 08:04:59,723 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-10 08:04:59,733 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 08:04:59,742 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 08:04:59,759 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 08:04:59,787 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 08:04:59,787 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 08:04:59,787 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 08:04:59,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 08:04:59,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 08:04:59,788 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 08:04:59,788 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 08:04:59,788 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 08:04:59,808 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2019-09-10 08:04:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 08:04:59,822 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:04:59,823 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:04:59,826 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:04:59,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:04:59,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1817942927, now seen corresponding path program 1 times [2019-09-10 08:04:59,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:04:59,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:04:59,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:04:59,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:04:59,887 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:00,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:00,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:05:00,308 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:00,315 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:05:00,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:05:00,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:05:00,334 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 3 states. [2019-09-10 08:05:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:00,418 INFO L93 Difference]: Finished difference Result 162 states and 258 transitions. [2019-09-10 08:05:00,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:05:00,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-09-10 08:05:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:00,433 INFO L225 Difference]: With dead ends: 162 [2019-09-10 08:05:00,433 INFO L226 Difference]: Without dead ends: 154 [2019-09-10 08:05:00,435 INFO L628 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 [2019-09-10 08:05:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-09-10 08:05:00,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2019-09-10 08:05:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-09-10 08:05:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 219 transitions. [2019-09-10 08:05:00,490 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 219 transitions. Word has length 64 [2019-09-10 08:05:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:00,491 INFO L475 AbstractCegarLoop]: Abstraction has 152 states and 219 transitions. [2019-09-10 08:05:00,491 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:05:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 219 transitions. [2019-09-10 08:05:00,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 08:05:00,494 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:00,494 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:05:00,494 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:00,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:00,495 INFO L82 PathProgramCache]: Analyzing trace with hash 344530776, now seen corresponding path program 1 times [2019-09-10 08:05:00,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:00,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:00,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:00,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:00,498 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:00,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:00,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:05:00,645 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:00,646 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:05:00,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:05:00,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:05:00,647 INFO L87 Difference]: Start difference. First operand 152 states and 219 transitions. Second operand 3 states. [2019-09-10 08:05:00,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:00,685 INFO L93 Difference]: Finished difference Result 250 states and 372 transitions. [2019-09-10 08:05:00,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:05:00,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-10 08:05:00,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:00,692 INFO L225 Difference]: With dead ends: 250 [2019-09-10 08:05:00,693 INFO L226 Difference]: Without dead ends: 250 [2019-09-10 08:05:00,696 INFO L628 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 [2019-09-10 08:05:00,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-09-10 08:05:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2019-09-10 08:05:00,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2019-09-10 08:05:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 371 transitions. [2019-09-10 08:05:00,719 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 371 transitions. Word has length 65 [2019-09-10 08:05:00,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:00,720 INFO L475 AbstractCegarLoop]: Abstraction has 248 states and 371 transitions. [2019-09-10 08:05:00,720 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:05:00,720 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 371 transitions. [2019-09-10 08:05:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 08:05:00,722 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:00,722 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:05:00,723 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:00,723 INFO L82 PathProgramCache]: Analyzing trace with hash -288418835, now seen corresponding path program 1 times [2019-09-10 08:05:00,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:00,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:00,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:00,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:00,726 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:00,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:00,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:05:00,815 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:00,816 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:05:00,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:05:00,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:05:00,817 INFO L87 Difference]: Start difference. First operand 248 states and 371 transitions. Second operand 3 states. [2019-09-10 08:05:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:00,848 INFO L93 Difference]: Finished difference Result 426 states and 648 transitions. [2019-09-10 08:05:00,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:05:00,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-10 08:05:00,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:00,854 INFO L225 Difference]: With dead ends: 426 [2019-09-10 08:05:00,854 INFO L226 Difference]: Without dead ends: 426 [2019-09-10 08:05:00,855 INFO L628 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 [2019-09-10 08:05:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-09-10 08:05:00,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 424. [2019-09-10 08:05:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-09-10 08:05:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 647 transitions. [2019-09-10 08:05:00,879 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 647 transitions. Word has length 66 [2019-09-10 08:05:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:00,880 INFO L475 AbstractCegarLoop]: Abstraction has 424 states and 647 transitions. [2019-09-10 08:05:00,880 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:05:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 647 transitions. [2019-09-10 08:05:00,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-10 08:05:00,882 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:00,882 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:05:00,882 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:00,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:00,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2091271574, now seen corresponding path program 1 times [2019-09-10 08:05:00,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:00,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:00,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:00,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:00,885 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:00,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:00,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:05:00,967 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:00,967 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:05:00,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:05:00,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:05:00,968 INFO L87 Difference]: Start difference. First operand 424 states and 647 transitions. Second operand 3 states. [2019-09-10 08:05:00,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:00,992 INFO L93 Difference]: Finished difference Result 746 states and 1144 transitions. [2019-09-10 08:05:00,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:05:00,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-09-10 08:05:00,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:00,997 INFO L225 Difference]: With dead ends: 746 [2019-09-10 08:05:00,998 INFO L226 Difference]: Without dead ends: 746 [2019-09-10 08:05:00,998 INFO L628 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 [2019-09-10 08:05:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-09-10 08:05:01,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2019-09-10 08:05:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-09-10 08:05:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1143 transitions. [2019-09-10 08:05:01,025 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1143 transitions. Word has length 67 [2019-09-10 08:05:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:01,026 INFO L475 AbstractCegarLoop]: Abstraction has 744 states and 1143 transitions. [2019-09-10 08:05:01,026 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:05:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1143 transitions. [2019-09-10 08:05:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 08:05:01,028 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:01,028 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:05:01,029 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:01,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:01,029 INFO L82 PathProgramCache]: Analyzing trace with hash -900755135, now seen corresponding path program 1 times [2019-09-10 08:05:01,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:01,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:01,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:01,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:01,031 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:01,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:01,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 08:05:01,170 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:01,170 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 08:05:01,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 08:05:01,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 08:05:01,171 INFO L87 Difference]: Start difference. First operand 744 states and 1143 transitions. Second operand 5 states. [2019-09-10 08:05:01,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:01,322 INFO L93 Difference]: Finished difference Result 744 states and 1127 transitions. [2019-09-10 08:05:01,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 08:05:01,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 08:05:01,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:01,328 INFO L225 Difference]: With dead ends: 744 [2019-09-10 08:05:01,328 INFO L226 Difference]: Without dead ends: 744 [2019-09-10 08:05:01,329 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 08:05:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-09-10 08:05:01,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-09-10 08:05:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-09-10 08:05:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1127 transitions. [2019-09-10 08:05:01,352 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1127 transitions. Word has length 68 [2019-09-10 08:05:01,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:01,352 INFO L475 AbstractCegarLoop]: Abstraction has 744 states and 1127 transitions. [2019-09-10 08:05:01,353 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 08:05:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1127 transitions. [2019-09-10 08:05:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 08:05:01,354 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:01,354 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:05:01,355 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:01,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:01,355 INFO L82 PathProgramCache]: Analyzing trace with hash 426630054, now seen corresponding path program 1 times [2019-09-10 08:05:01,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:01,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:01,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:01,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:01,358 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:01,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:01,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 08:05:01,492 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:01,493 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 08:05:01,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 08:05:01,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 08:05:01,494 INFO L87 Difference]: Start difference. First operand 744 states and 1127 transitions. Second operand 5 states. [2019-09-10 08:05:01,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:01,604 INFO L93 Difference]: Finished difference Result 744 states and 1119 transitions. [2019-09-10 08:05:01,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 08:05:01,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 08:05:01,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:01,609 INFO L225 Difference]: With dead ends: 744 [2019-09-10 08:05:01,610 INFO L226 Difference]: Without dead ends: 744 [2019-09-10 08:05:01,610 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 08:05:01,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-09-10 08:05:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-09-10 08:05:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-09-10 08:05:01,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1119 transitions. [2019-09-10 08:05:01,633 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1119 transitions. Word has length 68 [2019-09-10 08:05:01,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:01,635 INFO L475 AbstractCegarLoop]: Abstraction has 744 states and 1119 transitions. [2019-09-10 08:05:01,635 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 08:05:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1119 transitions. [2019-09-10 08:05:01,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 08:05:01,643 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:01,643 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:05:01,649 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:01,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:01,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1700498059, now seen corresponding path program 1 times [2019-09-10 08:05:01,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:01,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:01,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:01,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:01,655 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:01,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:01,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 08:05:01,742 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:01,743 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 08:05:01,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 08:05:01,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 08:05:01,744 INFO L87 Difference]: Start difference. First operand 744 states and 1119 transitions. Second operand 5 states. [2019-09-10 08:05:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:01,848 INFO L93 Difference]: Finished difference Result 744 states and 1111 transitions. [2019-09-10 08:05:01,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 08:05:01,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 08:05:01,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:01,853 INFO L225 Difference]: With dead ends: 744 [2019-09-10 08:05:01,854 INFO L226 Difference]: Without dead ends: 744 [2019-09-10 08:05:01,854 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 08:05:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-09-10 08:05:01,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-09-10 08:05:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-09-10 08:05:01,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1111 transitions. [2019-09-10 08:05:01,875 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1111 transitions. Word has length 68 [2019-09-10 08:05:01,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:01,876 INFO L475 AbstractCegarLoop]: Abstraction has 744 states and 1111 transitions. [2019-09-10 08:05:01,876 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 08:05:01,876 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1111 transitions. [2019-09-10 08:05:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 08:05:01,877 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:01,877 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:05:01,878 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:01,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:01,878 INFO L82 PathProgramCache]: Analyzing trace with hash 253468464, now seen corresponding path program 1 times [2019-09-10 08:05:01,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:01,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:01,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:01,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:01,880 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:02,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:02,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 08:05:02,051 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:02,052 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 08:05:02,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 08:05:02,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-10 08:05:02,053 INFO L87 Difference]: Start difference. First operand 744 states and 1111 transitions. Second operand 7 states. [2019-09-10 08:05:02,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:02,274 INFO L93 Difference]: Finished difference Result 5686 states and 8526 transitions. [2019-09-10 08:05:02,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 08:05:02,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-09-10 08:05:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:02,309 INFO L225 Difference]: With dead ends: 5686 [2019-09-10 08:05:02,309 INFO L226 Difference]: Without dead ends: 5686 [2019-09-10 08:05:02,310 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-09-10 08:05:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2019-09-10 08:05:02,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 2152. [2019-09-10 08:05:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2152 states. [2019-09-10 08:05:02,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3223 transitions. [2019-09-10 08:05:02,422 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3223 transitions. Word has length 68 [2019-09-10 08:05:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:02,422 INFO L475 AbstractCegarLoop]: Abstraction has 2152 states and 3223 transitions. [2019-09-10 08:05:02,422 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 08:05:02,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3223 transitions. [2019-09-10 08:05:02,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-10 08:05:02,424 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:02,424 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:05:02,424 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:02,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:02,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2103084374, now seen corresponding path program 1 times [2019-09-10 08:05:02,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:02,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:02,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:02,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:02,428 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:02,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:02,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 08:05:02,685 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:02,686 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 08:05:02,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 08:05:02,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-09-10 08:05:02,686 INFO L87 Difference]: Start difference. First operand 2152 states and 3223 transitions. Second operand 7 states. [2019-09-10 08:05:02,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:02,817 INFO L93 Difference]: Finished difference Result 2862 states and 4282 transitions. [2019-09-10 08:05:02,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 08:05:02,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-10 08:05:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:02,832 INFO L225 Difference]: With dead ends: 2862 [2019-09-10 08:05:02,832 INFO L226 Difference]: Without dead ends: 2862 [2019-09-10 08:05:02,833 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-09-10 08:05:02,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2019-09-10 08:05:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2152. [2019-09-10 08:05:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2152 states. [2019-09-10 08:05:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3207 transitions. [2019-09-10 08:05:02,890 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3207 transitions. Word has length 70 [2019-09-10 08:05:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:02,890 INFO L475 AbstractCegarLoop]: Abstraction has 2152 states and 3207 transitions. [2019-09-10 08:05:02,890 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 08:05:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3207 transitions. [2019-09-10 08:05:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-10 08:05:02,891 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:02,891 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:05:02,891 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:02,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:02,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2123133717, now seen corresponding path program 1 times [2019-09-10 08:05:02,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:02,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:02,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:02,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:02,895 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:03,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:03,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:05:03,023 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:03,023 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:05:03,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:05:03,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:05:03,024 INFO L87 Difference]: Start difference. First operand 2152 states and 3207 transitions. Second operand 3 states. [2019-09-10 08:05:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:03,067 INFO L93 Difference]: Finished difference Result 4010 states and 5800 transitions. [2019-09-10 08:05:03,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:05:03,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-09-10 08:05:03,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:03,085 INFO L225 Difference]: With dead ends: 4010 [2019-09-10 08:05:03,085 INFO L226 Difference]: Without dead ends: 4010 [2019-09-10 08:05:03,085 INFO L628 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 [2019-09-10 08:05:03,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2019-09-10 08:05:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3960. [2019-09-10 08:05:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3960 states. [2019-09-10 08:05:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3960 states to 3960 states and 5751 transitions. [2019-09-10 08:05:03,171 INFO L78 Accepts]: Start accepts. Automaton has 3960 states and 5751 transitions. Word has length 70 [2019-09-10 08:05:03,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:03,172 INFO L475 AbstractCegarLoop]: Abstraction has 3960 states and 5751 transitions. [2019-09-10 08:05:03,172 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:05:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3960 states and 5751 transitions. [2019-09-10 08:05:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-10 08:05:03,173 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:03,173 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:05:03,173 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:03,174 INFO L82 PathProgramCache]: Analyzing trace with hash -48803801, now seen corresponding path program 1 times [2019-09-10 08:05:03,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:03,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:03,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:03,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:03,175 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:03,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:03,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:05:03,226 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:03,226 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:05:03,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:05:03,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:05:03,227 INFO L87 Difference]: Start difference. First operand 3960 states and 5751 transitions. Second operand 3 states. [2019-09-10 08:05:03,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:03,274 INFO L93 Difference]: Finished difference Result 5596 states and 8154 transitions. [2019-09-10 08:05:03,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:05:03,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-09-10 08:05:03,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:03,301 INFO L225 Difference]: With dead ends: 5596 [2019-09-10 08:05:03,301 INFO L226 Difference]: Without dead ends: 5596 [2019-09-10 08:05:03,302 INFO L628 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 [2019-09-10 08:05:03,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2019-09-10 08:05:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 5594. [2019-09-10 08:05:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5594 states. [2019-09-10 08:05:03,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 8153 transitions. [2019-09-10 08:05:03,413 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 8153 transitions. Word has length 71 [2019-09-10 08:05:03,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:03,413 INFO L475 AbstractCegarLoop]: Abstraction has 5594 states and 8153 transitions. [2019-09-10 08:05:03,413 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:05:03,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 8153 transitions. [2019-09-10 08:05:03,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-10 08:05:03,414 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:03,414 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:05:03,414 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:03,415 INFO L82 PathProgramCache]: Analyzing trace with hash -773015508, now seen corresponding path program 1 times [2019-09-10 08:05:03,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:03,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:03,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:03,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:03,417 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:03,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:03,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 08:05:03,517 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:03,517 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 08:05:03,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 08:05:03,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 08:05:03,518 INFO L87 Difference]: Start difference. First operand 5594 states and 8153 transitions. Second operand 5 states. [2019-09-10 08:05:03,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:03,603 INFO L93 Difference]: Finished difference Result 10438 states and 15038 transitions. [2019-09-10 08:05:03,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 08:05:03,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-09-10 08:05:03,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:03,654 INFO L225 Difference]: With dead ends: 10438 [2019-09-10 08:05:03,655 INFO L226 Difference]: Without dead ends: 10438 [2019-09-10 08:05:03,655 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 08:05:03,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10438 states. [2019-09-10 08:05:03,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10438 to 5818. [2019-09-10 08:05:03,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5818 states. [2019-09-10 08:05:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 8361 transitions. [2019-09-10 08:05:03,821 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 8361 transitions. Word has length 71 [2019-09-10 08:05:03,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:03,821 INFO L475 AbstractCegarLoop]: Abstraction has 5818 states and 8361 transitions. [2019-09-10 08:05:03,822 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 08:05:03,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 8361 transitions. [2019-09-10 08:05:03,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 08:05:03,826 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:03,826 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:05:03,827 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:03,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:03,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1754912134, now seen corresponding path program 1 times [2019-09-10 08:05:03,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:03,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:03,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:03,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:03,830 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-10 08:05:04,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:04,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 08:05:04,003 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:04,004 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 08:05:04,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 08:05:04,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-10 08:05:04,005 INFO L87 Difference]: Start difference. First operand 5818 states and 8361 transitions. Second operand 7 states. [2019-09-10 08:05:04,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:04,224 INFO L93 Difference]: Finished difference Result 22564 states and 32430 transitions. [2019-09-10 08:05:04,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 08:05:04,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-09-10 08:05:04,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:04,273 INFO L225 Difference]: With dead ends: 22564 [2019-09-10 08:05:04,273 INFO L226 Difference]: Without dead ends: 22564 [2019-09-10 08:05:04,274 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2019-09-10 08:05:04,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22564 states. [2019-09-10 08:05:04,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22564 to 9690. [2019-09-10 08:05:04,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9690 states. [2019-09-10 08:05:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9690 states to 9690 states and 13833 transitions. [2019-09-10 08:05:04,546 INFO L78 Accepts]: Start accepts. Automaton has 9690 states and 13833 transitions. Word has length 98 [2019-09-10 08:05:04,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:04,547 INFO L475 AbstractCegarLoop]: Abstraction has 9690 states and 13833 transitions. [2019-09-10 08:05:04,547 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 08:05:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 9690 states and 13833 transitions. [2019-09-10 08:05:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 08:05:04,551 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:04,551 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:05:04,552 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:04,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:04,552 INFO L82 PathProgramCache]: Analyzing trace with hash -255171438, now seen corresponding path program 1 times [2019-09-10 08:05:04,552 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:04,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:04,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:04,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:04,554 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-10 08:05:04,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:04,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 08:05:04,699 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:04,699 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 08:05:04,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 08:05:04,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-09-10 08:05:04,700 INFO L87 Difference]: Start difference. First operand 9690 states and 13833 transitions. Second operand 7 states. [2019-09-10 08:05:04,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:04,888 INFO L93 Difference]: Finished difference Result 18660 states and 26686 transitions. [2019-09-10 08:05:04,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 08:05:04,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-09-10 08:05:04,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:04,924 INFO L225 Difference]: With dead ends: 18660 [2019-09-10 08:05:04,924 INFO L226 Difference]: Without dead ends: 18660 [2019-09-10 08:05:04,924 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-09-10 08:05:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18660 states. [2019-09-10 08:05:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18660 to 13514. [2019-09-10 08:05:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13514 states. [2019-09-10 08:05:05,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13514 states to 13514 states and 19257 transitions. [2019-09-10 08:05:05,290 INFO L78 Accepts]: Start accepts. Automaton has 13514 states and 19257 transitions. Word has length 98 [2019-09-10 08:05:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:05,290 INFO L475 AbstractCegarLoop]: Abstraction has 13514 states and 19257 transitions. [2019-09-10 08:05:05,291 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 08:05:05,291 INFO L276 IsEmpty]: Start isEmpty. Operand 13514 states and 19257 transitions. [2019-09-10 08:05:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 08:05:05,295 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:05,295 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:05:05,295 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:05,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:05,296 INFO L82 PathProgramCache]: Analyzing trace with hash -231426216, now seen corresponding path program 1 times [2019-09-10 08:05:05,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:05,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:05,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:05,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:05,298 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:05,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:05,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:05:05,367 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:05,367 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:05:05,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:05:05,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:05:05,368 INFO L87 Difference]: Start difference. First operand 13514 states and 19257 transitions. Second operand 3 states. [2019-09-10 08:05:05,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:05,403 INFO L93 Difference]: Finished difference Result 9266 states and 13287 transitions. [2019-09-10 08:05:05,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:05:05,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2019-09-10 08:05:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:05,420 INFO L225 Difference]: With dead ends: 9266 [2019-09-10 08:05:05,420 INFO L226 Difference]: Without dead ends: 9266 [2019-09-10 08:05:05,423 INFO L628 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 [2019-09-10 08:05:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9266 states. [2019-09-10 08:05:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9266 to 9264. [2019-09-10 08:05:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9264 states. [2019-09-10 08:05:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9264 states to 9264 states and 13286 transitions. [2019-09-10 08:05:05,569 INFO L78 Accepts]: Start accepts. Automaton has 9264 states and 13286 transitions. Word has length 98 [2019-09-10 08:05:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:05,570 INFO L475 AbstractCegarLoop]: Abstraction has 9264 states and 13286 transitions. [2019-09-10 08:05:05,570 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:05:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 9264 states and 13286 transitions. [2019-09-10 08:05:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-10 08:05:05,574 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:05,574 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:05:05,574 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:05,575 INFO L82 PathProgramCache]: Analyzing trace with hash 544702546, now seen corresponding path program 1 times [2019-09-10 08:05:05,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:05,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:05,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:05,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:05,577 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 08:05:05,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:05,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 08:05:05,742 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:05,743 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 08:05:05,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 08:05:05,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-10 08:05:05,743 INFO L87 Difference]: Start difference. First operand 9264 states and 13286 transitions. Second operand 7 states. [2019-09-10 08:05:06,084 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-09-10 08:05:06,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:06,215 INFO L93 Difference]: Finished difference Result 15834 states and 22747 transitions. [2019-09-10 08:05:06,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 08:05:06,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-09-10 08:05:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:06,244 INFO L225 Difference]: With dead ends: 15834 [2019-09-10 08:05:06,244 INFO L226 Difference]: Without dead ends: 15834 [2019-09-10 08:05:06,245 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-09-10 08:05:06,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15834 states. [2019-09-10 08:05:06,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15834 to 11888. [2019-09-10 08:05:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11888 states. [2019-09-10 08:05:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11888 states to 11888 states and 17030 transitions. [2019-09-10 08:05:06,428 INFO L78 Accepts]: Start accepts. Automaton has 11888 states and 17030 transitions. Word has length 99 [2019-09-10 08:05:06,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:06,428 INFO L475 AbstractCegarLoop]: Abstraction has 11888 states and 17030 transitions. [2019-09-10 08:05:06,429 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 08:05:06,429 INFO L276 IsEmpty]: Start isEmpty. Operand 11888 states and 17030 transitions. [2019-09-10 08:05:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-10 08:05:06,434 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:06,434 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:05:06,435 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:06,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:06,435 INFO L82 PathProgramCache]: Analyzing trace with hash 148431430, now seen corresponding path program 1 times [2019-09-10 08:05:06,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:06,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:06,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:06,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:06,437 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 08:05:06,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:05:06,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 08:05:06,621 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:06,621 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 08:05:06,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 08:05:06,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-09-10 08:05:06,622 INFO L87 Difference]: Start difference. First operand 11888 states and 17030 transitions. Second operand 7 states. [2019-09-10 08:05:06,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:06,793 INFO L93 Difference]: Finished difference Result 18458 states and 26491 transitions. [2019-09-10 08:05:06,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 08:05:06,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-09-10 08:05:06,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:06,826 INFO L225 Difference]: With dead ends: 18458 [2019-09-10 08:05:06,827 INFO L226 Difference]: Without dead ends: 18458 [2019-09-10 08:05:06,827 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-09-10 08:05:06,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18458 states. [2019-09-10 08:05:07,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18458 to 14512. [2019-09-10 08:05:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14512 states. [2019-09-10 08:05:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14512 states to 14512 states and 20774 transitions. [2019-09-10 08:05:07,136 INFO L78 Accepts]: Start accepts. Automaton has 14512 states and 20774 transitions. Word has length 99 [2019-09-10 08:05:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:07,137 INFO L475 AbstractCegarLoop]: Abstraction has 14512 states and 20774 transitions. [2019-09-10 08:05:07,137 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 08:05:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 14512 states and 20774 transitions. [2019-09-10 08:05:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-10 08:05:07,140 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:07,141 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:05:07,141 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:07,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:07,141 INFO L82 PathProgramCache]: Analyzing trace with hash 842687034, now seen corresponding path program 1 times [2019-09-10 08:05:07,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:07,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:07,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:07,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:07,143 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:07,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:05:07,278 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:05:07,279 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 100 with the following transitions: [2019-09-10 08:05:07,282 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [114], [116], [119], [127], [129], [132], [140], [142], [145], [153], [155], [158], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [211], [213], [216], [219], [221], [236], [238], [241], [244], [246], [261], [263], [266], [269], [271], [286], [288], [291], [294], [296], [304], [307], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:05:07,339 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:05:07,339 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:05:07,522 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:05:08,225 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:05:08,228 INFO L272 AbstractInterpreter]: Visited 92 different actions 683 times. Merged at 54 different actions 513 times. Widened at 21 different actions 82 times. Performed 2419 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2419 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 64 fixpoints after 12 different actions. Largest state had 131 variables. [2019-09-10 08:05:08,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:08,234 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:05:08,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:05:08,234 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:05:08,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:08,250 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:05:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:08,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 08:05:08,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:05:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 08:05:08,533 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:05:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 08:05:08,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-09-10 08:05:08,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 7] total 13 [2019-09-10 08:05:08,638 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:05:08,640 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 08:05:08,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 08:05:08,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-09-10 08:05:08,641 INFO L87 Difference]: Start difference. First operand 14512 states and 20774 transitions. Second operand 7 states. [2019-09-10 08:05:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:08,997 INFO L93 Difference]: Finished difference Result 22394 states and 32267 transitions. [2019-09-10 08:05:08,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 08:05:08,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-09-10 08:05:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:09,043 INFO L225 Difference]: With dead ends: 22394 [2019-09-10 08:05:09,043 INFO L226 Difference]: Without dead ends: 22394 [2019-09-10 08:05:09,044 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-09-10 08:05:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22394 states. [2019-09-10 08:05:09,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22394 to 15824. [2019-09-10 08:05:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15824 states. [2019-09-10 08:05:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15824 states to 15824 states and 22678 transitions. [2019-09-10 08:05:09,311 INFO L78 Accepts]: Start accepts. Automaton has 15824 states and 22678 transitions. Word has length 99 [2019-09-10 08:05:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:09,311 INFO L475 AbstractCegarLoop]: Abstraction has 15824 states and 22678 transitions. [2019-09-10 08:05:09,311 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 08:05:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 15824 states and 22678 transitions. [2019-09-10 08:05:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-10 08:05:09,315 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:09,316 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:05:09,316 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:09,316 INFO L82 PathProgramCache]: Analyzing trace with hash -514383113, now seen corresponding path program 1 times [2019-09-10 08:05:09,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:09,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:09,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:09,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:09,318 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:09,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:05:09,559 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:05:09,560 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 101 with the following transitions: [2019-09-10 08:05:09,560 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [114], [116], [119], [127], [129], [132], [140], [142], [145], [153], [155], [158], [166], [168], [171], [174], [178], [180], [183], [184], [186], [188], [193], [195], [198], [211], [213], [216], [219], [221], [236], [238], [241], [244], [246], [261], [263], [266], [269], [271], [286], [288], [291], [294], [296], [311], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:05:09,564 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:05:09,565 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:05:09,590 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:05:10,026 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:05:10,026 INFO L272 AbstractInterpreter]: Visited 92 different actions 755 times. Merged at 53 different actions 568 times. Widened at 20 different actions 72 times. Performed 2686 root evaluator evaluations with a maximum evaluation depth of 7. Performed 2686 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 99 fixpoints after 21 different actions. Largest state had 131 variables. [2019-09-10 08:05:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:10,027 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:05:10,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:05:10,027 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 08:05:10,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:10,048 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:05:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:10,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 08:05:10,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:05:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 08:05:10,308 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:05:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream closed [2019-09-10 08:05:10,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:05:10,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 14 [2019-09-10 08:05:10,398 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:05:10,399 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-10 08:05:10,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-10 08:05:10,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-09-10 08:05:10,400 INFO L87 Difference]: Start difference. First operand 15824 states and 22678 transitions. Second operand 12 states. [2019-09-10 08:05:14,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:05:14,065 INFO L93 Difference]: Finished difference Result 96953 states and 134423 transitions. [2019-09-10 08:05:14,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-10 08:05:14,081 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2019-09-10 08:05:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:05:14,196 INFO L225 Difference]: With dead ends: 96953 [2019-09-10 08:05:14,197 INFO L226 Difference]: Without dead ends: 96953 [2019-09-10 08:05:14,198 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=713, Invalid=2947, Unknown=0, NotChecked=0, Total=3660 [2019-09-10 08:05:14,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96953 states. [2019-09-10 08:05:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96953 to 44929. [2019-09-10 08:05:14,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44929 states. [2019-09-10 08:05:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44929 states to 44929 states and 62321 transitions. [2019-09-10 08:05:15,062 INFO L78 Accepts]: Start accepts. Automaton has 44929 states and 62321 transitions. Word has length 100 [2019-09-10 08:05:15,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:05:15,062 INFO L475 AbstractCegarLoop]: Abstraction has 44929 states and 62321 transitions. [2019-09-10 08:05:15,062 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-10 08:05:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 44929 states and 62321 transitions. [2019-09-10 08:05:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-10 08:05:15,067 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:05:15,067 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:05:15,068 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:05:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:15,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1252193849, now seen corresponding path program 1 times [2019-09-10 08:05:15,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:05:15,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:15,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:15,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:05:15,073 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:05:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:15,338 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:05:15,338 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:05:15,339 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 102 with the following transitions: [2019-09-10 08:05:15,343 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [114], [116], [119], [122], [127], [129], [132], [140], [142], [145], [153], [155], [158], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [211], [213], [216], [219], [221], [236], [238], [241], [244], [246], [261], [263], [266], [269], [271], [279], [282], [288], [291], [294], [296], [304], [307], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:05:15,361 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:05:15,361 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:05:15,415 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:05:16,099 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:05:16,099 INFO L272 AbstractInterpreter]: Visited 94 different actions 685 times. Merged at 56 different actions 518 times. Widened at 20 different actions 89 times. Performed 2338 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2338 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 65 fixpoints after 17 different actions. Largest state had 131 variables. [2019-09-10 08:05:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:05:16,100 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:05:16,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:05:16,100 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:05:16,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:05:16,122 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:05:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:05:16,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 08:05:16,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:05:16,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:05:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:05:16,974 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:05:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 08:05:17,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:05:17,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2019-09-10 08:05:17,511 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:05:17,512 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-10 08:05:17,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-10 08:05:17,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2019-09-10 08:05:17,513 INFO L87 Difference]: Start difference. First operand 44929 states and 62321 transitions. Second operand 19 states. [2019-09-10 08:05:18,284 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-10 08:05:18,591 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 08:05:19,022 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-10 08:05:19,358 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 08:05:19,748 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 08:05:20,444 WARN L188 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 08:05:20,819 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 08:05:21,689 WARN L188 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 08:05:22,100 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 08:05:22,448 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 08:05:22,857 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 08:05:23,228 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 08:05:23,694 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-10 08:05:24,089 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 08:05:24,487 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 08:05:24,908 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-10 08:05:25,327 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 08:05:25,808 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-10 08:05:26,213 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-10 08:05:26,557 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 08:05:26,853 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-10 08:05:27,251 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-10 08:05:27,643 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 08:05:27,994 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-10 08:05:28,390 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 08:05:28,837 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 08:05:29,227 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 08:05:29,699 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 08:05:30,046 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 08:05:30,519 WARN L188 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-10 08:05:30,924 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-10 08:05:31,332 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 08:05:31,765 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 08:05:32,417 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 08:05:32,786 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 08:05:34,399 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 08:05:34,756 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 08:05:35,158 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 08:05:35,546 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 08:05:35,915 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 08:05:36,281 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 08:05:36,630 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 08:05:36,954 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 08:05:37,258 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 08:05:37,740 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-10 08:05:38,147 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-10 08:05:38,524 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-10 08:05:38,870 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-10 08:05:39,276 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 08:05:39,581 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-10 08:05:39,880 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 08:05:40,196 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-10 08:05:40,520 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 08:05:40,874 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 08:05:41,315 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 08:05:41,710 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 08:05:42,094 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 08:05:42,565 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:05:43,053 WARN L188 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:05:43,349 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 08:05:43,666 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:05:44,006 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 08:05:44,332 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:05:44,752 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 08:05:45,137 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 08:05:45,523 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 08:05:45,903 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 08:05:46,466 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 08:05:46,888 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 08:05:47,276 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-10 08:05:47,665 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-10 08:05:48,114 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 08:05:48,412 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 08:05:48,773 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:05:49,180 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:05:49,534 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 08:05:49,899 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:05:50,365 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 08:05:50,779 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:05:51,267 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2019-09-10 08:05:51,630 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-10 08:05:52,158 WARN L188 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-10 08:05:52,552 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:05:53,030 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2019-09-10 08:05:53,417 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-10 08:05:53,855 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:05:54,234 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:05:54,624 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 08:05:55,041 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 08:05:55,422 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 08:05:55,827 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-10 08:05:56,802 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 08:05:57,168 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:05:57,602 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 08:05:58,002 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 08:05:58,332 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 08:05:58,761 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2019-09-10 08:05:59,304 WARN L188 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-10 08:05:59,704 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:06:00,051 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:06:00,435 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 08:06:00,758 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:06:01,086 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 08:06:01,468 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:06:01,831 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2019-09-10 08:06:02,240 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-10 08:06:02,706 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2019-09-10 08:06:03,067 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:06:03,525 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:06:03,872 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:06:04,342 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2019-09-10 08:06:05,494 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 08:06:05,816 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:06:06,149 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:06:06,496 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:06:06,785 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:06:07,119 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 08:06:07,435 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:06:07,749 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 08:06:08,080 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 08:06:08,442 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 08:06:08,787 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-10 08:06:09,137 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-10 08:06:09,428 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:06:09,765 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:06:10,075 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:06:10,421 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:06:10,747 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:06:11,033 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:06:11,290 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:06:11,510 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:06:11,776 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 08:06:12,009 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:06:12,287 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:06:12,578 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:06:12,848 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:06:13,085 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:06:13,353 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 08:06:13,608 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:06:13,920 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:06:14,171 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:06:14,389 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:06:14,650 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-10 08:06:14,880 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:06:15,107 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 08:06:15,316 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:06:15,565 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 08:06:15,801 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:06:16,080 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2019-09-10 08:06:16,318 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 08:06:16,541 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:06:16,772 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 08:06:17,000 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:06:17,456 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 08:06:17,706 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:06:18,079 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 08:06:18,463 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 08:06:18,826 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-10 08:06:19,081 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:06:19,380 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:06:19,732 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:06:19,992 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 08:06:20,213 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:06:20,531 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 08:06:20,960 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-10 08:06:21,204 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:06:21,660 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 08:06:21,871 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:06:22,205 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:06:22,734 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:06:22,963 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:06:23,183 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:06:23,544 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:06:23,869 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-10 08:06:24,180 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:06:24,572 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:06:24,980 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:06:25,351 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:06:25,587 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-10 08:06:26,186 WARN L188 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 08:06:26,537 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 08:06:26,837 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:06:27,148 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:06:27,386 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:06:27,727 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-10 08:06:28,039 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:06:28,301 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-10 08:06:28,528 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:06:28,887 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2019-09-10 08:06:29,245 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-10 08:06:29,559 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2019-09-10 08:06:29,927 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-10 08:06:30,302 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:06:30,644 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 08:06:30,945 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:06:31,330 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:06:31,566 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:06:31,825 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:06:32,154 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:06:32,483 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 08:06:32,780 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:06:33,138 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-10 08:06:33,481 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-10 08:06:33,896 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2019-09-10 08:06:34,311 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2019-09-10 08:06:34,555 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-09-10 08:06:34,804 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 08:06:35,148 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:06:35,396 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:06:35,783 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 08:06:36,130 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 08:06:36,485 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:06:36,852 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:06:37,113 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-10 08:06:37,609 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 08:06:37,979 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-10 08:06:38,359 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:06:38,743 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:06:39,098 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:06:39,328 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:06:39,573 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:06:39,990 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:06:40,227 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:06:41,231 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 08:06:41,622 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 08:06:41,968 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 08:06:42,285 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 08:06:42,598 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:06:43,041 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 08:06:43,394 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:06:43,737 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 08:06:44,092 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 08:06:44,534 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 08:06:44,871 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 08:06:45,241 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 08:06:45,536 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:06:45,972 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:06:46,312 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:06:46,742 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:06:47,153 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 08:06:47,350 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 08:06:47,625 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:06:47,930 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 08:06:48,168 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 08:06:48,448 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-10 08:06:48,660 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 08:06:48,916 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:06:49,104 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 08:06:49,358 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:06:50,024 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:06:50,302 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 08:06:50,589 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 08:06:50,988 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 08:06:51,413 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:06:51,671 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:06:51,991 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-10 08:06:52,159 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-10 08:06:52,337 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 08:06:52,640 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:06:52,925 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-10 08:06:53,239 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 08:06:53,482 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 08:06:53,728 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:06:54,033 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 08:06:54,295 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:06:54,519 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 08:06:54,690 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 08:06:54,974 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:06:55,397 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:06:55,817 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:06:55,993 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-10 08:06:56,195 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-10 08:06:56,771 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:06:57,053 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 08:06:57,300 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 08:06:57,579 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:06:57,838 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-10 08:06:58,419 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:06:58,995 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:06:59,237 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:06:59,413 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-10 08:06:59,650 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 08:06:59,887 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:07:00,205 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 08:07:00,427 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:07:00,813 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:07:01,490 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 08:07:01,816 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-10 08:07:02,076 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:07:02,325 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:07:02,962 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:07:03,253 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 08:07:04,024 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:07:04,295 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-10 08:07:04,569 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-10 08:07:04,837 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 08:07:05,103 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-10 08:07:05,327 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:07:05,555 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 08:07:05,784 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:07:06,055 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 08:07:06,317 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2019-09-10 08:07:06,594 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 08:07:06,823 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:07:07,090 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 08:07:07,355 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:07:07,597 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:07:07,899 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-10 08:07:08,804 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:07:09,058 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:07:09,268 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:07:09,563 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:07:10,036 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-10 08:07:10,435 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 08:07:10,608 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-10 08:07:10,898 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 08:07:11,333 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 08:07:11,522 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:07:11,811 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:07:12,239 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:07:12,430 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-10 08:07:12,719 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 08:07:13,233 WARN L188 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-10 08:07:13,460 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 08:07:13,862 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:07:14,256 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:07:14,685 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 08:07:15,108 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:07:15,564 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-10 08:07:16,008 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 08:07:16,370 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 08:07:16,834 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:07:17,224 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:07:17,563 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:07:17,917 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:07:18,269 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:07:18,606 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:07:18,942 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-10 08:07:19,297 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-10 08:07:19,649 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:07:20,026 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:07:20,443 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 08:07:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:07:20,593 INFO L93 Difference]: Finished difference Result 501583 states and 689887 transitions. [2019-09-10 08:07:20,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2019-09-10 08:07:20,594 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2019-09-10 08:07:20,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:07:21,323 INFO L225 Difference]: With dead ends: 501583 [2019-09-10 08:07:21,323 INFO L226 Difference]: Without dead ends: 501583 [2019-09-10 08:07:21,344 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76052 ImplicationChecksByTransitivity, 109.3s TimeCoverageRelationStatistics Valid=21541, Invalid=138059, Unknown=0, NotChecked=0, Total=159600 [2019-09-10 08:07:21,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501583 states. [2019-09-10 08:07:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501583 to 99484. [2019-09-10 08:07:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99484 states. [2019-09-10 08:07:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99484 states to 99484 states and 136398 transitions. [2019-09-10 08:07:27,944 INFO L78 Accepts]: Start accepts. Automaton has 99484 states and 136398 transitions. Word has length 101 [2019-09-10 08:07:27,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:07:27,944 INFO L475 AbstractCegarLoop]: Abstraction has 99484 states and 136398 transitions. [2019-09-10 08:07:27,945 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-10 08:07:27,945 INFO L276 IsEmpty]: Start isEmpty. Operand 99484 states and 136398 transitions. [2019-09-10 08:07:27,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-10 08:07:27,949 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:07:27,949 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:07:27,949 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:07:27,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:07:27,950 INFO L82 PathProgramCache]: Analyzing trace with hash -970174889, now seen corresponding path program 1 times [2019-09-10 08:07:27,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:07:27,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:27,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:07:27,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:27,953 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:07:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:07:28,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:28,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:07:28,161 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:07:28,162 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2019-09-10 08:07:28,164 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [127], [129], [132], [135], [140], [142], [145], [153], [155], [158], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [211], [213], [216], [219], [221], [236], [238], [241], [244], [246], [254], [257], [263], [266], [269], [271], [279], [282], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:07:28,168 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:07:28,169 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:07:28,206 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:07:28,712 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:07:28,712 INFO L272 AbstractInterpreter]: Visited 95 different actions 791 times. Merged at 57 different actions 613 times. Widened at 17 different actions 92 times. Performed 2630 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2630 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 75 fixpoints after 18 different actions. Largest state had 131 variables. [2019-09-10 08:07:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:07:28,713 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:07:28,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:07:28,713 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:07:28,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:07:28,742 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:07:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:07:28,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-10 08:07:28,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:07:28,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:07:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:29,237 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:07:29,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:07:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:29,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:07:29,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 08:07:29,536 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:07:29,538 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 08:07:29,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 08:07:29,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-09-10 08:07:29,539 INFO L87 Difference]: Start difference. First operand 99484 states and 136398 transitions. Second operand 17 states. [2019-09-10 08:07:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:07:36,932 INFO L93 Difference]: Finished difference Result 522328 states and 708900 transitions. [2019-09-10 08:07:36,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-10 08:07:36,932 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2019-09-10 08:07:36,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:07:37,582 INFO L225 Difference]: With dead ends: 522328 [2019-09-10 08:07:37,582 INFO L226 Difference]: Without dead ends: 522328 [2019-09-10 08:07:37,582 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=808, Invalid=2272, Unknown=0, NotChecked=0, Total=3080 [2019-09-10 08:07:37,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522328 states. [2019-09-10 08:07:41,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522328 to 227535. [2019-09-10 08:07:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227535 states. [2019-09-10 08:07:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227535 states to 227535 states and 312074 transitions. [2019-09-10 08:07:41,291 INFO L78 Accepts]: Start accepts. Automaton has 227535 states and 312074 transitions. Word has length 102 [2019-09-10 08:07:41,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:07:41,291 INFO L475 AbstractCegarLoop]: Abstraction has 227535 states and 312074 transitions. [2019-09-10 08:07:41,291 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 08:07:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 227535 states and 312074 transitions. [2019-09-10 08:07:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-10 08:07:41,301 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:07:41,301 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:07:41,301 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:07:41,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:07:41,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1067777053, now seen corresponding path program 1 times [2019-09-10 08:07:41,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:07:41,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:41,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:07:41,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:41,303 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:07:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:07:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:41,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:07:41,530 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:07:41,530 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2019-09-10 08:07:41,530 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [127], [129], [132], [135], [140], [142], [145], [148], [153], [155], [158], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [211], [213], [216], [219], [221], [229], [232], [238], [241], [244], [246], [254], [257], [263], [266], [269], [271], [286], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:07:41,532 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:07:41,532 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:07:41,552 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:07:42,051 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:07:42,051 INFO L272 AbstractInterpreter]: Visited 95 different actions 764 times. Merged at 57 different actions 590 times. Widened at 17 different actions 77 times. Performed 2578 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2578 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 67 fixpoints after 15 different actions. Largest state had 131 variables. [2019-09-10 08:07:42,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:07:42,052 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:07:42,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:07:42,052 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 08:07:42,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:07:42,075 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:07:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:07:42,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 08:07:42,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:07:42,275 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:07:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:42,536 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:07:42,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:07:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:42,769 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:07:42,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 08:07:42,769 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:07:42,770 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 08:07:42,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 08:07:42,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2019-09-10 08:07:42,770 INFO L87 Difference]: Start difference. First operand 227535 states and 312074 transitions. Second operand 17 states. [2019-09-10 08:07:48,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:07:48,812 INFO L93 Difference]: Finished difference Result 986789 states and 1346463 transitions. [2019-09-10 08:07:48,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-10 08:07:48,815 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2019-09-10 08:07:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:07:49,964 INFO L225 Difference]: With dead ends: 986789 [2019-09-10 08:07:49,964 INFO L226 Difference]: Without dead ends: 986789 [2019-09-10 08:07:49,965 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=538, Invalid=1624, Unknown=0, NotChecked=0, Total=2162 [2019-09-10 08:07:50,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986789 states. [2019-09-10 08:08:04,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986789 to 544177. [2019-09-10 08:08:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544177 states. [2019-09-10 08:08:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544177 states to 544177 states and 743017 transitions. [2019-09-10 08:08:04,874 INFO L78 Accepts]: Start accepts. Automaton has 544177 states and 743017 transitions. Word has length 102 [2019-09-10 08:08:04,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:08:04,874 INFO L475 AbstractCegarLoop]: Abstraction has 544177 states and 743017 transitions. [2019-09-10 08:08:04,874 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 08:08:04,874 INFO L276 IsEmpty]: Start isEmpty. Operand 544177 states and 743017 transitions. [2019-09-10 08:08:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 08:08:04,884 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:08:04,884 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:08:04,884 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:08:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:08:04,885 INFO L82 PathProgramCache]: Analyzing trace with hash -3469356, now seen corresponding path program 1 times [2019-09-10 08:08:04,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:08:04,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:08:04,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:08:04,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:08:04,886 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:08:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:08:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-10 08:08:04,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:08:04,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:08:04,924 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:08:04,925 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:08:04,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:08:04,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:08:04,925 INFO L87 Difference]: Start difference. First operand 544177 states and 743017 transitions. Second operand 3 states. [2019-09-10 08:08:11,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:08:11,839 INFO L93 Difference]: Finished difference Result 459255 states and 622724 transitions. [2019-09-10 08:08:11,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:08:11,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-09-10 08:08:11,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:08:12,414 INFO L225 Difference]: With dead ends: 459255 [2019-09-10 08:08:12,414 INFO L226 Difference]: Without dead ends: 459255 [2019-09-10 08:08:12,415 INFO L628 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 [2019-09-10 08:08:12,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459255 states. [2019-09-10 08:08:20,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459255 to 459255. [2019-09-10 08:08:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459255 states. [2019-09-10 08:08:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459255 states to 459255 states and 622724 transitions. [2019-09-10 08:08:21,199 INFO L78 Accepts]: Start accepts. Automaton has 459255 states and 622724 transitions. Word has length 103 [2019-09-10 08:08:21,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:08:21,200 INFO L475 AbstractCegarLoop]: Abstraction has 459255 states and 622724 transitions. [2019-09-10 08:08:21,200 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:08:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 459255 states and 622724 transitions. [2019-09-10 08:08:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 08:08:21,208 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:08:21,208 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:08:21,208 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:08:21,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:08:21,209 INFO L82 PathProgramCache]: Analyzing trace with hash -913984314, now seen corresponding path program 1 times [2019-09-10 08:08:21,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:08:21,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:08:21,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:08:21,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:08:21,210 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:08:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:08:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:08:22,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:08:22,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:08:22,345 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:08:22,345 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:08:22,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:08:22,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:08:22,346 INFO L87 Difference]: Start difference. First operand 459255 states and 622724 transitions. Second operand 3 states. [2019-09-10 08:08:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:08:22,888 INFO L93 Difference]: Finished difference Result 265591 states and 354943 transitions. [2019-09-10 08:08:22,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:08:22,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-09-10 08:08:22,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:08:23,153 INFO L225 Difference]: With dead ends: 265591 [2019-09-10 08:08:23,153 INFO L226 Difference]: Without dead ends: 265591 [2019-09-10 08:08:23,153 INFO L628 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 [2019-09-10 08:08:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265591 states. [2019-09-10 08:08:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265591 to 265589. [2019-09-10 08:08:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265589 states. [2019-09-10 08:08:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265589 states to 265589 states and 354942 transitions. [2019-09-10 08:08:31,319 INFO L78 Accepts]: Start accepts. Automaton has 265589 states and 354942 transitions. Word has length 103 [2019-09-10 08:08:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:08:31,320 INFO L475 AbstractCegarLoop]: Abstraction has 265589 states and 354942 transitions. [2019-09-10 08:08:31,320 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:08:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 265589 states and 354942 transitions. [2019-09-10 08:08:31,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 08:08:31,326 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:08:31,327 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:08:31,327 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:08:31,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:08:31,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1552317475, now seen corresponding path program 1 times [2019-09-10 08:08:31,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:08:31,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:08:31,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:08:31,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:08:31,329 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:08:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:08:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:08:31,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:08:31,531 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:08:31,531 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 104 with the following transitions: [2019-09-10 08:08:31,531 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [127], [129], [132], [135], [138], [140], [142], [145], [148], [153], [155], [158], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [211], [213], [216], [219], [221], [229], [232], [238], [241], [244], [246], [263], [266], [269], [271], [279], [282], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:08:31,533 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:08:31,533 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:08:31,558 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:08:32,086 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:08:32,087 INFO L272 AbstractInterpreter]: Visited 96 different actions 938 times. Merged at 58 different actions 749 times. Widened at 18 different actions 119 times. Performed 3020 root evaluator evaluations with a maximum evaluation depth of 5. Performed 3020 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 88 fixpoints after 20 different actions. Largest state had 131 variables. [2019-09-10 08:08:32,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:08:32,087 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:08:32,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:08:32,087 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:08:32,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:08:32,104 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:08:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:08:32,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 08:08:32,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:08:32,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:08:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:08:32,551 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:08:32,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:08:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:08:32,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:08:32,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 08:08:32,800 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:08:32,800 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 08:08:32,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 08:08:32,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2019-09-10 08:08:32,801 INFO L87 Difference]: Start difference. First operand 265589 states and 354942 transitions. Second operand 17 states. [2019-09-10 08:08:33,389 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2019-09-10 08:08:34,363 WARN L188 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-09-10 08:08:35,199 WARN L188 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2019-09-10 08:08:37,104 WARN L188 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2019-09-10 08:08:37,733 WARN L188 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2019-09-10 08:08:51,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:08:51,517 INFO L93 Difference]: Finished difference Result 1629722 states and 2156392 transitions. [2019-09-10 08:08:51,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-10 08:08:51,517 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2019-09-10 08:08:51,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:08:53,583 INFO L225 Difference]: With dead ends: 1629722 [2019-09-10 08:08:53,583 INFO L226 Difference]: Without dead ends: 1629722 [2019-09-10 08:08:53,583 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1016, Invalid=2890, Unknown=0, NotChecked=0, Total=3906 [2019-09-10 08:08:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629722 states. [2019-09-10 08:09:10,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629722 to 605314. [2019-09-10 08:09:10,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605314 states. [2019-09-10 08:09:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605314 states to 605314 states and 806260 transitions. [2019-09-10 08:09:11,203 INFO L78 Accepts]: Start accepts. Automaton has 605314 states and 806260 transitions. Word has length 103 [2019-09-10 08:09:11,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:09:11,203 INFO L475 AbstractCegarLoop]: Abstraction has 605314 states and 806260 transitions. [2019-09-10 08:09:11,203 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 08:09:11,203 INFO L276 IsEmpty]: Start isEmpty. Operand 605314 states and 806260 transitions. [2019-09-10 08:09:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 08:09:11,212 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:09:11,212 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:09:11,212 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:09:11,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:09:11,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1655223693, now seen corresponding path program 1 times [2019-09-10 08:09:11,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:09:11,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:11,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:09:11,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:11,214 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:09:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:09:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:09:11,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:09:11,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:09:11,268 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:09:11,269 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:09:11,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:09:11,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:09:11,269 INFO L87 Difference]: Start difference. First operand 605314 states and 806260 transitions. Second operand 3 states. [2019-09-10 08:09:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:09:13,717 INFO L93 Difference]: Finished difference Result 353099 states and 462625 transitions. [2019-09-10 08:09:13,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:09:13,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-09-10 08:09:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:09:14,153 INFO L225 Difference]: With dead ends: 353099 [2019-09-10 08:09:14,154 INFO L226 Difference]: Without dead ends: 353099 [2019-09-10 08:09:14,154 INFO L628 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 [2019-09-10 08:09:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353099 states. [2019-09-10 08:09:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353099 to 350745. [2019-09-10 08:09:24,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350745 states. [2019-09-10 08:09:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350745 states to 350745 states and 460272 transitions. [2019-09-10 08:09:24,668 INFO L78 Accepts]: Start accepts. Automaton has 350745 states and 460272 transitions. Word has length 104 [2019-09-10 08:09:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:09:24,669 INFO L475 AbstractCegarLoop]: Abstraction has 350745 states and 460272 transitions. [2019-09-10 08:09:24,669 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:09:24,669 INFO L276 IsEmpty]: Start isEmpty. Operand 350745 states and 460272 transitions. [2019-09-10 08:09:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 08:09:24,674 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:09:24,674 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:09:24,674 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:09:24,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:09:24,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2067985229, now seen corresponding path program 1 times [2019-09-10 08:09:24,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:09:24,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:24,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:09:24,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:24,676 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:09:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:09:25,917 WARN L188 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2019-09-10 08:09:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:09:26,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:09:26,672 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:09:26,672 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 105 with the following transitions: [2019-09-10 08:09:26,672 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [127], [129], [132], [135], [138], [140], [142], [145], [148], [153], [155], [158], [161], [164], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [213], [216], [219], [221], [229], [232], [238], [241], [244], [246], [263], [266], [269], [271], [279], [282], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:09:26,674 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:09:26,674 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:09:26,691 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:09:26,985 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:09:26,985 INFO L272 AbstractInterpreter]: Visited 97 different actions 619 times. Merged at 59 different actions 464 times. Widened at 15 different actions 45 times. Performed 2066 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2066 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 52 fixpoints after 13 different actions. Largest state had 131 variables. [2019-09-10 08:09:26,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:09:26,986 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:09:26,986 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:09:26,986 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 08:09:27,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:09:27,003 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:09:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:09:27,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 08:09:27,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:09:27,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:09:28,275 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:09:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:09:28,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:09:28,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 37 [2019-09-10 08:09:28,805 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:09:28,806 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 08:09:28,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 08:09:28,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2019-09-10 08:09:28,807 INFO L87 Difference]: Start difference. First operand 350745 states and 460272 transitions. Second operand 28 states. [2019-09-10 08:09:31,227 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-10 08:09:31,527 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2019-09-10 08:09:31,926 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2019-09-10 08:09:35,470 WARN L188 SmtUtils]: Spent 3.41 s on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2019-09-10 08:09:35,931 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 97 [2019-09-10 08:09:36,241 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2019-09-10 08:09:36,393 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2019-09-10 08:09:36,810 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2019-09-10 08:09:37,048 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:09:37,402 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2019-09-10 08:09:37,665 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 08:09:37,938 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2019-09-10 08:09:38,377 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-09-10 08:09:38,722 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-10 08:09:39,004 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 08:09:39,247 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-09-10 08:09:39,637 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2019-09-10 08:09:39,916 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:09:40,266 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:09:40,570 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:09:41,049 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 08:09:41,288 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:09:41,501 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:09:41,746 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:09:41,954 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 08:09:42,291 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:09:42,600 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:09:42,919 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-10 08:09:43,220 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2019-09-10 08:09:43,744 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:09:43,979 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:09:44,622 WARN L188 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 08:09:44,898 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 08:09:45,228 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 08:09:45,449 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 08:09:45,829 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-10 08:09:46,189 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 08:09:46,538 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 08:09:46,980 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-10 08:09:47,425 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2019-09-10 08:09:47,806 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 08:09:48,132 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 08:09:48,495 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2019-09-10 08:09:48,722 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:09:49,057 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-10 08:09:49,288 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 08:09:49,600 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 08:09:49,814 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 08:09:50,145 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 08:09:50,621 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-10 08:09:50,915 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 08:09:51,368 WARN L188 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2019-09-10 08:09:51,604 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:09:51,988 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:09:52,344 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-10 08:09:52,720 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2019-09-10 08:09:53,255 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-10 08:09:53,752 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 08:09:54,122 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2019-09-10 08:09:54,367 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-10 08:09:54,768 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-09-10 08:09:55,044 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 08:09:55,392 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-09-10 08:09:55,632 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2019-09-10 08:09:56,122 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-10 08:09:56,713 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 92 [2019-09-10 08:09:57,049 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-09-10 08:09:57,580 WARN L188 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2019-09-10 08:09:57,861 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2019-09-10 08:09:58,145 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2019-09-10 08:09:58,547 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 08:09:58,925 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 08:09:59,529 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2019-09-10 08:09:59,834 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 08:10:00,464 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 08:10:00,839 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 08:10:01,239 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 08:10:01,720 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2019-09-10 08:10:02,139 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-10 08:10:02,320 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 08:10:02,861 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-10 08:10:03,135 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 08:10:03,400 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 08:10:03,796 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-10 08:10:04,160 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2019-09-10 08:10:04,674 WARN L188 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2019-09-10 08:10:05,218 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 08:10:05,386 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-09-10 08:10:05,641 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-10 08:10:05,929 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2019-09-10 08:10:06,786 WARN L188 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 107 [2019-09-10 08:10:07,226 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 98 [2019-09-10 08:10:07,742 WARN L188 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2019-09-10 08:10:08,097 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-10 08:10:08,540 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 96 [2019-09-10 08:10:09,231 WARN L188 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 109 [2019-09-10 08:10:09,790 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 102 [2019-09-10 08:10:10,241 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2019-09-10 08:10:10,508 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:10:10,981 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 99 [2019-09-10 08:10:11,449 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2019-09-10 08:10:12,322 WARN L188 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 113 [2019-09-10 08:10:12,813 WARN L188 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 104 [2019-09-10 08:10:13,402 WARN L188 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 105 [2019-09-10 08:10:13,784 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 86 [2019-09-10 08:10:14,287 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 102 [2019-09-10 08:10:15,066 WARN L188 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 115 [2019-09-10 08:10:15,727 WARN L188 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 108 [2019-09-10 08:10:16,292 WARN L188 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 109 [2019-09-10 08:10:16,655 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2019-09-10 08:10:17,228 WARN L188 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2019-09-10 08:10:17,922 WARN L188 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2019-09-10 08:10:18,726 WARN L188 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 114 [2019-09-10 08:10:19,137 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2019-09-10 08:10:19,319 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 08:10:20,125 WARN L188 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 113 [2019-09-10 08:10:20,565 WARN L188 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 104 [2019-09-10 08:10:21,036 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 102 [2019-09-10 08:10:21,594 WARN L188 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 117 [2019-09-10 08:10:22,132 WARN L188 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2019-09-10 08:10:22,462 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 08:10:22,656 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 08:10:23,426 WARN L188 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 115 [2019-09-10 08:10:23,972 WARN L188 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 107 [2019-09-10 08:10:24,310 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 08:10:24,730 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 98 [2019-09-10 08:10:25,218 WARN L188 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2019-09-10 08:10:25,651 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 96 [2019-09-10 08:10:25,875 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 08:10:26,336 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2019-09-10 08:10:26,850 WARN L188 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2019-09-10 08:10:27,189 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 08:10:27,431 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-10 08:10:28,032 WARN L188 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 109 [2019-09-10 08:10:28,364 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-10 08:10:29,086 WARN L188 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 125 [2019-09-10 08:10:29,667 WARN L188 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2019-09-10 08:10:30,112 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 99 [2019-09-10 08:10:30,349 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 08:10:30,873 WARN L188 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 117 [2019-09-10 08:10:31,304 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2019-09-10 08:10:31,521 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-10 08:10:31,786 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 08:10:32,126 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2019-09-10 08:10:32,561 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 08:10:33,508 WARN L188 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 127 [2019-09-10 08:10:34,466 WARN L188 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 123 [2019-09-10 08:10:35,053 WARN L188 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 107 [2019-09-10 08:10:35,385 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:10:36,036 WARN L188 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 114 [2019-09-10 08:10:36,466 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2019-09-10 08:10:37,156 WARN L188 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 114 [2019-09-10 08:10:37,588 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2019-09-10 08:10:37,792 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-10 08:10:38,191 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 08:10:39,210 WARN L188 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 125 [2019-09-10 08:10:39,841 WARN L188 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 109 [2019-09-10 08:10:40,215 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2019-09-10 08:10:41,036 WARN L188 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 117 [2019-09-10 08:10:41,524 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2019-09-10 08:10:42,155 WARN L188 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 108 [2019-09-10 08:10:42,903 WARN L188 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 116 [2019-09-10 08:10:43,490 WARN L188 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 108 [2019-09-10 08:10:44,396 WARN L188 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 119 [2019-09-10 08:10:44,947 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2019-09-10 08:10:45,679 WARN L188 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2019-09-10 08:10:46,549 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2019-09-10 08:10:46,956 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2019-09-10 08:10:47,227 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2019-09-10 08:10:47,699 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2019-09-10 08:10:48,049 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:10:48,565 WARN L188 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2019-09-10 08:10:48,793 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-10 08:10:49,153 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-09-10 08:10:49,721 WARN L188 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 101 [2019-09-10 08:10:50,211 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:10:50,589 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2019-09-10 08:10:50,888 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-10 08:10:51,207 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2019-09-10 08:10:51,506 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2019-09-10 08:10:51,897 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2019-09-10 08:10:52,443 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2019-09-10 08:10:52,881 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2019-09-10 08:10:53,186 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 08:10:53,464 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 08:10:53,762 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-09-10 08:10:54,160 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-10 08:10:54,622 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-10 08:10:54,937 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2019-09-10 08:10:55,351 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2019-09-10 08:10:56,006 WARN L188 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2019-09-10 08:10:56,345 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 08:10:56,714 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2019-09-10 08:10:57,243 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2019-09-10 08:10:57,546 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-10 08:10:57,826 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-09-10 08:10:58,012 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:10:58,553 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2019-09-10 08:10:59,001 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 08:10:59,511 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 08:10:59,789 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2019-09-10 08:11:00,145 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2019-09-10 08:11:00,577 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-10 08:11:01,178 WARN L188 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2019-09-10 08:11:01,533 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-10 08:11:01,971 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:11:02,421 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 08:11:02,749 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 08:11:03,434 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 08:11:03,777 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2019-09-10 08:11:04,214 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-10 08:11:04,512 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:11:04,921 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-10 08:11:05,202 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-09-10 08:11:05,553 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-10 08:11:05,972 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2019-09-10 08:11:06,531 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2019-09-10 08:11:06,860 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-10 08:11:07,349 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:11:07,794 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-10 08:11:07,986 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 08:11:08,279 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2019-09-10 08:11:08,738 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 08:11:09,006 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2019-09-10 08:11:09,373 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:11:09,612 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 08:11:09,949 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-10 08:11:10,398 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 08:11:11,058 WARN L188 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 95 [2019-09-10 08:11:11,456 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 08:11:12,005 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2019-09-10 08:11:12,330 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:11:12,599 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2019-09-10 08:11:13,259 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-09-10 08:11:13,515 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2019-09-10 08:11:13,864 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2019-09-10 08:11:14,294 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 08:11:14,964 WARN L188 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2019-09-10 08:11:15,287 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2019-09-10 08:11:15,553 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 08:11:16,057 WARN L188 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2019-09-10 08:11:16,705 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:11:17,692 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-10 08:11:18,303 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-10 08:11:18,537 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 08:11:18,826 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:11:19,051 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 08:11:19,375 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-10 08:11:19,713 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 08:11:19,976 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-10 08:11:20,421 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-09-10 08:11:20,835 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:11:21,061 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-10 08:11:21,290 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2019-09-10 08:11:21,529 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2019-09-10 08:11:21,877 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 08:11:22,232 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-10 08:11:22,830 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2019-09-10 08:11:23,139 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2019-09-10 08:11:23,493 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 08:11:23,786 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 08:11:24,107 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2019-09-10 08:11:24,574 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2019-09-10 08:11:25,080 WARN L188 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2019-09-10 08:11:25,529 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2019-09-10 08:11:25,799 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:11:26,059 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2019-09-10 08:11:26,225 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2019-09-10 08:11:26,386 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 08:11:27,185 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2019-09-10 08:11:27,512 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:11:27,919 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 08:11:28,235 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 08:11:28,563 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 08:11:29,107 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2019-09-10 08:11:29,572 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2019-09-10 08:11:30,056 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 95 [2019-09-10 08:11:30,430 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2019-09-10 08:11:30,685 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 08:11:31,040 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-10 08:11:31,519 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-10 08:11:31,795 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 08:11:32,063 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-09-10 08:11:32,408 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-10 08:11:32,773 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-10 08:11:33,352 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-10 08:11:33,900 WARN L188 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 08:11:34,236 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-10 08:11:34,633 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2019-09-10 08:11:35,101 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2019-09-10 08:11:35,414 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 08:11:35,913 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2019-09-10 08:11:36,422 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:11:36,962 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2019-09-10 08:11:37,486 WARN L188 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2019-09-10 08:11:38,242 WARN L188 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 99 [2019-09-10 08:11:38,952 WARN L188 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 103 [2019-09-10 08:11:39,717 WARN L188 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2019-09-10 08:11:40,225 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2019-09-10 08:11:41,008 WARN L188 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 101 [2019-09-10 08:11:41,784 WARN L188 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 105 [2019-09-10 08:11:42,356 WARN L188 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 94 [2019-09-10 08:11:43,012 WARN L188 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2019-09-10 08:11:43,962 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 08:11:44,254 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 08:11:44,586 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2019-09-10 08:11:44,936 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:11:45,314 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2019-09-10 08:11:45,604 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 08:11:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:11:46,277 INFO L93 Difference]: Finished difference Result 591189 states and 774661 transitions. [2019-09-10 08:11:46,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 369 states. [2019-09-10 08:11:46,278 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 104 [2019-09-10 08:11:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:11:47,802 INFO L225 Difference]: With dead ends: 591189 [2019-09-10 08:11:47,802 INFO L226 Difference]: Without dead ends: 591189 [2019-09-10 08:11:47,810 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 182 SyntacticMatches, 10 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65728 ImplicationChecksByTransitivity, 125.3s TimeCoverageRelationStatistics Valid=18715, Invalid=139291, Unknown=0, NotChecked=0, Total=158006 [2019-09-10 08:11:48,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591189 states. [2019-09-10 08:11:53,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591189 to 340608. [2019-09-10 08:11:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340608 states. [2019-09-10 08:11:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340608 states to 340608 states and 450535 transitions. [2019-09-10 08:11:53,842 INFO L78 Accepts]: Start accepts. Automaton has 340608 states and 450535 transitions. Word has length 104 [2019-09-10 08:11:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:11:53,842 INFO L475 AbstractCegarLoop]: Abstraction has 340608 states and 450535 transitions. [2019-09-10 08:11:53,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 08:11:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 340608 states and 450535 transitions. [2019-09-10 08:11:53,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 08:11:53,847 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:11:53,847 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:11:53,847 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:11:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:11:53,848 INFO L82 PathProgramCache]: Analyzing trace with hash 738884528, now seen corresponding path program 1 times [2019-09-10 08:11:53,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:11:53,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:11:53,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:11:53,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:11:53,849 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:11:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:11:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:11:53,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:11:53,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:11:53,904 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:11:53,904 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:11:53,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:11:53,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:11:53,905 INFO L87 Difference]: Start difference. First operand 340608 states and 450535 transitions. Second operand 3 states. [2019-09-10 08:11:54,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:11:54,408 INFO L93 Difference]: Finished difference Result 199105 states and 260239 transitions. [2019-09-10 08:11:54,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:11:54,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-09-10 08:11:54,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:11:54,621 INFO L225 Difference]: With dead ends: 199105 [2019-09-10 08:11:54,621 INFO L226 Difference]: Without dead ends: 199105 [2019-09-10 08:11:54,621 INFO L628 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 [2019-09-10 08:11:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199105 states. [2019-09-10 08:11:58,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199105 to 199103. [2019-09-10 08:11:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199103 states. [2019-09-10 08:11:59,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199103 states to 199103 states and 260238 transitions. [2019-09-10 08:11:59,083 INFO L78 Accepts]: Start accepts. Automaton has 199103 states and 260238 transitions. Word has length 104 [2019-09-10 08:11:59,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:11:59,083 INFO L475 AbstractCegarLoop]: Abstraction has 199103 states and 260238 transitions. [2019-09-10 08:11:59,083 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:11:59,083 INFO L276 IsEmpty]: Start isEmpty. Operand 199103 states and 260238 transitions. [2019-09-10 08:11:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 08:11:59,086 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:11:59,086 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:11:59,087 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:11:59,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:11:59,087 INFO L82 PathProgramCache]: Analyzing trace with hash -415359891, now seen corresponding path program 1 times [2019-09-10 08:11:59,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:11:59,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:11:59,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:11:59,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:11:59,088 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:11:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:12:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:12:00,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:12:00,073 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:12:00,073 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 105 with the following transitions: [2019-09-10 08:12:00,073 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [125], [127], [129], [132], [135], [140], [142], [145], [148], [151], [153], [155], [158], [161], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [204], [207], [213], [216], [219], [221], [238], [241], [244], [246], [254], [257], [263], [266], [269], [271], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:12:00,076 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:12:00,076 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:12:00,092 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:12:00,458 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:12:00,459 INFO L272 AbstractInterpreter]: Visited 97 different actions 813 times. Merged at 59 different actions 637 times. Widened at 18 different actions 88 times. Performed 2617 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2617 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 74 fixpoints after 18 different actions. Largest state had 131 variables. [2019-09-10 08:12:00,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:12:00,459 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:12:00,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:12:00,460 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:12:00,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:12:00,480 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:12:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:12:00,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-10 08:12:00,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:12:00,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:12:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:12:01,141 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:12:01,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:12:01,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:12:01,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:12:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:12:03,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:12:03,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 41 [2019-09-10 08:12:03,329 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:12:03,329 INFO L454 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-09-10 08:12:03,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-09-10 08:12:03,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1491, Unknown=0, NotChecked=0, Total=1640 [2019-09-10 08:12:03,330 INFO L87 Difference]: Start difference. First operand 199103 states and 260238 transitions. Second operand 30 states. [2019-09-10 08:12:05,294 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2019-09-10 08:12:05,718 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 93 [2019-09-10 08:12:05,975 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2019-09-10 08:12:06,180 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-10 08:12:06,837 WARN L188 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2019-09-10 08:12:07,706 WARN L188 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2019-09-10 08:12:08,218 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2019-09-10 08:12:09,785 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2019-09-10 08:12:11,451 WARN L188 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2019-09-10 08:12:15,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:12:15,141 INFO L93 Difference]: Finished difference Result 387795 states and 508081 transitions. [2019-09-10 08:12:15,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-09-10 08:12:15,142 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 104 [2019-09-10 08:12:15,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:12:15,583 INFO L225 Difference]: With dead ends: 387795 [2019-09-10 08:12:15,583 INFO L226 Difference]: Without dead ends: 387795 [2019-09-10 08:12:15,584 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1754 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=1340, Invalid=6142, Unknown=0, NotChecked=0, Total=7482 [2019-09-10 08:12:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387795 states. [2019-09-10 08:12:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387795 to 200883. [2019-09-10 08:12:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200883 states. [2019-09-10 08:12:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200883 states to 200883 states and 262950 transitions. [2019-09-10 08:12:22,760 INFO L78 Accepts]: Start accepts. Automaton has 200883 states and 262950 transitions. Word has length 104 [2019-09-10 08:12:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:12:22,760 INFO L475 AbstractCegarLoop]: Abstraction has 200883 states and 262950 transitions. [2019-09-10 08:12:22,760 INFO L476 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-09-10 08:12:22,760 INFO L276 IsEmpty]: Start isEmpty. Operand 200883 states and 262950 transitions. [2019-09-10 08:12:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 08:12:22,764 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:12:22,764 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:12:22,765 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:12:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:12:22,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1301778898, now seen corresponding path program 1 times [2019-09-10 08:12:22,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:12:22,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:12:22,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:12:22,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:12:22,766 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:12:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:12:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 08:12:22,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:12:22,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:12:22,817 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:12:22,818 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:12:22,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:12:22,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:12:22,818 INFO L87 Difference]: Start difference. First operand 200883 states and 262950 transitions. Second operand 3 states. [2019-09-10 08:12:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:12:23,146 INFO L93 Difference]: Finished difference Result 125989 states and 164481 transitions. [2019-09-10 08:12:23,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:12:23,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-09-10 08:12:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:12:23,261 INFO L225 Difference]: With dead ends: 125989 [2019-09-10 08:12:23,261 INFO L226 Difference]: Without dead ends: 125989 [2019-09-10 08:12:23,262 INFO L628 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 [2019-09-10 08:12:23,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125989 states. [2019-09-10 08:12:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125989 to 125989. [2019-09-10 08:12:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125989 states. [2019-09-10 08:12:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125989 states to 125989 states and 164481 transitions. [2019-09-10 08:12:24,892 INFO L78 Accepts]: Start accepts. Automaton has 125989 states and 164481 transitions. Word has length 104 [2019-09-10 08:12:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:12:24,892 INFO L475 AbstractCegarLoop]: Abstraction has 125989 states and 164481 transitions. [2019-09-10 08:12:24,892 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:12:24,893 INFO L276 IsEmpty]: Start isEmpty. Operand 125989 states and 164481 transitions. [2019-09-10 08:12:24,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-10 08:12:24,895 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:12:24,896 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:12:24,896 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:12:24,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:12:24,896 INFO L82 PathProgramCache]: Analyzing trace with hash -357427953, now seen corresponding path program 1 times [2019-09-10 08:12:24,896 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:12:24,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:12:24,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:12:24,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:12:24,897 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:12:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:12:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:12:25,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:12:25,947 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:12:25,947 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 106 with the following transitions: [2019-09-10 08:12:25,948 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [127], [129], [132], [135], [140], [142], [145], [148], [151], [153], [155], [158], [161], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [204], [207], [213], [216], [219], [221], [238], [241], [244], [246], [254], [259], [263], [266], [269], [271], [279], [282], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:12:25,950 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:12:25,950 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:12:25,965 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:12:27,026 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:12:27,026 INFO L272 AbstractInterpreter]: Visited 98 different actions 677 times. Merged at 60 different actions 513 times. Widened at 17 different actions 57 times. Performed 2272 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2272 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 59 fixpoints after 19 different actions. Largest state had 131 variables. [2019-09-10 08:12:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:12:27,026 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:12:27,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:12:27,027 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 08:12:27,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:12:27,041 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:12:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:12:27,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-10 08:12:27,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:12:27,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:12:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:12:29,067 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:12:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:12:29,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:12:29,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 37 [2019-09-10 08:12:29,632 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:12:29,633 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 08:12:29,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 08:12:29,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2019-09-10 08:12:29,634 INFO L87 Difference]: Start difference. First operand 125989 states and 164481 transitions. Second operand 28 states. [2019-09-10 08:12:31,229 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-10 08:12:31,485 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 08:12:32,139 WARN L188 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-10 08:12:32,573 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2019-09-10 08:12:32,776 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-10 08:12:33,705 WARN L188 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 08:12:34,195 WARN L188 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 95 [2019-09-10 08:12:34,567 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 76 [2019-09-10 08:12:34,954 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2019-09-10 08:12:35,249 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 08:12:35,500 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-10 08:12:35,854 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 08:12:36,156 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 08:12:36,385 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 08:12:36,887 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 08:12:37,306 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2019-09-10 08:12:37,602 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 08:12:37,849 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 08:12:38,191 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:12:38,570 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2019-09-10 08:12:38,882 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2019-09-10 08:12:39,121 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 08:12:39,515 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-10 08:12:39,809 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-10 08:12:39,954 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2019-09-10 08:12:40,131 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-10 08:12:40,416 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-10 08:12:41,344 WARN L188 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2019-09-10 08:12:41,701 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2019-09-10 08:12:42,067 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2019-09-10 08:12:42,260 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-10 08:12:42,454 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-10 08:12:42,767 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2019-09-10 08:12:43,249 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 100 [2019-09-10 08:12:43,576 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2019-09-10 08:12:44,097 WARN L188 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 104 [2019-09-10 08:12:44,570 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 08:12:45,065 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-10 08:12:45,355 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2019-09-10 08:12:45,698 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2019-09-10 08:12:45,867 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2019-09-10 08:12:46,392 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2019-09-10 08:12:46,938 WARN L188 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 107 [2019-09-10 08:12:47,406 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 08:12:47,823 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 91 [2019-09-10 08:12:48,330 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-10 08:12:48,787 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2019-09-10 08:12:50,243 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2019-09-10 08:12:50,522 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-09-10 08:12:51,277 WARN L188 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2019-09-10 08:12:51,589 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-09-10 08:12:52,112 WARN L188 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 101 [2019-09-10 08:12:52,529 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 94 [2019-09-10 08:12:53,003 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2019-09-10 08:12:53,414 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2019-09-10 08:12:53,912 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-09-10 08:12:54,238 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2019-09-10 08:12:54,504 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2019-09-10 08:12:54,968 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 100 [2019-09-10 08:12:55,292 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 08:12:55,729 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-10 08:12:56,030 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2019-09-10 08:12:56,541 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 104 [2019-09-10 08:12:57,127 WARN L188 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2019-09-10 08:12:57,431 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-10 08:12:57,628 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2019-09-10 08:12:57,986 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-10 08:12:58,158 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-10 08:12:58,478 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2019-09-10 08:12:58,790 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-10 08:12:58,978 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 08:12:59,252 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2019-09-10 08:12:59,465 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-10 08:12:59,914 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 94 [2019-09-10 08:13:00,292 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-09-10 08:13:00,595 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:13:00,783 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-10 08:13:01,611 WARN L188 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-09-10 08:13:01,835 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:13:02,315 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2019-09-10 08:13:02,840 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2019-09-10 08:13:03,638 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2019-09-10 08:13:03,831 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-10 08:13:04,100 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-09-10 08:13:04,329 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-09-10 08:13:04,785 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2019-09-10 08:13:05,117 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-10 08:13:05,614 WARN L188 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 08:13:05,822 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 08:13:06,114 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2019-09-10 08:13:06,378 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-09-10 08:13:06,929 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 101 [2019-09-10 08:13:07,304 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2019-09-10 08:13:07,616 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 08:13:07,859 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 08:13:08,197 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2019-09-10 08:13:08,667 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-10 08:13:08,963 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-10 08:13:09,183 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-10 08:13:09,565 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-10 08:13:09,865 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-09-10 08:13:10,101 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:13:10,666 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-09-10 08:13:11,045 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-10 08:13:11,310 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-09-10 08:13:11,749 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2019-09-10 08:13:12,131 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 08:13:12,394 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-10 08:13:12,807 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2019-09-10 08:13:13,280 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-10 08:13:13,663 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2019-09-10 08:13:14,082 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 90 [2019-09-10 08:13:14,310 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 08:13:14,577 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 08:13:14,960 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2019-09-10 08:13:15,376 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2019-09-10 08:13:15,733 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-10 08:13:16,065 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:13:16,502 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-10 08:13:16,962 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2019-09-10 08:13:17,267 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-09-10 08:13:17,601 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2019-09-10 08:13:18,196 WARN L188 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2019-09-10 08:13:18,532 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-09-10 08:13:18,792 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-09-10 08:13:19,186 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2019-09-10 08:13:19,578 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:13:19,896 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 08:13:20,382 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2019-09-10 08:13:21,048 WARN L188 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 08:13:21,293 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-09-10 08:13:21,621 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2019-09-10 08:13:21,928 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-09-10 08:13:22,186 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 08:13:22,451 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2019-09-10 08:13:22,871 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-10 08:13:23,385 WARN L188 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2019-09-10 08:13:23,742 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:13:23,926 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2019-09-10 08:13:24,357 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2019-09-10 08:13:24,594 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 08:13:24,987 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 90 [2019-09-10 08:13:25,570 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-10 08:13:25,874 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-10 08:13:26,117 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-10 08:13:26,548 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-10 08:13:26,926 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-09-10 08:13:27,197 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 08:13:27,570 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2019-09-10 08:13:27,920 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2019-09-10 08:13:28,279 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-10 08:13:28,716 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2019-09-10 08:13:28,999 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:13:29,217 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-10 08:13:29,693 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 94 [2019-09-10 08:13:29,860 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-10 08:13:30,042 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-10 08:13:30,264 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 08:13:30,562 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2019-09-10 08:13:30,706 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2019-09-10 08:13:31,064 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2019-09-10 08:13:31,465 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-10 08:13:31,837 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2019-09-10 08:13:32,265 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2019-09-10 08:13:32,832 WARN L188 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 97 [2019-09-10 08:13:33,076 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-10 08:13:33,353 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:13:33,590 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 08:13:34,069 WARN L188 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 97 [2019-09-10 08:13:34,411 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-10 08:13:34,724 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2019-09-10 08:13:34,991 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 08:13:35,397 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-10 08:13:35,570 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 08:13:35,869 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2019-09-10 08:13:36,397 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2019-09-10 08:13:37,052 WARN L188 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 100 [2019-09-10 08:13:37,592 WARN L188 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2019-09-10 08:13:38,005 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 08:13:38,389 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-10 08:13:38,958 WARN L188 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 100 [2019-09-10 08:13:39,417 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2019-09-10 08:13:39,677 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 08:13:39,868 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-10 08:13:40,273 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2019-09-10 08:13:40,841 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-09-10 08:13:41,310 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2019-09-10 08:13:41,899 WARN L188 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 103 [2019-09-10 08:13:42,296 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 08:13:42,651 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 08:13:43,045 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:13:43,406 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 08:13:43,610 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-09-10 08:13:43,777 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-10 08:13:44,087 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 08:13:44,691 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-10 08:13:44,872 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2019-09-10 08:13:45,201 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 08:13:45,532 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-10 08:13:45,915 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-10 08:13:46,248 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 08:13:46,645 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2019-09-10 08:13:46,896 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-10 08:13:47,399 WARN L188 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 97 [2019-09-10 08:13:47,780 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2019-09-10 08:13:48,542 WARN L188 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 100 [2019-09-10 08:13:48,754 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-10 08:13:48,957 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 08:13:49,339 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2019-09-10 08:13:49,895 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 91 [2019-09-10 08:13:50,281 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 81 [2019-09-10 08:13:50,609 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2019-09-10 08:13:50,991 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 08:13:51,529 WARN L188 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 103 [2019-09-10 08:13:51,732 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-10 08:13:52,336 WARN L188 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 94 [2019-09-10 08:13:52,721 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 84 [2019-09-10 08:13:53,124 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 80 [2019-09-10 08:13:53,682 WARN L188 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 104 [2019-09-10 08:13:54,162 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2019-09-10 08:13:54,528 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-10 08:13:54,934 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 85 [2019-09-10 08:13:55,345 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-09-10 08:13:55,988 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 08:13:56,395 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 08:13:56,803 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 08:13:57,079 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-09-10 08:13:57,446 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-09-10 08:13:57,725 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-10 08:13:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:13:58,742 INFO L93 Difference]: Finished difference Result 312881 states and 400797 transitions. [2019-09-10 08:13:58,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 279 states. [2019-09-10 08:13:58,743 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 105 [2019-09-10 08:13:58,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:13:59,077 INFO L225 Difference]: With dead ends: 312881 [2019-09-10 08:13:59,078 INFO L226 Difference]: Without dead ends: 312881 [2019-09-10 08:13:59,081 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 174 SyntacticMatches, 20 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38415 ImplicationChecksByTransitivity, 82.3s TimeCoverageRelationStatistics Valid=13159, Invalid=84497, Unknown=0, NotChecked=0, Total=97656 [2019-09-10 08:13:59,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312881 states. [2019-09-10 08:14:01,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312881 to 127041. [2019-09-10 08:14:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127041 states. [2019-09-10 08:14:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127041 states to 127041 states and 165885 transitions. [2019-09-10 08:14:01,178 INFO L78 Accepts]: Start accepts. Automaton has 127041 states and 165885 transitions. Word has length 105 [2019-09-10 08:14:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:14:01,179 INFO L475 AbstractCegarLoop]: Abstraction has 127041 states and 165885 transitions. [2019-09-10 08:14:01,179 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 08:14:01,179 INFO L276 IsEmpty]: Start isEmpty. Operand 127041 states and 165885 transitions. [2019-09-10 08:14:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-10 08:14:01,181 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:14:01,182 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:14:01,182 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:14:01,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:14:01,182 INFO L82 PathProgramCache]: Analyzing trace with hash -287303182, now seen corresponding path program 1 times [2019-09-10 08:14:01,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:14:01,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:14:01,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:14:01,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:14:01,183 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:14:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:14:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-10 08:14:01,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:14:01,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:14:01,229 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:14:01,229 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:14:01,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:14:01,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:14:01,230 INFO L87 Difference]: Start difference. First operand 127041 states and 165885 transitions. Second operand 3 states. [2019-09-10 08:14:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:14:01,504 INFO L93 Difference]: Finished difference Result 102127 states and 132687 transitions. [2019-09-10 08:14:01,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:14:01,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-09-10 08:14:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:14:01,613 INFO L225 Difference]: With dead ends: 102127 [2019-09-10 08:14:01,613 INFO L226 Difference]: Without dead ends: 102127 [2019-09-10 08:14:01,613 INFO L628 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 [2019-09-10 08:14:01,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102127 states. [2019-09-10 08:14:02,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102127 to 102127. [2019-09-10 08:14:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102127 states. [2019-09-10 08:14:02,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102127 states to 102127 states and 132687 transitions. [2019-09-10 08:14:02,902 INFO L78 Accepts]: Start accepts. Automaton has 102127 states and 132687 transitions. Word has length 106 [2019-09-10 08:14:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:14:02,903 INFO L475 AbstractCegarLoop]: Abstraction has 102127 states and 132687 transitions. [2019-09-10 08:14:02,903 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:14:02,903 INFO L276 IsEmpty]: Start isEmpty. Operand 102127 states and 132687 transitions. [2019-09-10 08:14:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-10 08:14:02,904 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:14:02,905 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 08:14:02,905 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:14:02,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:14:02,905 INFO L82 PathProgramCache]: Analyzing trace with hash 521689820, now seen corresponding path program 1 times [2019-09-10 08:14:02,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:14:02,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:14:02,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:14:02,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:14:02,906 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:14:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:14:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-10 08:14:02,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:14:02,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:14:02,949 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:14:02,949 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:14:02,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:14:02,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:14:02,950 INFO L87 Difference]: Start difference. First operand 102127 states and 132687 transitions. Second operand 3 states. [2019-09-10 08:14:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:14:03,150 INFO L93 Difference]: Finished difference Result 70265 states and 90773 transitions. [2019-09-10 08:14:03,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:14:03,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-09-10 08:14:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:14:03,231 INFO L225 Difference]: With dead ends: 70265 [2019-09-10 08:14:03,231 INFO L226 Difference]: Without dead ends: 70265 [2019-09-10 08:14:03,232 INFO L628 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 [2019-09-10 08:14:03,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70265 states. [2019-09-10 08:14:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70265 to 70265. [2019-09-10 08:14:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70265 states. [2019-09-10 08:14:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70265 states to 70265 states and 90773 transitions. [2019-09-10 08:14:04,171 INFO L78 Accepts]: Start accepts. Automaton has 70265 states and 90773 transitions. Word has length 106 [2019-09-10 08:14:04,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:14:04,171 INFO L475 AbstractCegarLoop]: Abstraction has 70265 states and 90773 transitions. [2019-09-10 08:14:04,171 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:14:04,171 INFO L276 IsEmpty]: Start isEmpty. Operand 70265 states and 90773 transitions. [2019-09-10 08:14:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-10 08:14:04,176 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:14:04,176 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:14:04,176 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:14:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:14:04,176 INFO L82 PathProgramCache]: Analyzing trace with hash 687250266, now seen corresponding path program 1 times [2019-09-10 08:14:04,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:14:04,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:14:04,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:14:04,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:14:04,177 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:14:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:14:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:14:04,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:14:04,288 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:14:04,289 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2019-09-10 08:14:04,289 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [125], [127], [129], [132], [135], [138], [140], [142], [145], [148], [153], [155], [158], [161], [164], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [200], [213], [216], [219], [221], [229], [232], [238], [241], [244], [246], [263], [266], [269], [271], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:14:04,291 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:14:04,291 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:14:04,310 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:14:04,804 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:14:04,804 INFO L272 AbstractInterpreter]: Visited 96 different actions 975 times. Merged at 58 different actions 780 times. Widened at 20 different actions 138 times. Performed 3193 root evaluator evaluations with a maximum evaluation depth of 7. Performed 3193 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 94 fixpoints after 22 different actions. Largest state had 131 variables. [2019-09-10 08:14:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:14:04,804 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:14:04,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:14:04,804 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:14:04,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:14:04,817 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:14:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:14:04,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 08:14:04,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:14:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:14:05,024 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:14:05,084 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (11)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 08:14:05,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:14:05,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2019-09-10 08:14:05,097 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:14:05,098 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 08:14:05,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 08:14:05,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-10 08:14:05,098 INFO L87 Difference]: Start difference. First operand 70265 states and 90773 transitions. Second operand 11 states. [2019-09-10 08:14:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:14:05,465 INFO L93 Difference]: Finished difference Result 63999 states and 81925 transitions. [2019-09-10 08:14:05,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 08:14:05,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 137 [2019-09-10 08:14:05,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:14:05,522 INFO L225 Difference]: With dead ends: 63999 [2019-09-10 08:14:05,522 INFO L226 Difference]: Without dead ends: 63999 [2019-09-10 08:14:05,522 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 266 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-09-10 08:14:05,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63999 states. [2019-09-10 08:14:06,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63999 to 58761. [2019-09-10 08:14:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58761 states. [2019-09-10 08:14:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58761 states to 58761 states and 75585 transitions. [2019-09-10 08:14:06,305 INFO L78 Accepts]: Start accepts. Automaton has 58761 states and 75585 transitions. Word has length 137 [2019-09-10 08:14:06,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:14:06,305 INFO L475 AbstractCegarLoop]: Abstraction has 58761 states and 75585 transitions. [2019-09-10 08:14:06,305 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 08:14:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand 58761 states and 75585 transitions. [2019-09-10 08:14:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-09-10 08:14:06,317 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:14:06,318 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2019-09-10 08:14:06,318 INFO L418 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:14:06,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:14:06,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1802683877, now seen corresponding path program 1 times [2019-09-10 08:14:06,318 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:14:06,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:14:06,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:14:06,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:14:06,320 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:14:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:14:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:14:06,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:14:06,654 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:14:06,654 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 167 with the following transitions: [2019-09-10 08:14:06,655 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [125], [127], [129], [132], [135], [138], [140], [142], [145], [148], [151], [153], [155], [158], [161], [164], [166], [168], [171], [174], [178], [180], [183], [184], [186], [188], [193], [195], [198], [211], [213], [216], [219], [221], [236], [238], [241], [244], [246], [261], [263], [266], [269], [271], [286], [288], [291], [294], [296], [311], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:14:06,656 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:14:06,657 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:14:06,671 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:14:07,351 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:14:07,352 INFO L272 AbstractInterpreter]: Visited 102 different actions 1486 times. Merged at 63 different actions 1114 times. Widened at 26 different actions 246 times. Performed 4760 root evaluator evaluations with a maximum evaluation depth of 7. Performed 4760 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 246 fixpoints after 27 different actions. Largest state had 131 variables. [2019-09-10 08:14:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:14:07,352 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:14:07,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:14:07,352 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:14:07,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:14:07,367 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:14:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:14:07,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 08:14:07,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:14:07,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:07,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 59 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:14:08,094 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:14:08,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:08,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:10,485 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 51 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:14:10,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:14:10,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2019-09-10 08:14:10,685 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:14:10,685 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-10 08:14:10,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-10 08:14:10,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2019-09-10 08:14:10,686 INFO L87 Difference]: Start difference. First operand 58761 states and 75585 transitions. Second operand 21 states. [2019-09-10 08:14:11,068 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-09-10 08:14:11,704 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-10 08:14:12,390 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-10 08:14:12,776 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-10 08:14:13,493 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-10 08:14:13,857 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 08:14:14,197 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 08:14:14,494 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2019-09-10 08:14:14,896 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-10 08:14:15,775 WARN L188 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2019-09-10 08:14:16,353 WARN L188 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2019-09-10 08:14:16,771 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2019-09-10 08:14:17,107 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 08:14:17,735 WARN L188 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2019-09-10 08:14:18,199 WARN L188 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-09-10 08:14:18,645 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2019-09-10 08:14:19,019 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 08:14:19,557 WARN L188 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2019-09-10 08:14:19,900 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:14:20,359 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:14:20,709 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:14:21,246 WARN L188 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:14:21,702 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2019-09-10 08:14:22,237 WARN L188 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2019-09-10 08:14:22,609 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:14:23,051 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:14:24,158 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2019-09-10 08:14:24,722 WARN L188 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2019-09-10 08:14:25,155 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 08:14:25,650 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-10 08:14:25,981 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-10 08:14:26,523 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 92 [2019-09-10 08:14:27,086 WARN L188 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2019-09-10 08:14:27,555 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:14:28,144 WARN L188 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-09-10 08:14:28,771 WARN L188 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 92 [2019-09-10 08:14:29,182 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2019-09-10 08:14:29,717 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2019-09-10 08:14:30,448 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 92 [2019-09-10 08:14:31,057 WARN L188 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2019-09-10 08:14:31,543 WARN L188 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-09-10 08:14:32,010 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2019-09-10 08:14:32,361 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-10 08:14:32,801 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2019-09-10 08:14:33,312 WARN L188 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 08:14:34,731 WARN L188 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-09-10 08:14:35,181 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 08:14:35,879 WARN L188 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2019-09-10 08:14:36,455 WARN L188 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-10 08:14:36,996 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2019-09-10 08:14:37,609 WARN L188 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 89 [2019-09-10 08:14:38,159 WARN L188 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2019-09-10 08:14:38,661 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2019-09-10 08:14:39,207 WARN L188 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2019-09-10 08:14:39,700 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:14:40,315 WARN L188 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 88 [2019-09-10 08:14:42,799 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 92 [2019-09-10 08:14:43,178 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2019-09-10 08:14:43,557 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2019-09-10 08:14:44,113 WARN L188 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 88 [2019-09-10 08:14:44,717 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:14:45,346 WARN L188 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 08:14:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:14:45,372 INFO L93 Difference]: Finished difference Result 102349 states and 127161 transitions. [2019-09-10 08:14:45,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-09-10 08:14:45,372 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 166 [2019-09-10 08:14:45,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:14:45,465 INFO L225 Difference]: With dead ends: 102349 [2019-09-10 08:14:45,466 INFO L226 Difference]: Without dead ends: 102349 [2019-09-10 08:14:45,466 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 280 SyntacticMatches, 34 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2495 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=2248, Invalid=6872, Unknown=0, NotChecked=0, Total=9120 [2019-09-10 08:14:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102349 states. [2019-09-10 08:14:46,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102349 to 43253. [2019-09-10 08:14:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43253 states. [2019-09-10 08:14:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43253 states to 43253 states and 54861 transitions. [2019-09-10 08:14:46,306 INFO L78 Accepts]: Start accepts. Automaton has 43253 states and 54861 transitions. Word has length 166 [2019-09-10 08:14:46,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:14:46,307 INFO L475 AbstractCegarLoop]: Abstraction has 43253 states and 54861 transitions. [2019-09-10 08:14:46,307 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-10 08:14:46,307 INFO L276 IsEmpty]: Start isEmpty. Operand 43253 states and 54861 transitions. [2019-09-10 08:14:46,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-09-10 08:14:46,314 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:14:46,314 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:14:46,315 INFO L418 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:14:46,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:14:46,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1919511843, now seen corresponding path program 1 times [2019-09-10 08:14:46,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:14:46,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:14:46,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:14:46,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:14:46,317 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:14:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:14:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 30 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:14:46,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:14:46,651 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:14:46,652 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 168 with the following transitions: [2019-09-10 08:14:46,652 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [125], [127], [129], [132], [135], [138], [140], [142], [145], [148], [151], [153], [155], [158], [161], [164], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [204], [207], [213], [216], [219], [221], [236], [238], [241], [244], [246], [261], [263], [266], [269], [271], [286], [288], [291], [294], [296], [304], [307], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:14:46,654 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:14:46,654 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:14:46,669 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:14:47,468 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:14:47,469 INFO L272 AbstractInterpreter]: Visited 102 different actions 1408 times. Merged at 64 different actions 1068 times. Widened at 25 different actions 238 times. Performed 4497 root evaluator evaluations with a maximum evaluation depth of 5. Performed 4497 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 209 fixpoints after 24 different actions. Largest state had 131 variables. [2019-09-10 08:14:47,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:14:47,469 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:14:47,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:14:47,469 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:14:47,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:14:47,481 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:14:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:14:47,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-10 08:14:47,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:14:47,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 40 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:14:48,305 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:14:48,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:48,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:49,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:49,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:49,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:52,610 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:14:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 38 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:14:53,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:14:53,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2019-09-10 08:14:53,037 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:14:53,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-10 08:14:53,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-10 08:14:53,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2019-09-10 08:14:53,037 INFO L87 Difference]: Start difference. First operand 43253 states and 54861 transitions. Second operand 21 states. [2019-09-10 08:14:57,134 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-10 08:14:57,289 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-10 08:14:57,728 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-10 08:14:57,881 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-10 08:14:58,061 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2019-09-10 08:15:01,139 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 08:15:01,369 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-09-10 08:15:01,678 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 08:15:01,924 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 08:15:02,473 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 08:15:02,648 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 08:15:03,048 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-10 08:15:03,287 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-10 08:15:03,658 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2019-09-10 08:15:03,882 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2019-09-10 08:15:04,273 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-10 08:15:04,488 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-10 08:15:04,680 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 08:15:06,065 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-10 08:15:06,288 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-10 08:15:06,487 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 08:15:07,156 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2019-09-10 08:15:07,911 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-10 08:15:08,139 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 08:15:08,715 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2019-09-10 08:15:09,000 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2019-09-10 08:15:09,240 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-10 08:15:09,703 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-10 08:15:10,085 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2019-09-10 08:15:10,320 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2019-09-10 08:15:10,594 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2019-09-10 08:15:10,973 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 08:15:12,404 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-10 08:15:12,892 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 08:15:13,581 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-10 08:15:13,835 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-10 08:15:13,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:15:13,990 INFO L93 Difference]: Finished difference Result 65659 states and 82639 transitions. [2019-09-10 08:15:13,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-09-10 08:15:13,990 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 167 [2019-09-10 08:15:13,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:15:14,041 INFO L225 Difference]: With dead ends: 65659 [2019-09-10 08:15:14,041 INFO L226 Difference]: Without dead ends: 65659 [2019-09-10 08:15:14,042 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 252 SyntacticMatches, 64 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2092 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=1362, Invalid=4338, Unknown=0, NotChecked=0, Total=5700 [2019-09-10 08:15:14,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65659 states. [2019-09-10 08:15:14,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65659 to 43005. [2019-09-10 08:15:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43005 states. [2019-09-10 08:15:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43005 states to 43005 states and 53925 transitions. [2019-09-10 08:15:14,507 INFO L78 Accepts]: Start accepts. Automaton has 43005 states and 53925 transitions. Word has length 167 [2019-09-10 08:15:14,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:15:14,507 INFO L475 AbstractCegarLoop]: Abstraction has 43005 states and 53925 transitions. [2019-09-10 08:15:14,507 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-10 08:15:14,507 INFO L276 IsEmpty]: Start isEmpty. Operand 43005 states and 53925 transitions. [2019-09-10 08:15:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-09-10 08:15:14,513 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:15:14,514 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:15:14,514 INFO L418 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:15:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:15:14,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1807611845, now seen corresponding path program 1 times [2019-09-10 08:15:14,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:15:14,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:15:14,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:15:14,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:15:14,515 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:15:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:15:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-10 08:15:14,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:15:14,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:15:14,582 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:15:14,582 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:15:14,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:15:14,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:15:14,583 INFO L87 Difference]: Start difference. First operand 43005 states and 53925 transitions. Second operand 3 states. [2019-09-10 08:15:14,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:15:14,633 INFO L93 Difference]: Finished difference Result 18871 states and 23467 transitions. [2019-09-10 08:15:14,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:15:14,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-09-10 08:15:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:15:14,653 INFO L225 Difference]: With dead ends: 18871 [2019-09-10 08:15:14,653 INFO L226 Difference]: Without dead ends: 18871 [2019-09-10 08:15:14,654 INFO L628 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 [2019-09-10 08:15:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18871 states. [2019-09-10 08:15:14,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18871 to 18869. [2019-09-10 08:15:14,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18869 states. [2019-09-10 08:15:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18869 states to 18869 states and 23466 transitions. [2019-09-10 08:15:14,832 INFO L78 Accepts]: Start accepts. Automaton has 18869 states and 23466 transitions. Word has length 168 [2019-09-10 08:15:14,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:15:14,832 INFO L475 AbstractCegarLoop]: Abstraction has 18869 states and 23466 transitions. [2019-09-10 08:15:14,832 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:15:14,833 INFO L276 IsEmpty]: Start isEmpty. Operand 18869 states and 23466 transitions. [2019-09-10 08:15:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-09-10 08:15:14,838 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:15:14,838 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:15:14,838 INFO L418 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:15:14,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:15:14,838 INFO L82 PathProgramCache]: Analyzing trace with hash 604380475, now seen corresponding path program 1 times [2019-09-10 08:15:14,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:15:14,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:15:14,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:15:14,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:15:14,840 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:15:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:15:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 39 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:15:15,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:15:15,815 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:15:15,815 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 170 with the following transitions: [2019-09-10 08:15:15,815 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [125], [127], [129], [132], [135], [138], [140], [142], [145], [148], [151], [153], [155], [158], [161], [164], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [204], [207], [213], [216], [219], [221], [236], [238], [241], [244], [246], [263], [266], [269], [271], [279], [282], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:15:15,817 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:15:15,817 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:15:15,831 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:15:16,377 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:15:16,377 INFO L272 AbstractInterpreter]: Visited 100 different actions 1206 times. Merged at 62 different actions 940 times. Widened at 22 different actions 167 times. Performed 3905 root evaluator evaluations with a maximum evaluation depth of 5. Performed 3905 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 153 fixpoints after 24 different actions. Largest state had 131 variables. [2019-09-10 08:15:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:15:16,378 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:15:16,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:15:16,378 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:15:16,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:15:16,536 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:15:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:15:16,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 08:15:16,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:15:16,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:16,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 26 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:15:17,260 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:15:17,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:17,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:19,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:15:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 22 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:15:19,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:15:19,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 38 [2019-09-10 08:15:19,577 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:15:19,578 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 08:15:19,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 08:15:19,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2019-09-10 08:15:19,578 INFO L87 Difference]: Start difference. First operand 18869 states and 23466 transitions. Second operand 28 states. [2019-09-10 08:15:19,769 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 08:15:21,197 WARN L188 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2019-09-10 08:15:21,621 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2019-09-10 08:15:22,068 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2019-09-10 08:15:22,578 WARN L188 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2019-09-10 08:15:23,662 WARN L188 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2019-09-10 08:15:24,464 WARN L188 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2019-09-10 08:15:25,492 WARN L188 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2019-09-10 08:15:25,982 WARN L188 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2019-09-10 08:15:26,524 WARN L188 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2019-09-10 08:15:27,026 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2019-09-10 08:15:27,927 WARN L188 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2019-09-10 08:15:28,445 WARN L188 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2019-09-10 08:15:29,499 WARN L188 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2019-09-10 08:15:30,203 WARN L188 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2019-09-10 08:15:31,041 WARN L188 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2019-09-10 08:15:31,610 WARN L188 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2019-09-10 08:15:32,598 WARN L188 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 133 [2019-09-10 08:15:33,371 WARN L188 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2019-09-10 08:15:36,530 WARN L188 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 134 DAG size of output: 126 [2019-09-10 08:15:39,268 WARN L188 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2019-09-10 08:15:40,470 WARN L188 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 126 [2019-09-10 08:15:41,000 WARN L188 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 106 [2019-09-10 08:15:41,634 WARN L188 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 121 [2019-09-10 08:15:42,550 WARN L188 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 122 [2019-09-10 08:15:43,037 WARN L188 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2019-09-10 08:15:43,481 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2019-09-10 08:15:44,283 WARN L188 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2019-09-10 08:15:44,759 WARN L188 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-10 08:15:45,306 WARN L188 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2019-09-10 08:15:46,047 WARN L188 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 116 [2019-09-10 08:15:46,538 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 08:15:46,912 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-10 08:15:47,711 WARN L188 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 111 [2019-09-10 08:15:48,035 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-10 08:15:48,933 WARN L188 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 140 [2019-09-10 08:15:49,876 WARN L188 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 147 [2019-09-10 08:15:50,800 WARN L188 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 135 [2019-09-10 08:15:51,877 WARN L188 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 143 [2019-09-10 08:15:52,713 WARN L188 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 142 [2019-09-10 08:15:53,461 WARN L188 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2019-09-10 08:15:54,513 WARN L188 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 150 [2019-09-10 08:15:55,430 WARN L188 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 138 [2019-09-10 08:15:56,508 WARN L188 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 120 [2019-09-10 08:15:59,335 WARN L188 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2019-09-10 08:15:59,998 WARN L188 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2019-09-10 08:16:01,029 WARN L188 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 145 [2019-09-10 08:16:02,755 WARN L188 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 131 DAG size of output: 123 [2019-09-10 08:16:03,363 WARN L188 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2019-09-10 08:16:04,740 WARN L188 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 148 [2019-09-10 08:16:05,129 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2019-09-10 08:16:06,235 WARN L188 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 153 [2019-09-10 08:16:07,289 WARN L188 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 155 [2019-09-10 08:16:07,915 WARN L188 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2019-09-10 08:16:08,463 WARN L188 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 08:16:09,057 WARN L188 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2019-09-10 08:16:10,094 WARN L188 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 160 [2019-09-10 08:16:10,762 WARN L188 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 126 [2019-09-10 08:16:11,482 WARN L188 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2019-09-10 08:16:12,112 WARN L188 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2019-09-10 08:16:13,036 WARN L188 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 133 [2019-09-10 08:16:14,422 WARN L188 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 148 DAG size of output: 138 [2019-09-10 08:16:15,407 WARN L188 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 145 [2019-09-10 08:16:16,155 WARN L188 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 123 [2019-09-10 08:16:16,738 WARN L188 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2019-09-10 08:16:17,928 WARN L188 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 142 DAG size of output: 130 [2019-09-10 08:16:18,395 WARN L188 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2019-09-10 08:16:19,152 WARN L188 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 128 [2019-09-10 08:16:19,941 WARN L188 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2019-09-10 08:16:21,477 WARN L188 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 113 [2019-09-10 08:16:21,949 WARN L188 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2019-09-10 08:16:22,204 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-10 08:16:23,283 WARN L188 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 160 [2019-09-10 08:16:24,106 WARN L188 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 135 [2019-09-10 08:16:24,631 WARN L188 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2019-09-10 08:16:24,954 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2019-09-10 08:16:27,817 WARN L188 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 141 DAG size of output: 133 [2019-09-10 08:16:28,343 WARN L188 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 108 [2019-09-10 08:16:28,570 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-10 08:16:29,463 WARN L188 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 135 [2019-09-10 08:16:30,146 WARN L188 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 120 [2019-09-10 08:16:30,554 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:16:31,193 WARN L188 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 108 [2019-09-10 08:16:32,255 WARN L188 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 120 [2019-09-10 08:16:32,818 WARN L188 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2019-09-10 08:16:33,424 WARN L188 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2019-09-10 08:16:34,247 WARN L188 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2019-09-10 08:16:35,230 WARN L188 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 135 [2019-09-10 08:16:35,908 WARN L188 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2019-09-10 08:16:38,891 WARN L188 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 157 DAG size of output: 145 [2019-09-10 08:16:39,410 WARN L188 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 08:16:40,043 WARN L188 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 120 [2019-09-10 08:16:40,992 WARN L188 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 140 [2019-09-10 08:16:41,698 WARN L188 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2019-09-10 08:16:42,323 WARN L188 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2019-09-10 08:16:43,136 WARN L188 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 128 [2019-09-10 08:16:43,807 WARN L188 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2019-09-10 08:16:44,475 WARN L188 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2019-09-10 08:16:45,001 WARN L188 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-09-10 08:16:45,705 WARN L188 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2019-09-10 08:16:47,075 WARN L188 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 175 DAG size of output: 163 [2019-09-10 08:16:47,905 WARN L188 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-09-10 08:16:48,395 WARN L188 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-09-10 08:16:48,844 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2019-09-10 08:16:49,667 WARN L188 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 143 [2019-09-10 08:16:50,287 WARN L188 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2019-09-10 08:16:50,720 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2019-09-10 08:16:53,553 WARN L188 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 143 DAG size of output: 131 [2019-09-10 08:16:54,802 WARN L188 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-09-10 08:16:55,560 WARN L188 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 133 [2019-09-10 08:16:56,514 WARN L188 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 136 [2019-09-10 08:16:57,055 WARN L188 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2019-09-10 08:16:58,092 WARN L188 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 138 [2019-09-10 08:16:58,456 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2019-09-10 08:16:59,240 WARN L188 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2019-09-10 08:17:00,122 WARN L188 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 123 [2019-09-10 08:17:02,151 WARN L188 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2019-09-10 08:17:02,844 WARN L188 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2019-09-10 08:17:03,124 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 08:17:03,768 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2019-09-10 08:17:04,243 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2019-09-10 08:17:06,373 WARN L188 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 165 DAG size of output: 153 [2019-09-10 08:17:07,272 WARN L188 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 138 [2019-09-10 08:17:09,194 WARN L188 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2019-09-10 08:17:09,834 WARN L188 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109