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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 06:45:07,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 06:45:07,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 06:45:07,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 06:45:07,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 06:45:07,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 06:45:07,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 06:45:07,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 06:45:07,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 06:45:07,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 06:45:07,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 06:45:07,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 06:45:07,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 06:45:07,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 06:45:07,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 06:45:07,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 06:45:07,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 06:45:07,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 06:45:07,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 06:45:07,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 06:45:07,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 06:45:07,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 06:45:07,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 06:45:07,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 06:45:07,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 06:45:07,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 06:45:07,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 06:45:07,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 06:45:07,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 06:45:07,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 06:45:07,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 06:45:07,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 06:45:07,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 06:45:07,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 06:45:07,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 06:45:07,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 06:45:07,104 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 06:45:07,120 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 06:45:07,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 06:45:07,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 06:45:07,121 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 06:45:07,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 06:45:07,122 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 06:45:07,122 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 06:45:07,122 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 06:45:07,122 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 06:45:07,122 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 06:45:07,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 06:45:07,123 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 06:45:07,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 06:45:07,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 06:45:07,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 06:45:07,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 06:45:07,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 06:45:07,126 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 06:45:07,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 06:45:07,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 06:45:07,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 06:45:07,127 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 06:45:07,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 06:45:07,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 06:45:07,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 06:45:07,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 06:45:07,128 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 06:45:07,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 06:45:07,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 06:45:07,128 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 06:45:07,181 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 06:45:07,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 06:45:07,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 06:45:07,208 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 06:45:07,208 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 06:45:07,209 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 06:45:07,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7de85f167/0b37766a8d2f47c68d7e5adbe83ba486/FLAG585a091a4 [2019-09-10 06:45:07,791 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 06:45:07,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 06:45:07,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7de85f167/0b37766a8d2f47c68d7e5adbe83ba486/FLAG585a091a4 [2019-09-10 06:45:08,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7de85f167/0b37766a8d2f47c68d7e5adbe83ba486 [2019-09-10 06:45:08,100 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 06:45:08,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 06:45:08,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 06:45:08,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 06:45:08,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 06:45:08,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 06:45:08" (1/1) ... [2019-09-10 06:45:08,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c6c133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:45:08, skipping insertion in model container [2019-09-10 06:45:08,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 06:45:08" (1/1) ... [2019-09-10 06:45:08,122 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 06:45:08,174 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 06:45:08,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 06:45:08,560 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 06:45:08,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 06:45:08,640 INFO L192 MainTranslator]: Completed translation [2019-09-10 06:45:08,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:45:08 WrapperNode [2019-09-10 06:45:08,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 06:45:08,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 06:45:08,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 06:45:08,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 06:45:08,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:45:08" (1/1) ... [2019-09-10 06:45:08,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:45:08" (1/1) ... [2019-09-10 06:45:08,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:45:08" (1/1) ... [2019-09-10 06:45:08,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:45:08" (1/1) ... [2019-09-10 06:45:08,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:45:08" (1/1) ... [2019-09-10 06:45:08,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:45:08" (1/1) ... [2019-09-10 06:45:08,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:45:08" (1/1) ... [2019-09-10 06:45:08,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 06:45:08,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 06:45:08,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 06:45:08,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 06:45:08,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:45:08" (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 06:45:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 06:45:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 06:45:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 06:45:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 06:45:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 06:45:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-10 06:45:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-10 06:45:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 06:45:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-10 06:45:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-10 06:45:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-10 06:45:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-10 06:45:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-10 06:45:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-10 06:45:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-10 06:45:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 06:45:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 06:45:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 06:45:09,390 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 06:45:09,393 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 06:45:09,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 06:45:09 BoogieIcfgContainer [2019-09-10 06:45:09,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 06:45:09,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 06:45:09,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 06:45:09,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 06:45:09,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 06:45:08" (1/3) ... [2019-09-10 06:45:09,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebabb47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 06:45:09, skipping insertion in model container [2019-09-10 06:45:09,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:45:08" (2/3) ... [2019-09-10 06:45:09,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebabb47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 06:45:09, skipping insertion in model container [2019-09-10 06:45:09,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 06:45:09" (3/3) ... [2019-09-10 06:45:09,413 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 06:45:09,425 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 06:45:09,453 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 06:45:09,474 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 06:45:09,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 06:45:09,507 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 06:45:09,507 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 06:45:09,507 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 06:45:09,508 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 06:45:09,508 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 06:45:09,508 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 06:45:09,508 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 06:45:09,527 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2019-09-10 06:45:09,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-10 06:45:09,541 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:09,542 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] [2019-09-10 06:45:09,545 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:09,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:09,551 INFO L82 PathProgramCache]: Analyzing trace with hash -60281297, now seen corresponding path program 1 times [2019-09-10 06:45:09,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:09,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:09,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:09,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:09,621 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:09,937 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 06:45:09,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:09,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:45:09,940 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:09,946 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:45:09,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:45:09,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:45:09,965 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2019-09-10 06:45:10,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:10,072 INFO L93 Difference]: Finished difference Result 140 states and 219 transitions. [2019-09-10 06:45:10,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:45:10,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-09-10 06:45:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:10,100 INFO L225 Difference]: With dead ends: 140 [2019-09-10 06:45:10,101 INFO L226 Difference]: Without dead ends: 132 [2019-09-10 06:45:10,105 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 06:45:10,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-09-10 06:45:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2019-09-10 06:45:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-09-10 06:45:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2019-09-10 06:45:10,201 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 41 [2019-09-10 06:45:10,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:10,201 INFO L475 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2019-09-10 06:45:10,202 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:45:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2019-09-10 06:45:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-10 06:45:10,205 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:10,205 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] [2019-09-10 06:45:10,206 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:10,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:10,206 INFO L82 PathProgramCache]: Analyzing trace with hash 213438414, now seen corresponding path program 1 times [2019-09-10 06:45:10,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:10,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:10,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:10,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:10,210 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:10,338 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 06:45:10,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:10,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:45:10,339 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:10,340 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:45:10,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:45:10,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:45:10,341 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand 3 states. [2019-09-10 06:45:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:10,388 INFO L93 Difference]: Finished difference Result 204 states and 306 transitions. [2019-09-10 06:45:10,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:45:10,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-09-10 06:45:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:10,392 INFO L225 Difference]: With dead ends: 204 [2019-09-10 06:45:10,393 INFO L226 Difference]: Without dead ends: 204 [2019-09-10 06:45:10,394 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 06:45:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-09-10 06:45:10,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2019-09-10 06:45:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-09-10 06:45:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2019-09-10 06:45:10,416 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 42 [2019-09-10 06:45:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:10,417 INFO L475 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2019-09-10 06:45:10,417 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:45:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2019-09-10 06:45:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-10 06:45:10,419 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:10,419 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] [2019-09-10 06:45:10,420 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:10,420 INFO L82 PathProgramCache]: Analyzing trace with hash -511864306, now seen corresponding path program 1 times [2019-09-10 06:45:10,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:10,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:10,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:10,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:10,423 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:10,584 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 06:45:10,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:10,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:45:10,585 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:10,585 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:45:10,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:45:10,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:45:10,586 INFO L87 Difference]: Start difference. First operand 202 states and 305 transitions. Second operand 3 states. [2019-09-10 06:45:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:10,628 INFO L93 Difference]: Finished difference Result 316 states and 478 transitions. [2019-09-10 06:45:10,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:45:10,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-09-10 06:45:10,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:10,636 INFO L225 Difference]: With dead ends: 316 [2019-09-10 06:45:10,637 INFO L226 Difference]: Without dead ends: 316 [2019-09-10 06:45:10,637 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 06:45:10,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2019-09-10 06:45:10,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 314. [2019-09-10 06:45:10,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2019-09-10 06:45:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 477 transitions. [2019-09-10 06:45:10,676 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 477 transitions. Word has length 43 [2019-09-10 06:45:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:10,676 INFO L475 AbstractCegarLoop]: Abstraction has 314 states and 477 transitions. [2019-09-10 06:45:10,677 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:45:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 477 transitions. [2019-09-10 06:45:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-10 06:45:10,680 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:10,681 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] [2019-09-10 06:45:10,681 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1963926839, now seen corresponding path program 1 times [2019-09-10 06:45:10,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:10,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:10,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:10,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:10,685 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:10,807 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 06:45:10,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:10,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:45:10,808 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:10,808 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:45:10,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:45:10,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:45:10,809 INFO L87 Difference]: Start difference. First operand 314 states and 477 transitions. Second operand 5 states. [2019-09-10 06:45:10,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:10,934 INFO L93 Difference]: Finished difference Result 1184 states and 1820 transitions. [2019-09-10 06:45:10,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:45:10,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-09-10 06:45:10,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:10,942 INFO L225 Difference]: With dead ends: 1184 [2019-09-10 06:45:10,942 INFO L226 Difference]: Without dead ends: 1184 [2019-09-10 06:45:10,943 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 06:45:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2019-09-10 06:45:10,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 602. [2019-09-10 06:45:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-09-10 06:45:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 913 transitions. [2019-09-10 06:45:10,975 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 913 transitions. Word has length 44 [2019-09-10 06:45:10,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:10,976 INFO L475 AbstractCegarLoop]: Abstraction has 602 states and 913 transitions. [2019-09-10 06:45:10,976 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:45:10,976 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 913 transitions. [2019-09-10 06:45:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-10 06:45:10,978 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:10,978 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] [2019-09-10 06:45:10,979 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:10,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:10,979 INFO L82 PathProgramCache]: Analyzing trace with hash 733657067, now seen corresponding path program 1 times [2019-09-10 06:45:10,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:10,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:10,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:10,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:10,981 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:11,081 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 06:45:11,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:11,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:45:11,082 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:11,083 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:45:11,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:45:11,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:45:11,084 INFO L87 Difference]: Start difference. First operand 602 states and 913 transitions. Second operand 5 states. [2019-09-10 06:45:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:11,164 INFO L93 Difference]: Finished difference Result 1494 states and 2243 transitions. [2019-09-10 06:45:11,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:45:11,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2019-09-10 06:45:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:11,173 INFO L225 Difference]: With dead ends: 1494 [2019-09-10 06:45:11,174 INFO L226 Difference]: Without dead ends: 1494 [2019-09-10 06:45:11,174 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:45:11,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2019-09-10 06:45:11,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1490. [2019-09-10 06:45:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2019-09-10 06:45:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2241 transitions. [2019-09-10 06:45:11,216 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2241 transitions. Word has length 45 [2019-09-10 06:45:11,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:11,216 INFO L475 AbstractCegarLoop]: Abstraction has 1490 states and 2241 transitions. [2019-09-10 06:45:11,216 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:45:11,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2241 transitions. [2019-09-10 06:45:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-10 06:45:11,218 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:11,218 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] [2019-09-10 06:45:11,218 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:11,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:11,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1649759948, now seen corresponding path program 1 times [2019-09-10 06:45:11,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:11,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:11,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:11,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:11,221 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:11,305 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 06:45:11,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:11,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:45:11,305 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:11,306 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:45:11,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:45:11,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:45:11,307 INFO L87 Difference]: Start difference. First operand 1490 states and 2241 transitions. Second operand 5 states. [2019-09-10 06:45:11,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:11,512 INFO L93 Difference]: Finished difference Result 2516 states and 3754 transitions. [2019-09-10 06:45:11,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:45:11,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-09-10 06:45:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:11,528 INFO L225 Difference]: With dead ends: 2516 [2019-09-10 06:45:11,528 INFO L226 Difference]: Without dead ends: 2516 [2019-09-10 06:45:11,529 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 06:45:11,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2019-09-10 06:45:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 2514. [2019-09-10 06:45:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2514 states. [2019-09-10 06:45:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3753 transitions. [2019-09-10 06:45:11,624 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3753 transitions. Word has length 47 [2019-09-10 06:45:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:11,626 INFO L475 AbstractCegarLoop]: Abstraction has 2514 states and 3753 transitions. [2019-09-10 06:45:11,626 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:45:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3753 transitions. [2019-09-10 06:45:11,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-10 06:45:11,633 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:11,638 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] [2019-09-10 06:45:11,638 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:11,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:11,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1830795353, now seen corresponding path program 1 times [2019-09-10 06:45:11,644 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:11,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:11,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:11,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:11,647 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:11,789 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 06:45:11,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:11,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:45:11,790 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:11,790 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:45:11,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:45:11,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:45:11,791 INFO L87 Difference]: Start difference. First operand 2514 states and 3753 transitions. Second operand 5 states. [2019-09-10 06:45:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:11,880 INFO L93 Difference]: Finished difference Result 5162 states and 7561 transitions. [2019-09-10 06:45:11,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 06:45:11,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-09-10 06:45:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:11,913 INFO L225 Difference]: With dead ends: 5162 [2019-09-10 06:45:11,913 INFO L226 Difference]: Without dead ends: 5162 [2019-09-10 06:45:11,914 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 06:45:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2019-09-10 06:45:12,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 2674. [2019-09-10 06:45:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2674 states. [2019-09-10 06:45:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3913 transitions. [2019-09-10 06:45:12,018 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3913 transitions. Word has length 47 [2019-09-10 06:45:12,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:12,018 INFO L475 AbstractCegarLoop]: Abstraction has 2674 states and 3913 transitions. [2019-09-10 06:45:12,018 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:45:12,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3913 transitions. [2019-09-10 06:45:12,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-09-10 06:45:12,021 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:12,021 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] [2019-09-10 06:45:12,022 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:12,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:12,022 INFO L82 PathProgramCache]: Analyzing trace with hash 929700792, now seen corresponding path program 1 times [2019-09-10 06:45:12,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:12,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:12,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:12,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:12,024 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:12,080 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 06:45:12,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:12,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:45:12,081 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:12,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:45:12,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:45:12,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:45:12,082 INFO L87 Difference]: Start difference. First operand 2674 states and 3913 transitions. Second operand 3 states. [2019-09-10 06:45:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:12,117 INFO L93 Difference]: Finished difference Result 3346 states and 4848 transitions. [2019-09-10 06:45:12,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:45:12,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-09-10 06:45:12,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:12,134 INFO L225 Difference]: With dead ends: 3346 [2019-09-10 06:45:12,135 INFO L226 Difference]: Without dead ends: 3346 [2019-09-10 06:45:12,135 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 06:45:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2019-09-10 06:45:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 3344. [2019-09-10 06:45:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3344 states. [2019-09-10 06:45:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4847 transitions. [2019-09-10 06:45:12,217 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4847 transitions. Word has length 48 [2019-09-10 06:45:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:12,219 INFO L475 AbstractCegarLoop]: Abstraction has 3344 states and 4847 transitions. [2019-09-10 06:45:12,219 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:45:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4847 transitions. [2019-09-10 06:45:12,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 06:45:12,222 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:12,223 INFO L399 BasicCegarLoop]: trace histogram [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 06:45:12,223 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:12,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1357425763, now seen corresponding path program 1 times [2019-09-10 06:45:12,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:12,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:12,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:12,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:12,225 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 06:45:12,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:12,445 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:45:12,447 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 66 with the following transitions: [2019-09-10 06:45:12,450 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [122], [127], [140], [142], [155], [163], [182], [193], [195], [208], [216], [235], [246], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:45:12,519 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:45:12,520 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:45:12,708 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:45:13,139 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:45:13,142 INFO L272 AbstractInterpreter]: Visited 59 different actions 351 times. Merged at 35 different actions 250 times. Widened at 13 different actions 37 times. Performed 1200 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1200 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 36 fixpoints after 12 different actions. Largest state had 97 variables. [2019-09-10 06:45:13,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:13,148 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:45:13,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:13,148 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 06:45:13,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:13,169 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:45:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:13,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-10 06:45:13,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:45:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 06:45:13,320 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:45:13,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:13,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:45:13,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:45:13,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2019-09-10 06:45:13,409 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:45:13,410 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:45:13,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:45:13,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-09-10 06:45:13,411 INFO L87 Difference]: Start difference. First operand 3344 states and 4847 transitions. Second operand 5 states. [2019-09-10 06:45:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:13,510 INFO L93 Difference]: Finished difference Result 6060 states and 8689 transitions. [2019-09-10 06:45:13,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:45:13,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2019-09-10 06:45:13,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:13,540 INFO L225 Difference]: With dead ends: 6060 [2019-09-10 06:45:13,540 INFO L226 Difference]: Without dead ends: 6060 [2019-09-10 06:45:13,540 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-09-10 06:45:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2019-09-10 06:45:13,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 5752. [2019-09-10 06:45:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5752 states. [2019-09-10 06:45:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5752 states to 5752 states and 8255 transitions. [2019-09-10 06:45:13,727 INFO L78 Accepts]: Start accepts. Automaton has 5752 states and 8255 transitions. Word has length 65 [2019-09-10 06:45:13,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:13,730 INFO L475 AbstractCegarLoop]: Abstraction has 5752 states and 8255 transitions. [2019-09-10 06:45:13,730 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:45:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5752 states and 8255 transitions. [2019-09-10 06:45:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:45:13,750 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:13,751 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:13,751 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:13,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:13,752 INFO L82 PathProgramCache]: Analyzing trace with hash -157142588, now seen corresponding path program 1 times [2019-09-10 06:45:13,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:13,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:13,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:13,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:13,757 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:45:13,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:13,905 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:45:13,906 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-09-10 06:45:13,906 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [155], [163], [182], [193], [195], [208], [216], [235], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:45:13,914 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:45:13,914 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:45:13,948 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:45:14,186 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:45:14,186 INFO L272 AbstractInterpreter]: Visited 56 different actions 263 times. Merged at 29 different actions 173 times. Widened at 10 different actions 19 times. Performed 974 root evaluator evaluations with a maximum evaluation depth of 5. Performed 974 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 16 fixpoints after 5 different actions. Largest state had 97 variables. [2019-09-10 06:45:14,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:14,187 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:45:14,344 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 81.17% of their original sizes. [2019-09-10 06:45:14,344 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:45:16,171 INFO L420 sIntCurrentIteration]: We unified 65 AI predicates to 65 [2019-09-10 06:45:16,171 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:45:16,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:45:16,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [40] imperfect sequences [7] total 45 [2019-09-10 06:45:16,172 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:16,173 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-09-10 06:45:16,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-09-10 06:45:16,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2019-09-10 06:45:16,174 INFO L87 Difference]: Start difference. First operand 5752 states and 8255 transitions. Second operand 40 states. [2019-09-10 06:45:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:38,015 INFO L93 Difference]: Finished difference Result 13628 states and 19131 transitions. [2019-09-10 06:45:38,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2019-09-10 06:45:38,015 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 66 [2019-09-10 06:45:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:38,110 INFO L225 Difference]: With dead ends: 13628 [2019-09-10 06:45:38,111 INFO L226 Difference]: Without dead ends: 13628 [2019-09-10 06:45:38,122 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3572, Invalid=20608, Unknown=0, NotChecked=0, Total=24180 [2019-09-10 06:45:38,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13628 states. [2019-09-10 06:45:38,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13628 to 7847. [2019-09-10 06:45:38,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7847 states. [2019-09-10 06:45:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7847 states to 7847 states and 11095 transitions. [2019-09-10 06:45:38,398 INFO L78 Accepts]: Start accepts. Automaton has 7847 states and 11095 transitions. Word has length 66 [2019-09-10 06:45:38,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:38,398 INFO L475 AbstractCegarLoop]: Abstraction has 7847 states and 11095 transitions. [2019-09-10 06:45:38,399 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-09-10 06:45:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 7847 states and 11095 transitions. [2019-09-10 06:45:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:45:38,403 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:38,403 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:38,404 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:38,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:38,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1635593437, now seen corresponding path program 1 times [2019-09-10 06:45:38,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:38,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:38,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:38,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:38,408 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:45:38,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:38,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:45:38,483 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:38,483 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:45:38,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:45:38,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:45:38,484 INFO L87 Difference]: Start difference. First operand 7847 states and 11095 transitions. Second operand 3 states. [2019-09-10 06:45:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:38,542 INFO L93 Difference]: Finished difference Result 10916 states and 15127 transitions. [2019-09-10 06:45:38,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:45:38,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-10 06:45:38,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:38,576 INFO L225 Difference]: With dead ends: 10916 [2019-09-10 06:45:38,576 INFO L226 Difference]: Without dead ends: 10916 [2019-09-10 06:45:38,577 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 06:45:38,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10916 states. [2019-09-10 06:45:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10916 to 10259. [2019-09-10 06:45:38,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10259 states. [2019-09-10 06:45:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10259 states to 10259 states and 14293 transitions. [2019-09-10 06:45:38,765 INFO L78 Accepts]: Start accepts. Automaton has 10259 states and 14293 transitions. Word has length 66 [2019-09-10 06:45:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:38,766 INFO L475 AbstractCegarLoop]: Abstraction has 10259 states and 14293 transitions. [2019-09-10 06:45:38,766 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:45:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 10259 states and 14293 transitions. [2019-09-10 06:45:38,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:45:38,770 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:38,770 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:38,771 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:38,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:38,771 INFO L82 PathProgramCache]: Analyzing trace with hash 230389696, now seen corresponding path program 1 times [2019-09-10 06:45:38,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:38,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:38,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:38,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:38,774 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:45:38,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:38,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:45:38,825 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:38,825 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:45:38,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:45:38,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:45:38,827 INFO L87 Difference]: Start difference. First operand 10259 states and 14293 transitions. Second operand 3 states. [2019-09-10 06:45:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:38,874 INFO L93 Difference]: Finished difference Result 13680 states and 18758 transitions. [2019-09-10 06:45:38,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:45:38,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-10 06:45:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:38,901 INFO L225 Difference]: With dead ends: 13680 [2019-09-10 06:45:38,901 INFO L226 Difference]: Without dead ends: 13680 [2019-09-10 06:45:38,902 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 06:45:38,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13680 states. [2019-09-10 06:45:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13680 to 13653. [2019-09-10 06:45:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13653 states. [2019-09-10 06:45:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13653 states to 13653 states and 18732 transitions. [2019-09-10 06:45:39,118 INFO L78 Accepts]: Start accepts. Automaton has 13653 states and 18732 transitions. Word has length 66 [2019-09-10 06:45:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:39,118 INFO L475 AbstractCegarLoop]: Abstraction has 13653 states and 18732 transitions. [2019-09-10 06:45:39,119 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:45:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 13653 states and 18732 transitions. [2019-09-10 06:45:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:45:39,123 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:39,125 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:39,125 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:39,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:39,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1248061153, now seen corresponding path program 1 times [2019-09-10 06:45:39,126 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:39,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:39,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:39,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:39,129 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:45:39,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:39,217 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:45:39,217 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-09-10 06:45:39,218 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [80], [83], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [155], [163], [182], [184], [187], [195], [198], [201], [204], [206], [208], [246], [248], [261], [269], [288], [310], [311], [315], [316], [317] [2019-09-10 06:45:39,224 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:45:39,225 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:45:39,240 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:45:39,362 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:45:39,363 INFO L272 AbstractInterpreter]: Visited 56 different actions 261 times. Merged at 29 different actions 173 times. Widened at 8 different actions 15 times. Performed 979 root evaluator evaluations with a maximum evaluation depth of 5. Performed 979 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 14 fixpoints after 6 different actions. Largest state had 97 variables. [2019-09-10 06:45:39,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:39,363 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:45:39,468 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 81.18% of their original sizes. [2019-09-10 06:45:39,468 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:45:41,320 INFO L420 sIntCurrentIteration]: We unified 65 AI predicates to 65 [2019-09-10 06:45:41,321 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:45:41,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:45:41,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [42] imperfect sequences [7] total 47 [2019-09-10 06:45:41,321 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:41,322 INFO L454 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-09-10 06:45:41,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-09-10 06:45:41,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2019-09-10 06:45:41,323 INFO L87 Difference]: Start difference. First operand 13653 states and 18732 transitions. Second operand 42 states. [2019-09-10 06:46:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:46:08,841 INFO L93 Difference]: Finished difference Result 28812 states and 38850 transitions. [2019-09-10 06:46:08,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2019-09-10 06:46:08,841 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 66 [2019-09-10 06:46:08,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:46:08,896 INFO L225 Difference]: With dead ends: 28812 [2019-09-10 06:46:08,896 INFO L226 Difference]: Without dead ends: 28812 [2019-09-10 06:46:08,902 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6613 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2957, Invalid=16503, Unknown=0, NotChecked=0, Total=19460 [2019-09-10 06:46:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28812 states. [2019-09-10 06:46:09,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28812 to 17184. [2019-09-10 06:46:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17184 states. [2019-09-10 06:46:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17184 states to 17184 states and 23349 transitions. [2019-09-10 06:46:09,246 INFO L78 Accepts]: Start accepts. Automaton has 17184 states and 23349 transitions. Word has length 66 [2019-09-10 06:46:09,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:46:09,247 INFO L475 AbstractCegarLoop]: Abstraction has 17184 states and 23349 transitions. [2019-09-10 06:46:09,247 INFO L476 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-09-10 06:46:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 17184 states and 23349 transitions. [2019-09-10 06:46:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:46:09,254 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:46:09,254 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:09,255 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:46:09,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:46:09,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1734896984, now seen corresponding path program 1 times [2019-09-10 06:46:09,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:46:09,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:46:09,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:46:09,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:46:09,258 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:46:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:46:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:46:09,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:46:09,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:46:09,314 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:46:09,316 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:46:09,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:46:09,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:46:09,318 INFO L87 Difference]: Start difference. First operand 17184 states and 23349 transitions. Second operand 3 states. [2019-09-10 06:46:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:46:09,381 INFO L93 Difference]: Finished difference Result 18947 states and 25121 transitions. [2019-09-10 06:46:09,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:46:09,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-10 06:46:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:46:09,415 INFO L225 Difference]: With dead ends: 18947 [2019-09-10 06:46:09,415 INFO L226 Difference]: Without dead ends: 15983 [2019-09-10 06:46:09,416 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 06:46:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15983 states. [2019-09-10 06:46:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15983 to 15014. [2019-09-10 06:46:09,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15014 states. [2019-09-10 06:46:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15014 states to 15014 states and 20071 transitions. [2019-09-10 06:46:09,618 INFO L78 Accepts]: Start accepts. Automaton has 15014 states and 20071 transitions. Word has length 66 [2019-09-10 06:46:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:46:09,618 INFO L475 AbstractCegarLoop]: Abstraction has 15014 states and 20071 transitions. [2019-09-10 06:46:09,618 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:46:09,618 INFO L276 IsEmpty]: Start isEmpty. Operand 15014 states and 20071 transitions. [2019-09-10 06:46:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:46:09,623 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:46:09,626 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:09,627 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:46:09,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:46:09,627 INFO L82 PathProgramCache]: Analyzing trace with hash 612922476, now seen corresponding path program 1 times [2019-09-10 06:46:09,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:46:09,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:46:09,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:46:09,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:46:09,629 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:46:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:46:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:46:09,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:46:09,722 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:46:09,722 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-09-10 06:46:09,723 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [193], [195], [208], [216], [235], [246], [248], [261], [269], [288], [310], [311], [315], [316], [317] [2019-09-10 06:46:09,726 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:46:09,726 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:46:09,736 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:46:10,332 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:46:10,333 INFO L272 AbstractInterpreter]: Visited 56 different actions 314 times. Merged at 29 different actions 218 times. Widened at 10 different actions 24 times. Performed 1097 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1097 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 18 fixpoints after 6 different actions. Largest state had 97 variables. [2019-09-10 06:46:10,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:46:10,334 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:46:10,401 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 81.42% of their original sizes. [2019-09-10 06:46:10,401 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:46:11,872 INFO L420 sIntCurrentIteration]: We unified 65 AI predicates to 65 [2019-09-10 06:46:11,872 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:46:11,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:46:11,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [40] imperfect sequences [7] total 45 [2019-09-10 06:46:11,873 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:46:11,873 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-09-10 06:46:11,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-09-10 06:46:11,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2019-09-10 06:46:11,875 INFO L87 Difference]: Start difference. First operand 15014 states and 20071 transitions. Second operand 40 states. [2019-09-10 06:46:44,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:46:44,250 INFO L93 Difference]: Finished difference Result 27977 states and 36735 transitions. [2019-09-10 06:46:44,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2019-09-10 06:46:44,250 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 66 [2019-09-10 06:46:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:46:44,304 INFO L225 Difference]: With dead ends: 27977 [2019-09-10 06:46:44,304 INFO L226 Difference]: Without dead ends: 27956 [2019-09-10 06:46:44,313 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27242 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=9657, Invalid=57165, Unknown=0, NotChecked=0, Total=66822 [2019-09-10 06:46:44,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27956 states. [2019-09-10 06:46:44,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27956 to 16848. [2019-09-10 06:46:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16848 states. [2019-09-10 06:46:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16848 states to 16848 states and 22228 transitions. [2019-09-10 06:46:44,578 INFO L78 Accepts]: Start accepts. Automaton has 16848 states and 22228 transitions. Word has length 66 [2019-09-10 06:46:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:46:44,578 INFO L475 AbstractCegarLoop]: Abstraction has 16848 states and 22228 transitions. [2019-09-10 06:46:44,578 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-09-10 06:46:44,579 INFO L276 IsEmpty]: Start isEmpty. Operand 16848 states and 22228 transitions. [2019-09-10 06:46:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:46:44,585 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:46:44,586 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:44,586 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:46:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:46:44,587 INFO L82 PathProgramCache]: Analyzing trace with hash -622024686, now seen corresponding path program 1 times [2019-09-10 06:46:44,587 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:46:44,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:46:44,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:46:44,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:46:44,592 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:46:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:46:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:46:44,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:46:44,707 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:46:44,708 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 69 with the following transitions: [2019-09-10 06:46:44,709 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [155], [163], [182], [193], [195], [198], [201], [204], [206], [208], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:46:44,719 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:46:44,720 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:46:44,731 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:46:44,834 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:46:44,835 INFO L272 AbstractInterpreter]: Visited 58 different actions 274 times. Merged at 31 different actions 183 times. Widened at 11 different actions 22 times. Performed 1011 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1011 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 15 fixpoints after 9 different actions. Largest state had 98 variables. [2019-09-10 06:46:44,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:46:44,835 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:46:44,942 INFO L227 lantSequenceWeakener]: Weakened 42 states. On average, predicates are now at 81.79% of their original sizes. [2019-09-10 06:46:44,942 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:46:46,397 INFO L420 sIntCurrentIteration]: We unified 67 AI predicates to 67 [2019-09-10 06:46:46,397 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:46:46,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:46:46,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [41] imperfect sequences [7] total 46 [2019-09-10 06:46:46,398 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:46:46,398 INFO L454 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-09-10 06:46:46,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-09-10 06:46:46,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1438, Unknown=0, NotChecked=0, Total=1640 [2019-09-10 06:46:46,399 INFO L87 Difference]: Start difference. First operand 16848 states and 22228 transitions. Second operand 41 states. [2019-09-10 06:47:08,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:47:08,597 INFO L93 Difference]: Finished difference Result 29466 states and 38781 transitions. [2019-09-10 06:47:08,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2019-09-10 06:47:08,597 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 68 [2019-09-10 06:47:08,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:47:08,658 INFO L225 Difference]: With dead ends: 29466 [2019-09-10 06:47:08,658 INFO L226 Difference]: Without dead ends: 29466 [2019-09-10 06:47:08,661 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11421 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=4654, Invalid=27208, Unknown=0, NotChecked=0, Total=31862 [2019-09-10 06:47:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29466 states. [2019-09-10 06:47:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29466 to 17516. [2019-09-10 06:47:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17516 states. [2019-09-10 06:47:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17516 states to 17516 states and 23078 transitions. [2019-09-10 06:47:08,954 INFO L78 Accepts]: Start accepts. Automaton has 17516 states and 23078 transitions. Word has length 68 [2019-09-10 06:47:08,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:47:08,955 INFO L475 AbstractCegarLoop]: Abstraction has 17516 states and 23078 transitions. [2019-09-10 06:47:08,955 INFO L476 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-09-10 06:47:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 17516 states and 23078 transitions. [2019-09-10 06:47:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:47:08,961 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:47:08,961 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:08,961 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:47:08,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:47:08,962 INFO L82 PathProgramCache]: Analyzing trace with hash -2100475535, now seen corresponding path program 1 times [2019-09-10 06:47:08,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:47:08,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:08,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:47:08,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:08,964 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:47:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:47:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:47:09,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:47:09,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:47:09,036 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:47:09,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:47:09,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:47:09,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:47:09,037 INFO L87 Difference]: Start difference. First operand 17516 states and 23078 transitions. Second operand 5 states. [2019-09-10 06:47:09,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:47:09,163 INFO L93 Difference]: Finished difference Result 23804 states and 31710 transitions. [2019-09-10 06:47:09,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:47:09,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 06:47:09,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:47:09,217 INFO L225 Difference]: With dead ends: 23804 [2019-09-10 06:47:09,217 INFO L226 Difference]: Without dead ends: 23791 [2019-09-10 06:47:09,219 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-10 06:47:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23791 states. [2019-09-10 06:47:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23791 to 21654. [2019-09-10 06:47:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21654 states. [2019-09-10 06:47:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21654 states to 21654 states and 28676 transitions. [2019-09-10 06:47:09,581 INFO L78 Accepts]: Start accepts. Automaton has 21654 states and 28676 transitions. Word has length 68 [2019-09-10 06:47:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:47:09,582 INFO L475 AbstractCegarLoop]: Abstraction has 21654 states and 28676 transitions. [2019-09-10 06:47:09,582 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:47:09,582 INFO L276 IsEmpty]: Start isEmpty. Operand 21654 states and 28676 transitions. [2019-09-10 06:47:09,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:47:09,599 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:47:09,599 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:09,600 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:47:09,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:47:09,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1725794774, now seen corresponding path program 1 times [2019-09-10 06:47:09,600 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:47:09,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:09,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:47:09,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:09,611 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:47:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:47:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 06:47:09,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:47:09,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:47:09,712 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:47:09,713 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:47:09,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:47:09,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:47:09,714 INFO L87 Difference]: Start difference. First operand 21654 states and 28676 transitions. Second operand 5 states. [2019-09-10 06:47:09,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:47:09,886 INFO L93 Difference]: Finished difference Result 28057 states and 37518 transitions. [2019-09-10 06:47:09,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:47:09,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 06:47:09,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:47:09,958 INFO L225 Difference]: With dead ends: 28057 [2019-09-10 06:47:09,958 INFO L226 Difference]: Without dead ends: 28031 [2019-09-10 06:47:09,959 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-10 06:47:09,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28031 states. [2019-09-10 06:47:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28031 to 24056. [2019-09-10 06:47:10,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24056 states. [2019-09-10 06:47:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24056 states to 24056 states and 31960 transitions. [2019-09-10 06:47:10,282 INFO L78 Accepts]: Start accepts. Automaton has 24056 states and 31960 transitions. Word has length 68 [2019-09-10 06:47:10,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:47:10,282 INFO L475 AbstractCegarLoop]: Abstraction has 24056 states and 31960 transitions. [2019-09-10 06:47:10,282 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:47:10,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24056 states and 31960 transitions. [2019-09-10 06:47:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:47:10,289 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:47:10,289 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:10,290 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:47:10,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:47:10,290 INFO L82 PathProgramCache]: Analyzing trace with hash -239491906, now seen corresponding path program 1 times [2019-09-10 06:47:10,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:47:10,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:10,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:47:10,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:10,292 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:47:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:47:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:47:10,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:47:10,375 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:47:10,375 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 69 with the following transitions: [2019-09-10 06:47:10,376 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [193], [195], [208], [216], [235], [246], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:47:10,378 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:47:10,378 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:47:10,389 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:47:10,525 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:47:10,526 INFO L272 AbstractInterpreter]: Visited 58 different actions 392 times. Merged at 31 different actions 283 times. Widened at 13 different actions 47 times. Performed 1321 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1321 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 20 fixpoints after 9 different actions. Largest state had 98 variables. [2019-09-10 06:47:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:47:10,526 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:47:10,586 INFO L227 lantSequenceWeakener]: Weakened 42 states. On average, predicates are now at 82.17% of their original sizes. [2019-09-10 06:47:10,587 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:47:12,190 INFO L420 sIntCurrentIteration]: We unified 67 AI predicates to 67 [2019-09-10 06:47:12,191 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:47:12,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:47:12,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [42] imperfect sequences [7] total 47 [2019-09-10 06:47:12,191 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:47:12,192 INFO L454 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-09-10 06:47:12,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-09-10 06:47:12,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1520, Unknown=0, NotChecked=0, Total=1722 [2019-09-10 06:47:12,193 INFO L87 Difference]: Start difference. First operand 24056 states and 31960 transitions. Second operand 42 states. [2019-09-10 06:47:53,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:47:53,828 INFO L93 Difference]: Finished difference Result 49353 states and 64056 transitions. [2019-09-10 06:47:53,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 393 states. [2019-09-10 06:47:53,829 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 68 [2019-09-10 06:47:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:47:53,878 INFO L225 Difference]: With dead ends: 49353 [2019-09-10 06:47:53,878 INFO L226 Difference]: Without dead ends: 49249 [2019-09-10 06:47:53,892 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76630 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=20037, Invalid=149295, Unknown=0, NotChecked=0, Total=169332 [2019-09-10 06:47:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49249 states. [2019-09-10 06:47:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49249 to 27254. [2019-09-10 06:47:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27254 states. [2019-09-10 06:47:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27254 states to 27254 states and 35844 transitions. [2019-09-10 06:47:54,265 INFO L78 Accepts]: Start accepts. Automaton has 27254 states and 35844 transitions. Word has length 68 [2019-09-10 06:47:54,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:47:54,265 INFO L475 AbstractCegarLoop]: Abstraction has 27254 states and 35844 transitions. [2019-09-10 06:47:54,265 INFO L476 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-09-10 06:47:54,266 INFO L276 IsEmpty]: Start isEmpty. Operand 27254 states and 35844 transitions. [2019-09-10 06:47:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:47:54,272 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:47:54,272 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:54,272 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:47:54,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:47:54,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1483121734, now seen corresponding path program 1 times [2019-09-10 06:47:54,273 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:47:54,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:54,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:47:54,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:54,274 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:47:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:47:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 06:47:54,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:47:54,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:47:54,358 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:47:54,358 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:47:54,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:47:54,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:47:54,359 INFO L87 Difference]: Start difference. First operand 27254 states and 35844 transitions. Second operand 5 states. [2019-09-10 06:47:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:47:54,549 INFO L93 Difference]: Finished difference Result 33167 states and 43954 transitions. [2019-09-10 06:47:54,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:47:54,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 06:47:54,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:47:54,591 INFO L225 Difference]: With dead ends: 33167 [2019-09-10 06:47:54,591 INFO L226 Difference]: Without dead ends: 33167 [2019-09-10 06:47:54,592 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-10 06:47:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33167 states. [2019-09-10 06:47:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33167 to 30378. [2019-09-10 06:47:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30378 states. [2019-09-10 06:47:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30378 states to 30378 states and 40076 transitions. [2019-09-10 06:47:55,207 INFO L78 Accepts]: Start accepts. Automaton has 30378 states and 40076 transitions. Word has length 68 [2019-09-10 06:47:55,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:47:55,208 INFO L475 AbstractCegarLoop]: Abstraction has 30378 states and 40076 transitions. [2019-09-10 06:47:55,208 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:47:55,208 INFO L276 IsEmpty]: Start isEmpty. Operand 30378 states and 40076 transitions. [2019-09-10 06:47:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-10 06:47:55,215 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:47:55,215 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:55,215 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:47:55,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:47:55,216 INFO L82 PathProgramCache]: Analyzing trace with hash -930263548, now seen corresponding path program 1 times [2019-09-10 06:47:55,216 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:47:55,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:55,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:47:55,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:55,218 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:47:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:47:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:47:55,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:47:55,301 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:47:55,302 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 72 with the following transitions: [2019-09-10 06:47:55,302 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [193], [195], [208], [216], [235], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:47:55,305 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:47:55,305 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:47:55,315 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:47:55,452 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:47:55,452 INFO L272 AbstractInterpreter]: Visited 62 different actions 368 times. Merged at 35 different actions 262 times. Widened at 12 different actions 38 times. Performed 1264 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1264 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 19 fixpoints after 9 different actions. Largest state had 98 variables. [2019-09-10 06:47:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:47:55,453 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:47:55,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:47:55,453 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:47:55,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:47:55,472 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:47:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:47:55,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 06:47:55,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:47:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:47:55,654 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:47:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:47:55,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:47:55,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2019-09-10 06:47:55,745 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:47:55,746 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 06:47:55,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 06:47:55,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-10 06:47:55,748 INFO L87 Difference]: Start difference. First operand 30378 states and 40076 transitions. Second operand 11 states. [2019-09-10 06:47:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:47:56,191 INFO L93 Difference]: Finished difference Result 56400 states and 74072 transitions. [2019-09-10 06:47:56,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-10 06:47:56,192 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2019-09-10 06:47:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:47:56,241 INFO L225 Difference]: With dead ends: 56400 [2019-09-10 06:47:56,241 INFO L226 Difference]: Without dead ends: 56400 [2019-09-10 06:47:56,241 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-09-10 06:47:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56400 states. [2019-09-10 06:47:56,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56400 to 34468. [2019-09-10 06:47:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34468 states. [2019-09-10 06:47:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34468 states to 34468 states and 45552 transitions. [2019-09-10 06:47:56,606 INFO L78 Accepts]: Start accepts. Automaton has 34468 states and 45552 transitions. Word has length 71 [2019-09-10 06:47:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:47:56,606 INFO L475 AbstractCegarLoop]: Abstraction has 34468 states and 45552 transitions. [2019-09-10 06:47:56,606 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 06:47:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 34468 states and 45552 transitions. [2019-09-10 06:47:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-10 06:47:56,613 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:47:56,614 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:56,614 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:47:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:47:56,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1158196279, now seen corresponding path program 1 times [2019-09-10 06:47:56,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:47:56,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:56,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:47:56,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:56,616 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:47:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:47:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:47:56,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:47:56,680 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:47:56,680 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 72 with the following transitions: [2019-09-10 06:47:56,680 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [80], [83], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [184], [187], [195], [198], [201], [204], [206], [208], [246], [248], [261], [269], [288], [310], [311], [315], [316], [317] [2019-09-10 06:47:56,682 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:47:56,682 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:47:56,690 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:47:56,822 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:47:56,823 INFO L272 AbstractInterpreter]: Visited 62 different actions 412 times. Merged at 37 different actions 307 times. Widened at 15 different actions 43 times. Performed 1362 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1362 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 21 fixpoints after 9 different actions. Largest state had 98 variables. [2019-09-10 06:47:56,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:47:56,823 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:47:56,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:47:56,823 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 06:47:56,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:47:56,843 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:47:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:47:56,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 06:47:56,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:47:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:47:56,996 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:47:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:47:57,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:47:57,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2019-09-10 06:47:57,037 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:47:57,038 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 06:47:57,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 06:47:57,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-10 06:47:57,045 INFO L87 Difference]: Start difference. First operand 34468 states and 45552 transitions. Second operand 11 states. [2019-09-10 06:47:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:47:57,553 INFO L93 Difference]: Finished difference Result 71522 states and 93801 transitions. [2019-09-10 06:47:57,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-10 06:47:57,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2019-09-10 06:47:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:47:57,618 INFO L225 Difference]: With dead ends: 71522 [2019-09-10 06:47:57,618 INFO L226 Difference]: Without dead ends: 71522 [2019-09-10 06:47:57,618 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-09-10 06:47:57,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71522 states. [2019-09-10 06:47:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71522 to 38484. [2019-09-10 06:47:58,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38484 states. [2019-09-10 06:47:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38484 states to 38484 states and 50979 transitions. [2019-09-10 06:47:58,308 INFO L78 Accepts]: Start accepts. Automaton has 38484 states and 50979 transitions. Word has length 71 [2019-09-10 06:47:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:47:58,308 INFO L475 AbstractCegarLoop]: Abstraction has 38484 states and 50979 transitions. [2019-09-10 06:47:58,308 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 06:47:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 38484 states and 50979 transitions. [2019-09-10 06:47:58,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-09-10 06:47:58,314 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:47:58,314 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:58,315 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:47:58,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:47:58,315 INFO L82 PathProgramCache]: Analyzing trace with hash 8068845, now seen corresponding path program 1 times [2019-09-10 06:47:58,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:47:58,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:58,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:47:58,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:47:58,316 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:47:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:47:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:47:58,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:47:58,520 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:47:58,520 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 74 with the following transitions: [2019-09-10 06:47:58,520 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [145], [148], [151], [153], [155], [184], [187], [195], [198], [201], [204], [206], [208], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:47:58,522 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:47:58,522 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:47:58,530 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:47:58,791 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:47:58,792 INFO L272 AbstractInterpreter]: Visited 68 different actions 491 times. Merged at 44 different actions 379 times. Widened at 14 different actions 48 times. Performed 1641 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1641 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 38 fixpoints after 11 different actions. Largest state had 99 variables. [2019-09-10 06:47:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:47:58,792 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:47:58,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:47:58,793 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 06:47:58,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:47:58,824 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:47:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:47:58,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 50 conjunts are in the unsatisfiable core [2019-09-10 06:47:58,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:47:59,756 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:47:59,757 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:47:59,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:48:00,082 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2019-09-10 06:48:00,345 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-09-10 06:48:00,790 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-10 06:48:00,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:48:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:48:01,464 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:48:02,785 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2019-09-10 06:48:03,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:48:03,067 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:48:03,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24, 23] total 50 [2019-09-10 06:48:03,067 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:48:03,067 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-10 06:48:03,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-10 06:48:03,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2063, Unknown=0, NotChecked=0, Total=2450 [2019-09-10 06:48:03,068 INFO L87 Difference]: Start difference. First operand 38484 states and 50979 transitions. Second operand 31 states. [2019-09-10 06:48:06,130 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-10 06:48:06,566 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 06:48:06,915 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2019-09-10 06:48:07,389 WARN L188 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-09-10 06:48:07,790 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-09-10 06:48:08,298 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-09-10 06:48:08,853 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:48:09,416 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-10 06:48:09,735 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2019-09-10 06:48:10,177 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 06:48:10,873 WARN L188 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-10 06:48:11,158 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-10 06:48:11,403 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:48:12,022 WARN L188 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 06:48:12,834 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-10 06:48:13,188 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2019-09-10 06:48:13,521 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 06:48:13,676 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 06:48:14,372 WARN L188 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 06:48:14,717 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-10 06:48:15,075 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-10 06:48:17,275 WARN L188 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-10 06:48:17,744 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 06:48:17,984 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-10 06:48:18,727 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 06:48:19,251 WARN L188 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:48:19,444 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2019-09-10 06:48:20,328 WARN L188 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 06:48:20,722 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-09-10 06:48:21,095 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-10 06:48:22,642 WARN L188 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 06:48:22,843 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-10 06:48:23,322 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:48:23,748 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-09-10 06:48:24,853 WARN L188 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 06:48:25,397 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2019-09-10 06:48:25,769 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:48:26,124 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:48:27,237 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 06:48:32,090 WARN L188 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 06:48:35,318 WARN L188 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2019-09-10 06:48:36,550 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-10 06:48:41,072 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-10 06:48:41,986 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2019-09-10 06:48:43,313 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-09-10 06:48:46,637 WARN L188 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-10 06:48:47,567 WARN L188 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 06:48:48,324 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-10 06:48:49,629 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2019-09-10 06:48:49,924 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:48:51,187 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-10 06:48:51,614 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 06:48:54,408 WARN L188 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-10 06:48:54,692 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 06:48:55,022 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 06:48:55,273 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-10 06:48:55,920 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-09-10 06:48:57,359 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-10 06:48:58,436 WARN L188 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-09-10 06:48:58,711 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-10 06:48:58,891 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-10 06:48:59,300 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-09-10 06:48:59,913 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-10 06:49:00,262 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2019-09-10 06:49:01,544 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 06:49:01,919 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 06:49:02,160 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-10 06:49:02,454 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-10 06:49:03,271 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:49:03,588 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:49:03,769 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-10 06:49:04,349 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2019-09-10 06:49:05,080 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-10 06:49:05,780 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 06:49:06,124 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 06:49:06,672 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 06:49:08,096 WARN L188 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 06:49:09,521 WARN L188 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2019-09-10 06:49:13,167 WARN L188 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 06:49:15,675 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-10 06:49:16,892 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-10 06:49:17,437 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-10 06:49:18,858 WARN L188 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-10 06:49:19,168 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-10 06:49:19,751 WARN L188 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 06:49:21,010 WARN L188 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:49:21,671 WARN L188 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-10 06:49:22,251 WARN L188 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 06:49:28,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:49:28,470 INFO L93 Difference]: Finished difference Result 726745 states and 952892 transitions. [2019-09-10 06:49:28,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 338 states. [2019-09-10 06:49:28,470 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 73 [2019-09-10 06:49:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:49:29,394 INFO L225 Difference]: With dead ends: 726745 [2019-09-10 06:49:29,395 INFO L226 Difference]: Without dead ends: 726448 [2019-09-10 06:49:29,400 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62597 ImplicationChecksByTransitivity, 65.4s TimeCoverageRelationStatistics Valid=24684, Invalid=119336, Unknown=0, NotChecked=0, Total=144020 [2019-09-10 06:49:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726448 states. [2019-09-10 06:49:35,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726448 to 327640. [2019-09-10 06:49:35,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327640 states. [2019-09-10 06:49:35,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327640 states to 327640 states and 437891 transitions. [2019-09-10 06:49:35,949 INFO L78 Accepts]: Start accepts. Automaton has 327640 states and 437891 transitions. Word has length 73 [2019-09-10 06:49:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:49:35,949 INFO L475 AbstractCegarLoop]: Abstraction has 327640 states and 437891 transitions. [2019-09-10 06:49:35,949 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-10 06:49:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 327640 states and 437891 transitions. [2019-09-10 06:49:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-09-10 06:49:35,954 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:49:35,955 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] [2019-09-10 06:49:35,955 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:49:35,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:49:35,955 INFO L82 PathProgramCache]: Analyzing trace with hash -174967646, now seen corresponding path program 1 times [2019-09-10 06:49:35,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:49:35,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:49:35,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:49:35,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:49:35,957 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:49:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:49:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:49:36,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:49:36,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:49:36,000 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:49:36,001 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:49:36,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:49:36,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:49:36,001 INFO L87 Difference]: Start difference. First operand 327640 states and 437891 transitions. Second operand 3 states. [2019-09-10 06:49:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:49:36,693 INFO L93 Difference]: Finished difference Result 272918 states and 360541 transitions. [2019-09-10 06:49:36,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:49:36,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2019-09-10 06:49:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:49:42,103 INFO L225 Difference]: With dead ends: 272918 [2019-09-10 06:49:42,104 INFO L226 Difference]: Without dead ends: 272918 [2019-09-10 06:49:42,104 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 06:49:42,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272918 states. [2019-09-10 06:49:44,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272918 to 223988. [2019-09-10 06:49:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223988 states. [2019-09-10 06:49:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223988 states to 223988 states and 294802 transitions. [2019-09-10 06:49:44,785 INFO L78 Accepts]: Start accepts. Automaton has 223988 states and 294802 transitions. Word has length 74 [2019-09-10 06:49:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:49:44,785 INFO L475 AbstractCegarLoop]: Abstraction has 223988 states and 294802 transitions. [2019-09-10 06:49:44,785 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:49:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 223988 states and 294802 transitions. [2019-09-10 06:49:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-09-10 06:49:44,789 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:49:44,789 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:44,790 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:49:44,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:49:44,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1720837308, now seen corresponding path program 1 times [2019-09-10 06:49:44,790 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:49:44,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:49:44,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:49:44,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:49:44,791 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:49:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:49:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:49:45,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:49:45,561 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:49:45,561 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 76 with the following transitions: [2019-09-10 06:49:45,562 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [86], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [195], [198], [201], [204], [206], [208], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:49:45,564 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:49:45,564 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:49:45,573 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:49:45,799 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:49:45,799 INFO L272 AbstractInterpreter]: Visited 70 different actions 608 times. Merged at 46 different actions 485 times. Widened at 16 different actions 79 times. Performed 2062 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2062 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 52 fixpoints after 18 different actions. Largest state had 99 variables. [2019-09-10 06:49:45,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:49:45,800 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:49:45,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:49:45,800 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 06:49:45,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:49:45,827 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 06:49:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:49:45,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-10 06:49:45,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:49:46,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:49:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:49:46,450 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:49:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:49:47,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:49:47,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 39 [2019-09-10 06:49:47,052 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:49:47,053 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 06:49:47,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 06:49:47,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1359, Unknown=0, NotChecked=0, Total=1482 [2019-09-10 06:49:47,053 INFO L87 Difference]: Start difference. First operand 223988 states and 294802 transitions. Second operand 28 states. [2019-09-10 06:49:50,481 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-10 06:49:52,787 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2019-09-10 06:49:52,997 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:49:53,196 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:49:53,446 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 06:49:55,362 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-09-10 06:49:56,444 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-10 06:49:56,656 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-09-10 06:49:56,897 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 06:49:57,181 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2019-09-10 06:49:57,425 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 06:49:57,607 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:49:58,298 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-10 06:49:58,561 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2019-09-10 06:49:58,897 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2019-09-10 06:49:59,124 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 06:49:59,320 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:49:59,864 WARN L188 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 06:50:00,121 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:50:00,784 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-10 06:50:01,923 WARN L188 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:50:02,187 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 06:50:03,423 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:50:04,793 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2019-09-10 06:50:04,989 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:50:05,420 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-10 06:50:05,937 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:50:06,159 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 06:50:06,664 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-10 06:50:06,840 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 06:50:07,025 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 06:50:07,602 WARN L188 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 06:50:08,303 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:50:08,592 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 06:50:08,730 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:50:08,877 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:50:09,050 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:50:09,322 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-10 06:50:09,529 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 06:50:10,051 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:50:10,229 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:50:10,477 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-10 06:50:10,764 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-10 06:50:11,178 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:50:11,358 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 06:50:11,538 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2019-09-10 06:50:11,768 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-10 06:50:11,961 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 06:50:12,111 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 06:50:12,302 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-10 06:50:12,537 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:50:12,767 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-10 06:50:12,954 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-09-10 06:50:13,192 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-10 06:50:13,397 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 06:50:13,792 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 06:50:14,063 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-10 06:50:14,287 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:50:14,549 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-10 06:50:14,796 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 06:50:15,056 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-10 06:50:15,600 WARN L188 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-10 06:50:16,017 WARN L188 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2019-09-10 06:50:16,209 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 06:50:16,487 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2019-09-10 06:50:16,919 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-10 06:50:17,113 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 06:50:17,264 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 06:50:17,527 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:50:17,769 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 06:50:17,974 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-10 06:50:18,258 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-10 06:50:18,545 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-10 06:50:18,719 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-09-10 06:50:19,180 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-10 06:50:19,381 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 06:50:19,678 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 06:50:19,928 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-10 06:50:20,111 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 06:50:20,394 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 06:50:20,699 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-09-10 06:50:21,025 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2019-09-10 06:50:21,353 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-10 06:50:21,544 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-10 06:50:21,794 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-10 06:50:22,018 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-10 06:50:22,412 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2019-09-10 06:50:22,835 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2019-09-10 06:50:23,030 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 06:50:23,284 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-10 06:50:23,516 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-10 06:50:23,713 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-10 06:50:23,970 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-10 06:50:24,215 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:50:24,362 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-10 06:50:24,598 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2019-09-10 06:50:25,106 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 06:50:25,476 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-10 06:50:25,868 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2019-09-10 06:50:26,150 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-10 06:50:26,388 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:50:26,679 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-10 06:50:27,277 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-10 06:50:27,541 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2019-09-10 06:50:27,841 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-10 06:50:28,059 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:50:28,379 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 06:50:28,635 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2019-09-10 06:50:28,795 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-09-10 06:50:29,144 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:50:29,503 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2019-09-10 06:50:29,777 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-10 06:50:30,001 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-10 06:50:30,248 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2019-09-10 06:50:30,455 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:50:31,894 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-10 06:50:32,203 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-10 06:50:32,432 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2019-09-10 06:50:32,621 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-10 06:50:32,826 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-10 06:50:33,131 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 06:50:33,372 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 06:50:33,798 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:50:34,326 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2019-09-10 06:50:34,618 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2019-09-10 06:50:34,982 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2019-09-10 06:50:35,245 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 06:50:35,491 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 06:50:35,839 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-10 06:50:36,536 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-10 06:50:36,880 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:50:37,066 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-10 06:50:37,426 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2019-09-10 06:50:37,688 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-10 06:50:37,852 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-09-10 06:50:38,129 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2019-09-10 06:50:38,433 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 06:50:38,618 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-10 06:50:38,958 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2019-09-10 06:50:39,509 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-10 06:50:39,733 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 06:50:39,932 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2019-09-10 06:50:40,251 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:50:40,487 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:50:40,688 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-10 06:50:40,941 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-09-10 06:50:41,190 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2019-09-10 06:50:41,608 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2019-09-10 06:50:41,940 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-09-10 06:50:42,344 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2019-09-10 06:50:42,577 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-10 06:50:42,787 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:50:42,968 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-10 06:50:43,487 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-09-10 06:50:46,125 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-10 06:50:46,492 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2019-09-10 06:50:46,769 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2019-09-10 06:50:48,771 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-10 06:50:48,981 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:50:50,016 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 06:50:50,879 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:50:51,218 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-10 06:50:51,423 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2019-09-10 06:50:52,626 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-09-10 06:50:52,891 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:50:54,029 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-10 06:50:54,400 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-10 06:50:54,567 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2019-09-10 06:50:56,073 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-09-10 06:50:56,265 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-10 06:50:56,452 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:50:56,610 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:50:56,775 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 06:50:56,948 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-09-10 06:50:57,830 WARN L188 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-10 06:50:59,298 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 06:50:59,628 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2019-09-10 06:51:00,188 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:51:00,409 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:51:00,602 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 06:51:00,914 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 06:51:01,498 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-10 06:51:01,724 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-10 06:51:01,880 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-10 06:51:02,744 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-10 06:51:03,086 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-10 06:51:03,313 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:51:04,114 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-10 06:51:04,398 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2019-09-10 06:51:04,736 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 06:51:04,952 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:51:06,737 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-10 06:51:07,136 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-10 06:51:07,303 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2019-09-10 06:51:07,517 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-10 06:51:07,768 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:51:08,084 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-10 06:51:08,273 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:51:08,457 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-10 06:51:08,625 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2019-09-10 06:51:08,800 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-09-10 06:51:08,960 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-10 06:51:09,163 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-10 06:51:09,366 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2019-09-10 06:51:09,759 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 06:51:10,101 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 06:51:10,738 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2019-09-10 06:51:10,952 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2019-09-10 06:51:11,161 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-09-10 06:51:12,398 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2019-09-10 06:51:12,674 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:51:12,933 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:51:13,381 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 06:51:13,524 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2019-09-10 06:51:13,820 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 06:51:14,267 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-09-10 06:51:14,445 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2019-09-10 06:51:14,599 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-09-10 06:51:14,843 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:51:15,065 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:51:15,328 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2019-09-10 06:51:15,577 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-10 06:51:15,849 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-10 06:51:16,063 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:51:16,275 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-10 06:51:16,819 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 06:51:17,055 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 06:51:17,792 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-10 06:51:17,956 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2019-09-10 06:51:18,173 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-10 06:51:18,434 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 06:51:18,781 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 06:51:19,059 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 06:51:19,734 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-10 06:51:19,982 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2019-09-10 06:51:20,229 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-09-10 06:51:20,691 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-10 06:51:20,934 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-10 06:51:21,088 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 06:51:21,335 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 06:51:21,558 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 06:51:22,075 WARN L188 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:51:22,545 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:51:22,813 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-10 06:51:23,037 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:51:23,813 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:51:24,178 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-10 06:51:24,438 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-10 06:51:24,613 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-10 06:51:24,796 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 06:51:25,512 WARN L188 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:51:25,868 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 06:51:26,174 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2019-09-10 06:51:26,579 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:51:26,944 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2019-09-10 06:51:27,144 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:51:27,307 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2019-09-10 06:51:27,535 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 06:51:27,860 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-09-10 06:51:28,042 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2019-09-10 06:51:28,222 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 06:51:28,427 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 06:51:28,602 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-10 06:51:28,994 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 06:51:29,373 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2019-09-10 06:51:29,768 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2019-09-10 06:51:29,995 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 06:51:30,182 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-09-10 06:51:30,488 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-09-10 06:51:30,741 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2019-09-10 06:51:31,103 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-09-10 06:51:31,339 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:51:31,582 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2019-09-10 06:51:31,864 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-10 06:51:32,155 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-10 06:51:32,356 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-09-10 06:51:32,582 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-10 06:51:32,866 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2019-09-10 06:51:33,264 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 06:51:33,457 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-10 06:51:34,041 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-09-10 06:51:34,341 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2019-09-10 06:51:34,637 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2019-09-10 06:51:34,874 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2019-09-10 06:51:35,542 WARN L188 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2019-09-10 06:51:35,870 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2019-09-10 06:51:36,128 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 06:51:36,429 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2019-09-10 06:51:37,117 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2019-09-10 06:51:37,297 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:51:37,511 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 06:51:37,700 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-10 06:51:38,044 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2019-09-10 06:51:38,268 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 06:51:38,517 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-09-10 06:51:38,760 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 06:51:39,012 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:51:39,233 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2019-09-10 06:51:41,566 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2019-09-10 06:51:41,872 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2019-09-10 06:51:42,213 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2019-09-10 06:51:42,507 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-09-10 06:51:43,181 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-10 06:51:43,676 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-09-10 06:51:44,040 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2019-09-10 06:51:44,616 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 06:51:45,045 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2019-09-10 06:51:45,442 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-10 06:51:45,628 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 06:51:46,079 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 06:51:46,794 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-09-10 06:51:47,234 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 06:51:47,445 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 06:51:48,918 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2019-09-10 06:51:49,818 WARN L188 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-10 06:51:50,164 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 06:51:52,063 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 06:51:52,635 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:51:52,833 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:51:53,340 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2019-09-10 06:51:53,624 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:51:53,967 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-10 06:51:54,730 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:51:55,036 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 06:51:55,226 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:51:55,557 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 06:51:56,500 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-10 06:51:56,728 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-10 06:51:56,920 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2019-09-10 06:51:57,180 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2019-09-10 06:51:58,811 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-10 06:51:59,088 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 06:51:59,372 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 06:51:59,608 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 06:51:59,806 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2019-09-10 06:52:00,055 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 06:52:00,285 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2019-09-10 06:52:00,519 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-10 06:52:00,806 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 06:52:01,385 WARN L188 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 06:52:01,590 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 06:52:02,583 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:52:02,843 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-10 06:52:03,082 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-10 06:52:03,471 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-10 06:52:03,674 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2019-09-10 06:52:04,479 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2019-09-10 06:52:04,693 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-10 06:52:04,922 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-10 06:52:05,119 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:52:05,295 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2019-09-10 06:52:05,473 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:52:05,706 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-10 06:52:06,442 WARN L188 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-09-10 06:52:06,655 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2019-09-10 06:52:07,492 WARN L188 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:52:07,818 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:52:08,043 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:52:08,387 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 06:52:08,566 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 06:52:08,791 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 06:52:09,202 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-10 06:52:09,424 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2019-09-10 06:52:09,676 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-10 06:52:10,184 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-10 06:52:10,406 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-10 06:52:10,654 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 06:52:10,879 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:52:11,138 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-10 06:52:11,510 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-10 06:52:11,757 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2019-09-10 06:52:12,118 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-10 06:52:12,305 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 06:52:13,437 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-10 06:52:13,781 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-10 06:52:14,025 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:52:14,220 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 06:52:14,539 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 06:52:15,321 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2019-09-10 06:52:15,710 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:52:15,970 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2019-09-10 06:52:16,154 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 06:52:16,323 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-10 06:52:16,503 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-10 06:52:16,655 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-10 06:52:17,005 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-10 06:52:17,268 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-10 06:52:17,450 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-10 06:52:18,373 WARN L188 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 06:52:18,531 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2019-09-10 06:52:18,927 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-10 06:52:19,206 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-10 06:52:19,393 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-10 06:52:19,640 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-10 06:52:19,972 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2019-09-10 06:52:20,120 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-10 06:52:20,285 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:52:20,434 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:52:20,923 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-10 06:52:21,122 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-10 06:52:21,334 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 06:52:21,496 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:52:21,732 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-09-10 06:52:21,936 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-10 06:52:22,249 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:52:22,491 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:52:22,686 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-09-10 06:52:22,884 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:52:23,109 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-10 06:52:23,376 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 06:52:23,569 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-10 06:52:23,896 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 06:52:24,110 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 06:52:24,263 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-10 06:52:24,995 WARN L188 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-09-10 06:52:25,188 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-10 06:52:25,495 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-09-10 06:52:25,962 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-10 06:52:26,135 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 06:52:26,377 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2019-09-10 06:52:26,613 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 06:52:26,888 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:52:27,091 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-10 06:52:27,492 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-10 06:52:27,823 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2019-09-10 06:52:28,098 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-10 06:52:28,453 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2019-09-10 06:52:29,576 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 06:52:29,838 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 06:52:30,059 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 06:52:30,281 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2019-09-10 06:52:31,101 WARN L188 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:52:31,285 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 06:52:31,562 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-09-10 06:52:31,748 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-10 06:52:31,971 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2019-09-10 06:52:32,324 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 06:52:32,494 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:52:32,707 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:52:32,965 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2019-09-10 06:52:33,330 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-09-10 06:52:33,613 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 06:52:34,162 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-09-10 06:52:34,637 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-10 06:52:34,857 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-09-10 06:52:35,373 WARN L188 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 06:52:35,592 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2019-09-10 06:52:35,834 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 06:52:36,072 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 06:52:36,348 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-10 06:52:37,058 WARN L188 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 06:52:37,292 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-09-10 06:52:37,573 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 06:52:37,842 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-10 06:52:38,041 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:52:39,131 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:52:39,656 WARN L188 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-10 06:52:39,919 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2019-09-10 06:52:40,148 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 06:52:40,408 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 06:52:40,648 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-10 06:52:40,910 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-09-10 06:52:41,388 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-10 06:52:41,691 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-09-10 06:52:42,311 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2019-09-10 06:52:43,072 WARN L188 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 06:52:43,263 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 06:52:43,567 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-10 06:52:43,762 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 06:52:44,601 WARN L188 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 06:52:44,899 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-10 06:52:45,091 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2019-09-10 06:52:45,370 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 06:52:45,965 WARN L188 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-10 06:52:46,531 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-10 06:52:46,989 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-10 06:52:47,732 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:52:48,154 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-10 06:52:49,769 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2019-09-10 06:52:50,130 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-09-10 06:52:50,569 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-10 06:52:50,755 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 06:52:50,973 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:52:51,345 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 06:52:51,745 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2019-09-10 06:52:52,401 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 06:52:52,750 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2019-09-10 06:52:53,207 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-10 06:52:56,064 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2019-09-10 06:52:57,185 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-10 06:52:57,489 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-10 06:52:58,336 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-10 06:52:58,516 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 06:52:58,738 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-10 06:52:59,102 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-10 06:52:59,508 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-10 06:52:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:52:59,653 INFO L93 Difference]: Finished difference Result 789146 states and 1024010 transitions. [2019-09-10 06:52:59,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 749 states. [2019-09-10 06:52:59,654 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 75 [2019-09-10 06:52:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:53:00,733 INFO L225 Difference]: With dead ends: 789146 [2019-09-10 06:53:00,734 INFO L226 Difference]: Without dead ends: 789146 [2019-09-10 06:53:00,750 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 774 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281479 ImplicationChecksByTransitivity, 158.4s TimeCoverageRelationStatistics Valid=54051, Invalid=547349, Unknown=0, NotChecked=0, Total=601400 [2019-09-10 06:53:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789146 states. [2019-09-10 06:53:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789146 to 247770. [2019-09-10 06:53:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247770 states. [2019-09-10 06:53:12,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247770 states to 247770 states and 326467 transitions. [2019-09-10 06:53:12,500 INFO L78 Accepts]: Start accepts. Automaton has 247770 states and 326467 transitions. Word has length 75 [2019-09-10 06:53:12,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:53:12,501 INFO L475 AbstractCegarLoop]: Abstraction has 247770 states and 326467 transitions. [2019-09-10 06:53:12,501 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 06:53:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 247770 states and 326467 transitions. [2019-09-10 06:53:12,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 06:53:12,520 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:53:12,521 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:53:12,521 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:53:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:53:12,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1745550565, now seen corresponding path program 1 times [2019-09-10 06:53:12,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:53:12,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:12,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:53:12,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:12,523 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:53:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:53:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 06:53:12,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:53:12,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:53:12,570 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:53:12,571 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:53:12,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:53:12,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:53:12,571 INFO L87 Difference]: Start difference. First operand 247770 states and 326467 transitions. Second operand 3 states. [2019-09-10 06:53:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:53:14,142 INFO L93 Difference]: Finished difference Result 203553 states and 265121 transitions. [2019-09-10 06:53:14,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:53:14,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2019-09-10 06:53:14,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:53:14,382 INFO L225 Difference]: With dead ends: 203553 [2019-09-10 06:53:14,382 INFO L226 Difference]: Without dead ends: 203553 [2019-09-10 06:53:14,382 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 06:53:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203553 states. [2019-09-10 06:53:16,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203553 to 201576. [2019-09-10 06:53:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201576 states. [2019-09-10 06:53:17,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201576 states to 201576 states and 262524 transitions. [2019-09-10 06:53:17,073 INFO L78 Accepts]: Start accepts. Automaton has 201576 states and 262524 transitions. Word has length 98 [2019-09-10 06:53:17,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:53:17,073 INFO L475 AbstractCegarLoop]: Abstraction has 201576 states and 262524 transitions. [2019-09-10 06:53:17,073 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:53:17,074 INFO L276 IsEmpty]: Start isEmpty. Operand 201576 states and 262524 transitions. [2019-09-10 06:53:17,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 06:53:17,095 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:53:17,095 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:53:17,095 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:53:17,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:53:17,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1242482949, now seen corresponding path program 1 times [2019-09-10 06:53:17,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:53:17,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:17,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:53:17,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:17,096 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:53:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:53:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-10 06:53:17,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:53:17,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:53:17,149 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:53:17,150 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:53:17,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:53:17,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:53:17,150 INFO L87 Difference]: Start difference. First operand 201576 states and 262524 transitions. Second operand 3 states. [2019-09-10 06:53:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:53:17,490 INFO L93 Difference]: Finished difference Result 126766 states and 163072 transitions. [2019-09-10 06:53:17,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:53:17,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-09-10 06:53:17,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:53:17,660 INFO L225 Difference]: With dead ends: 126766 [2019-09-10 06:53:17,660 INFO L226 Difference]: Without dead ends: 126766 [2019-09-10 06:53:17,661 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 06:53:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126766 states. [2019-09-10 06:53:19,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126766 to 107978. [2019-09-10 06:53:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107978 states. [2019-09-10 06:53:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107978 states to 107978 states and 138880 transitions. [2019-09-10 06:53:19,814 INFO L78 Accepts]: Start accepts. Automaton has 107978 states and 138880 transitions. Word has length 103 [2019-09-10 06:53:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:53:19,814 INFO L475 AbstractCegarLoop]: Abstraction has 107978 states and 138880 transitions. [2019-09-10 06:53:19,814 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:53:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 107978 states and 138880 transitions. [2019-09-10 06:53:19,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 06:53:19,826 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:53:19,826 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2019-09-10 06:53:19,826 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:53:19,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:53:19,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1314552553, now seen corresponding path program 2 times [2019-09-10 06:53:19,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:53:19,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:19,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:53:19,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:19,828 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:53:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:53:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-10 06:53:19,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:53:19,926 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:53:19,926 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 06:53:19,926 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 06:53:19,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:53:19,926 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) [2019-09-10 06:53:19,941 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 06:53:19,941 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:53:20,024 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-10 06:53:20,024 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 06:53:20,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 06:53:20,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:53:20,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:53:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 24 proven. 41 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-10 06:53:20,344 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:53:20,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:53:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 24 proven. 41 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-10 06:53:20,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:53:20,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 21 [2019-09-10 06:53:20,630 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:53:20,632 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-10 06:53:20,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-10 06:53:20,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2019-09-10 06:53:20,632 INFO L87 Difference]: Start difference. First operand 107978 states and 138880 transitions. Second operand 13 states. [2019-09-10 06:53:22,129 WARN L188 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-09-10 06:53:27,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:53:27,453 INFO L93 Difference]: Finished difference Result 348297 states and 441719 transitions. [2019-09-10 06:53:27,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-09-10 06:53:27,453 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 104 [2019-09-10 06:53:27,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:53:29,097 INFO L225 Difference]: With dead ends: 348297 [2019-09-10 06:53:29,097 INFO L226 Difference]: Without dead ends: 348297 [2019-09-10 06:53:29,097 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2643 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1946, Invalid=6064, Unknown=0, NotChecked=0, Total=8010 [2019-09-10 06:53:29,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348297 states. [2019-09-10 06:53:37,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348297 to 237363. [2019-09-10 06:53:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237363 states. [2019-09-10 06:53:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237363 states to 237363 states and 303715 transitions. [2019-09-10 06:53:37,840 INFO L78 Accepts]: Start accepts. Automaton has 237363 states and 303715 transitions. Word has length 104 [2019-09-10 06:53:37,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:53:37,840 INFO L475 AbstractCegarLoop]: Abstraction has 237363 states and 303715 transitions. [2019-09-10 06:53:37,840 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-10 06:53:37,840 INFO L276 IsEmpty]: Start isEmpty. Operand 237363 states and 303715 transitions. [2019-09-10 06:53:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-10 06:53:37,869 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:53:37,869 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:53:37,869 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:53:37,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:53:37,869 INFO L82 PathProgramCache]: Analyzing trace with hash -113151086, now seen corresponding path program 1 times [2019-09-10 06:53:37,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:53:37,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:37,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 06:53:37,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:37,871 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:53:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:53:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 06:53:37,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:53:37,924 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:53:37,925 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 116 with the following transitions: [2019-09-10 06:53:37,925 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [86], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [155], [163], [182], [184], [187], [195], [198], [201], [204], [206], [208], [237], [240], [246], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:53:37,927 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:53:37,927 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:53:37,935 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:53:38,124 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:53:38,124 INFO L272 AbstractInterpreter]: Visited 65 different actions 604 times. Merged at 40 different actions 453 times. Widened at 16 different actions 87 times. Performed 1859 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1859 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 63 fixpoints after 16 different actions. Largest state had 98 variables. [2019-09-10 06:53:38,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:53:38,124 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:53:38,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:53:38,125 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 06:53:38,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:53:38,143 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 06:53:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:53:38,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 06:53:38,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:53:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 43 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 06:53:38,317 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:53:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 43 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 06:53:38,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:53:38,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2019-09-10 06:53:38,408 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:53:38,408 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 06:53:38,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 06:53:38,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-09-10 06:53:38,409 INFO L87 Difference]: Start difference. First operand 237363 states and 303715 transitions. Second operand 10 states. [2019-09-10 06:53:39,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:53:39,357 INFO L93 Difference]: Finished difference Result 307275 states and 383396 transitions. [2019-09-10 06:53:39,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-10 06:53:39,358 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2019-09-10 06:53:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:53:40,342 INFO L225 Difference]: With dead ends: 307275 [2019-09-10 06:53:40,342 INFO L226 Difference]: Without dead ends: 307275 [2019-09-10 06:53:40,343 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2019-09-10 06:53:40,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307275 states. [2019-09-10 06:53:42,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307275 to 216896. [2019-09-10 06:53:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216896 states. [2019-09-10 06:53:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216896 states to 216896 states and 272126 transitions. [2019-09-10 06:53:42,876 INFO L78 Accepts]: Start accepts. Automaton has 216896 states and 272126 transitions. Word has length 115 [2019-09-10 06:53:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:53:42,876 INFO L475 AbstractCegarLoop]: Abstraction has 216896 states and 272126 transitions. [2019-09-10 06:53:42,876 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 06:53:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 216896 states and 272126 transitions. [2019-09-10 06:53:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-10 06:53:42,907 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:53:42,907 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:53:42,907 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:53:42,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:53:42,908 INFO L82 PathProgramCache]: Analyzing trace with hash -2120472056, now seen corresponding path program 1 times [2019-09-10 06:53:42,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:53:42,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:42,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:53:42,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:42,909 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:53:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:53:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-10 06:53:42,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:53:42,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 06:53:42,966 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:53:42,967 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 06:53:42,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 06:53:42,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 06:53:42,968 INFO L87 Difference]: Start difference. First operand 216896 states and 272126 transitions. Second operand 4 states. [2019-09-10 06:53:44,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:53:44,145 INFO L93 Difference]: Finished difference Result 217772 states and 269910 transitions. [2019-09-10 06:53:44,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:53:44,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-09-10 06:53:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:53:44,378 INFO L225 Difference]: With dead ends: 217772 [2019-09-10 06:53:44,378 INFO L226 Difference]: Without dead ends: 217772 [2019-09-10 06:53:44,378 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:53:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217772 states. [2019-09-10 06:53:46,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217772 to 148188. [2019-09-10 06:53:46,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148188 states. [2019-09-10 06:53:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148188 states to 148188 states and 183927 transitions. [2019-09-10 06:53:46,805 INFO L78 Accepts]: Start accepts. Automaton has 148188 states and 183927 transitions. Word has length 117 [2019-09-10 06:53:46,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:53:46,805 INFO L475 AbstractCegarLoop]: Abstraction has 148188 states and 183927 transitions. [2019-09-10 06:53:46,805 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 06:53:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 148188 states and 183927 transitions. [2019-09-10 06:53:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-10 06:53:46,822 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:53:46,823 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:53:46,823 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:53:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:53:46,823 INFO L82 PathProgramCache]: Analyzing trace with hash -269827773, now seen corresponding path program 1 times [2019-09-10 06:53:46,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:53:46,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:46,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:53:46,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:46,824 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:53:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:53:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-10 06:53:46,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:53:46,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:53:46,876 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:53:46,876 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:53:46,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:53:46,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:53:46,876 INFO L87 Difference]: Start difference. First operand 148188 states and 183927 transitions. Second operand 3 states. [2019-09-10 06:53:47,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:53:47,903 INFO L93 Difference]: Finished difference Result 226325 states and 280297 transitions. [2019-09-10 06:53:47,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:53:47,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-09-10 06:53:47,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:53:48,137 INFO L225 Difference]: With dead ends: 226325 [2019-09-10 06:53:48,138 INFO L226 Difference]: Without dead ends: 226325 [2019-09-10 06:53:48,138 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 06:53:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226325 states. [2019-09-10 06:53:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226325 to 217568. [2019-09-10 06:53:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217568 states. [2019-09-10 06:53:52,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217568 states to 217568 states and 269983 transitions. [2019-09-10 06:53:52,661 INFO L78 Accepts]: Start accepts. Automaton has 217568 states and 269983 transitions. Word has length 117 [2019-09-10 06:53:52,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:53:52,662 INFO L475 AbstractCegarLoop]: Abstraction has 217568 states and 269983 transitions. [2019-09-10 06:53:52,662 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:53:52,662 INFO L276 IsEmpty]: Start isEmpty. Operand 217568 states and 269983 transitions. [2019-09-10 06:53:52,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-10 06:53:52,682 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:53:52,683 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2019-09-10 06:53:52,683 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:53:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:53:52,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1666783704, now seen corresponding path program 1 times [2019-09-10 06:53:52,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:53:52,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:52,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:53:52,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:53:52,684 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:53:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:53:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-10 06:53:52,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:53:52,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:53:52,731 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:53:52,731 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:53:52,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:53:52,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:53:52,732 INFO L87 Difference]: Start difference. First operand 217568 states and 269983 transitions. Second operand 3 states. [2019-09-10 06:53:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:53:53,860 INFO L93 Difference]: Finished difference Result 248927 states and 308008 transitions. [2019-09-10 06:53:53,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:53:53,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-09-10 06:53:53,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:53:54,112 INFO L225 Difference]: With dead ends: 248927 [2019-09-10 06:53:54,113 INFO L226 Difference]: Without dead ends: 248927 [2019-09-10 06:53:54,113 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 06:53:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248927 states. [2019-09-10 06:53:59,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248927 to 235968. [2019-09-10 06:53:59,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235968 states. [2019-09-10 06:54:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235968 states to 235968 states and 292020 transitions. [2019-09-10 06:54:00,068 INFO L78 Accepts]: Start accepts. Automaton has 235968 states and 292020 transitions. Word has length 117 [2019-09-10 06:54:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:54:00,068 INFO L475 AbstractCegarLoop]: Abstraction has 235968 states and 292020 transitions. [2019-09-10 06:54:00,068 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:54:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 235968 states and 292020 transitions. [2019-09-10 06:54:00,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-10 06:54:00,091 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:54:00,091 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2019-09-10 06:54:00,091 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:54:00,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:54:00,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1196456714, now seen corresponding path program 2 times [2019-09-10 06:54:00,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:54:00,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:54:00,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:54:00,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:54:00,093 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:54:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:54:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-10 06:54:00,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:54:00,335 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:54:00,336 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 06:54:00,336 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 06:54:00,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:54:00,336 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) [2019-09-10 06:54:00,350 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 06:54:00,350 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:54:00,432 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-10 06:54:00,432 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 06:54:00,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-10 06:54:00,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:54:00,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-10 06:54:00,727 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:54:00,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-10 06:54:00,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:54:00,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2019-09-10 06:54:00,971 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:54:00,971 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-10 06:54:00,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-10 06:54:00,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2019-09-10 06:54:00,972 INFO L87 Difference]: Start difference. First operand 235968 states and 292020 transitions. Second operand 18 states. [2019-09-10 06:54:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:54:07,477 INFO L93 Difference]: Finished difference Result 492844 states and 607446 transitions. [2019-09-10 06:54:07,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-10 06:54:07,478 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 117 [2019-09-10 06:54:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:54:08,101 INFO L225 Difference]: With dead ends: 492844 [2019-09-10 06:54:08,101 INFO L226 Difference]: Without dead ends: 492844 [2019-09-10 06:54:08,102 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=517, Invalid=1375, Unknown=0, NotChecked=0, Total=1892 [2019-09-10 06:54:08,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492844 states. [2019-09-10 06:54:11,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492844 to 260199. [2019-09-10 06:54:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260199 states. [2019-09-10 06:54:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260199 states to 260199 states and 321949 transitions. [2019-09-10 06:54:11,750 INFO L78 Accepts]: Start accepts. Automaton has 260199 states and 321949 transitions. Word has length 117 [2019-09-10 06:54:11,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:54:11,751 INFO L475 AbstractCegarLoop]: Abstraction has 260199 states and 321949 transitions. [2019-09-10 06:54:11,751 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-10 06:54:11,751 INFO L276 IsEmpty]: Start isEmpty. Operand 260199 states and 321949 transitions. [2019-09-10 06:54:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-10 06:54:11,772 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:54:11,773 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:11,773 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:54:11,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:54:11,773 INFO L82 PathProgramCache]: Analyzing trace with hash -329601753, now seen corresponding path program 1 times [2019-09-10 06:54:11,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:54:11,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:54:11,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 06:54:11,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:54:11,775 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:54:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:54:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-09-10 06:54:12,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:54:12,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:54:12,468 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:54:12,468 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:54:12,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:54:12,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:54:12,470 INFO L87 Difference]: Start difference. First operand 260199 states and 321949 transitions. Second operand 3 states. [2019-09-10 06:54:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:54:12,981 INFO L93 Difference]: Finished difference Result 241949 states and 299204 transitions. [2019-09-10 06:54:12,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:54:12,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-09-10 06:54:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:54:13,236 INFO L225 Difference]: With dead ends: 241949 [2019-09-10 06:54:13,237 INFO L226 Difference]: Without dead ends: 241949 [2019-09-10 06:54:13,237 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 06:54:13,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241949 states. [2019-09-10 06:54:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241949 to 217731. [2019-09-10 06:54:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217731 states. [2019-09-10 06:54:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217731 states to 217731 states and 269498 transitions. [2019-09-10 06:54:19,289 INFO L78 Accepts]: Start accepts. Automaton has 217731 states and 269498 transitions. Word has length 118 [2019-09-10 06:54:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:54:19,289 INFO L475 AbstractCegarLoop]: Abstraction has 217731 states and 269498 transitions. [2019-09-10 06:54:19,289 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:54:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 217731 states and 269498 transitions. [2019-09-10 06:54:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-10 06:54:19,301 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:54:19,301 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2019-09-10 06:54:19,301 INFO L418 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:54:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:54:19,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1819043519, now seen corresponding path program 1 times [2019-09-10 06:54:19,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:54:19,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:54:19,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:54:19,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:54:19,303 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:54:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:54:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:54:19,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:54:19,619 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:54:19,619 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 119 with the following transitions: [2019-09-10 06:54:19,620 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [70], [72], [74], [77], [80], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [140], [142], [145], [148], [151], [153], [155], [191], [193], [195], [208], [216], [219], [222], [225], [227], [235], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:54:19,621 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:54:19,621 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:54:19,633 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:54:19,964 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:54:19,964 INFO L272 AbstractInterpreter]: Visited 74 different actions 864 times. Merged at 50 different actions 650 times. Widened at 20 different actions 124 times. Performed 2626 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2626 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 123 fixpoints after 22 different actions. Largest state had 99 variables. [2019-09-10 06:54:19,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:54:19,964 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:54:19,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:54:19,964 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) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:54:19,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:54:19,975 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:54:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:54:20,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 06:54:20,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:54:20,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,218 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,468 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 54 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:54:20,468 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:54:20,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:54:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:54:20,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:54:20,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2019-09-10 06:54:20,955 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:54:20,956 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-10 06:54:20,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-10 06:54:20,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2019-09-10 06:54:20,956 INFO L87 Difference]: Start difference. First operand 217731 states and 269498 transitions. Second operand 22 states. [2019-09-10 06:54:22,953 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2019-09-10 06:54:26,368 WARN L188 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2019-09-10 06:54:27,723 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2019-09-10 06:54:28,042 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2019-09-10 06:54:28,524 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2019-09-10 06:54:28,737 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2019-09-10 06:54:29,098 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2019-09-10 06:54:29,546 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2019-09-10 06:54:31,461 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2019-09-10 06:54:31,803 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 39 [2019-09-10 06:54:32,147 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 45 [2019-09-10 06:54:32,547 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2019-09-10 06:54:33,397 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2019-09-10 06:54:33,633 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2019-09-10 06:54:33,856 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2019-09-10 06:54:34,233 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 45 [2019-09-10 06:54:34,413 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2019-09-10 06:54:35,388 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2019-09-10 06:54:35,569 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2019-09-10 06:54:36,838 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2019-09-10 06:54:37,005 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 06:54:37,348 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2019-09-10 06:54:37,701 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 50 [2019-09-10 06:54:38,396 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 06:54:38,693 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2019-09-10 06:54:38,901 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2019-09-10 06:54:39,098 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 45 [2019-09-10 06:54:39,564 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 48 [2019-09-10 06:54:40,495 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2019-09-10 06:54:40,654 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2019-09-10 06:54:41,310 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 06:54:41,852 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2019-09-10 06:54:42,772 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 06:54:43,348 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2019-09-10 06:54:43,515 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 39 [2019-09-10 06:54:44,873 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-10 06:54:45,776 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2019-09-10 06:54:46,137 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-10 06:54:46,872 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2019-09-10 06:54:47,217 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 45 [2019-09-10 06:54:47,835 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2019-09-10 06:54:48,048 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2019-09-10 06:54:48,351 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 06:54:49,555 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2019-09-10 06:54:50,963 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2019-09-10 06:54:51,171 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2019-09-10 06:54:52,255 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2019-09-10 06:54:52,503 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 50 [2019-09-10 06:54:53,022 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-09-10 06:54:53,470 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2019-09-10 06:54:53,695 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2019-09-10 06:54:54,058 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2019-09-10 06:54:54,251 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2019-09-10 06:54:54,718 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2019-09-10 06:54:55,503 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2019-09-10 06:54:55,697 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2019-09-10 06:54:56,429 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-09-10 06:54:57,382 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2019-09-10 06:54:57,555 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2019-09-10 06:54:58,388 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2019-09-10 06:54:58,587 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2019-09-10 06:54:59,385 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2019-09-10 06:55:00,243 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2019-09-10 06:55:00,410 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-09-10 06:55:00,595 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2019-09-10 06:55:02,102 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2019-09-10 06:55:02,680 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2019-09-10 06:55:03,354 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2019-09-10 06:55:06,383 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-09-10 06:55:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:55:08,947 INFO L93 Difference]: Finished difference Result 462756 states and 558613 transitions. [2019-09-10 06:55:08,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2019-09-10 06:55:08,948 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2019-09-10 06:55:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:55:09,533 INFO L225 Difference]: With dead ends: 462756 [2019-09-10 06:55:09,533 INFO L226 Difference]: Without dead ends: 462756 [2019-09-10 06:55:09,536 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36952 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=12987, Invalid=79733, Unknown=0, NotChecked=0, Total=92720 [2019-09-10 06:55:09,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462756 states. [2019-09-10 06:55:12,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462756 to 187451. [2019-09-10 06:55:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187451 states. [2019-09-10 06:55:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187451 states to 187451 states and 231074 transitions. [2019-09-10 06:55:13,508 INFO L78 Accepts]: Start accepts. Automaton has 187451 states and 231074 transitions. Word has length 118 [2019-09-10 06:55:13,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:55:13,508 INFO L475 AbstractCegarLoop]: Abstraction has 187451 states and 231074 transitions. [2019-09-10 06:55:13,508 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-10 06:55:13,508 INFO L276 IsEmpty]: Start isEmpty. Operand 187451 states and 231074 transitions. [2019-09-10 06:55:13,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-10 06:55:13,520 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:55:13,520 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:13,520 INFO L418 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:55:13,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:55:13,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1073975633, now seen corresponding path program 1 times [2019-09-10 06:55:13,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:55:13,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:55:13,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:55:13,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:55:13,522 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:55:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:55:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 06:55:13,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:55:13,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 06:55:13,576 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:55:13,576 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 06:55:13,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 06:55:13,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 06:55:13,577 INFO L87 Difference]: Start difference. First operand 187451 states and 231074 transitions. Second operand 4 states. [2019-09-10 06:55:14,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:55:14,278 INFO L93 Difference]: Finished difference Result 193753 states and 236009 transitions. [2019-09-10 06:55:14,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:55:14,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-09-10 06:55:14,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:55:14,523 INFO L225 Difference]: With dead ends: 193753 [2019-09-10 06:55:14,523 INFO L226 Difference]: Without dead ends: 193753 [2019-09-10 06:55:14,524 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:55:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193753 states. [2019-09-10 06:55:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193753 to 136154. [2019-09-10 06:55:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136154 states. [2019-09-10 06:55:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136154 states to 136154 states and 166608 transitions. [2019-09-10 06:55:16,668 INFO L78 Accepts]: Start accepts. Automaton has 136154 states and 166608 transitions. Word has length 119 [2019-09-10 06:55:16,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:55:16,668 INFO L475 AbstractCegarLoop]: Abstraction has 136154 states and 166608 transitions. [2019-09-10 06:55:16,668 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 06:55:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 136154 states and 166608 transitions. [2019-09-10 06:55:16,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-10 06:55:16,679 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:55:16,679 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:16,679 INFO L418 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:55:16,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:55:16,680 INFO L82 PathProgramCache]: Analyzing trace with hash 647355242, now seen corresponding path program 1 times [2019-09-10 06:55:16,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:55:16,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:55:16,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:55:16,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:55:16,681 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:55:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:55:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:55:17,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:55:17,946 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:55:17,946 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 120 with the following transitions: [2019-09-10 06:55:17,946 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [86], [88], [90], [93], [96], [104], [106], [109], [112], [114], [117], [118], [120], [129], [138], [142], [155], [163], [166], [169], [172], [174], [182], [184], [187], [195], [198], [201], [204], [206], [208], [237], [240], [246], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:55:17,947 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:55:17,948 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:55:17,954 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:55:18,324 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:55:18,325 INFO L272 AbstractInterpreter]: Visited 73 different actions 909 times. Merged at 49 different actions 706 times. Widened at 19 different actions 150 times. Performed 2768 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2768 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 114 fixpoints after 22 different actions. Largest state had 99 variables. [2019-09-10 06:55:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:55:18,325 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:55:18,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:55:18,326 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) [2019-09-10 06:55:18,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:55:18,341 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:55:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:55:18,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 06:55:18,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:55:18,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:18,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:18,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:18,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 31 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:55:19,082 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:55:20,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:20,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:20,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:20,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:20,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:20,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:20,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:20,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:55:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 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 06:55:20,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:55:20,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 12] total 43 [2019-09-10 06:55:20,854 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:55:20,854 INFO L454 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-09-10 06:55:20,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-09-10 06:55:20,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1679, Unknown=0, NotChecked=0, Total=1806 [2019-09-10 06:55:20,855 INFO L87 Difference]: Start difference. First operand 136154 states and 166608 transitions. Second operand 33 states. [2019-09-10 06:55:21,094 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2019-09-10 06:55:22,191 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2019-09-10 06:55:23,965 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2019-09-10 06:55:24,326 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-10 06:55:24,954 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2019-09-10 06:55:25,327 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-10 06:55:25,563 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2019-09-10 06:55:25,911 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-10 06:55:26,137 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2019-09-10 06:55:26,381 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-10 06:55:26,720 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 80 [2019-09-10 06:55:27,190 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:55:28,257 WARN L188 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2019-09-10 06:55:28,789 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 06:55:29,256 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 06:55:29,526 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:55:29,994 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:55:30,646 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 06:55:31,259 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-10 06:55:32,120 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-10 06:55:33,159 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-10 06:55:33,747 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 06:55:33,992 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2019-09-10 06:55:34,365 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-10 06:55:35,802 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-10 06:55:36,713 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-10 06:55:36,886 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-10 06:55:37,158 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 06:55:37,599 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 06:55:39,194 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 06:55:39,791 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-09-10 06:55:40,063 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-10 06:55:40,267 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-10 06:55:41,098 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:55:41,329 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-10 06:55:41,869 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 06:55:42,162 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 06:55:42,372 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-10 06:55:42,807 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-10 06:55:43,021 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 06:55:43,205 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 06:55:43,637 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:55:44,935 WARN L188 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 06:55:45,347 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-10 06:55:46,049 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 06:55:46,282 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-09-10 06:55:46,490 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-10 06:55:46,784 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2019-09-10 06:55:47,289 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-10 06:55:48,611 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 06:55:49,219 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-10 06:55:49,417 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-10 06:55:50,297 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-10 06:55:50,511 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-10 06:55:51,786 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-10 06:55:52,236 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 06:55:52,711 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 06:55:53,085 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-10 06:55:53,297 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 06:55:53,703 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-10 06:55:53,964 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-09-10 06:55:54,285 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 06:55:54,516 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 06:55:54,716 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-10 06:55:54,904 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 06:55:55,084 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-10 06:55:55,275 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 06:55:55,613 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-09-10 06:55:56,103 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-10 06:55:56,390 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-10 06:55:56,544 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-10 06:55:56,719 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 06:55:57,165 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 06:55:57,534 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-09-10 06:55:58,120 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-10 06:55:58,433 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2019-09-10 06:55:58,812 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-10 06:55:58,987 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 06:55:59,367 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-10 06:55:59,630 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2019-09-10 06:55:59,877 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 06:56:01,735 WARN L188 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2019-09-10 06:56:02,060 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:56:02,305 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-10 06:56:02,498 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 06:56:02,770 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2019-09-10 06:56:03,142 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-10 06:56:03,639 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 06:56:03,869 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-10 06:56:04,033 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-10 06:56:04,303 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2019-09-10 06:56:04,629 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-10 06:56:05,756 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 06:56:05,968 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 06:56:06,235 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 06:56:06,497 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-10 06:56:06,712 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 06:56:07,212 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 06:56:07,948 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-10 06:56:08,254 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-09-10 06:56:08,645 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-10 06:56:08,891 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-09-10 06:56:09,307 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:56:09,514 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-10 06:56:09,807 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-10 06:56:10,087 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 06:56:10,383 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 06:56:10,851 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-10 06:56:11,912 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 06:56:12,413 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:56:12,585 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:56:12,972 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 06:56:13,202 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-10 06:56:13,469 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2019-09-10 06:56:13,835 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2019-09-10 06:56:14,087 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-09-10 06:56:15,284 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-10 06:56:15,539 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-10 06:56:15,773 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-10 06:56:15,949 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 06:56:16,411 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 06:56:16,612 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-10 06:56:16,793 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-10 06:56:17,191 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:56:17,478 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 06:56:17,681 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 06:56:18,029 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-09-10 06:56:19,242 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2019-09-10 06:56:19,663 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-10 06:56:19,830 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:56:20,816 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 06:56:21,093 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-10 06:56:21,414 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 06:56:21,786 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-10 06:56:22,059 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-10 06:56:22,283 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-10 06:56:22,536 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-10 06:56:22,733 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-10 06:56:23,228 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-10 06:56:23,511 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-10 06:56:23,792 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 06:56:24,131 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-10 06:56:24,331 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-10 06:56:24,509 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 06:56:24,778 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 06:56:24,947 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-10 06:56:25,185 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-10 06:56:25,952 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:56:26,676 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 06:56:27,316 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 06:56:27,794 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-10 06:56:28,232 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:56:28,474 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-10 06:56:28,679 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 06:56:28,841 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:56:29,103 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-10 06:56:29,603 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-10 06:56:30,179 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:56:30,467 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-10 06:56:30,818 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-10 06:56:31,057 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-10 06:56:31,517 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 06:56:31,752 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 06:56:31,931 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-10 06:56:32,162 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-10 06:56:33,175 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-10 06:56:33,408 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:56:33,844 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-10 06:56:34,083 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-10 06:56:34,512 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 06:56:34,710 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-10 06:56:35,371 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 06:56:35,581 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:56:35,836 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-09-10 06:56:36,148 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-10 06:56:36,715 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 06:56:36,918 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2019-09-10 06:56:37,274 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 06:56:37,478 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2019-09-10 06:56:37,682 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:56:37,984 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 06:56:38,261 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-10 06:56:38,839 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-10 06:56:39,288 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 06:56:39,505 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2019-09-10 06:56:39,950 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 06:56:40,208 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:56:40,627 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 06:56:40,830 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 06:56:41,069 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-10 06:56:41,324 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-10 06:56:41,933 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 06:56:42,442 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 06:56:42,886 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2019-09-10 06:56:43,077 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-10 06:56:43,289 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 06:56:43,526 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-10 06:56:43,705 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-10 06:56:43,950 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2019-09-10 06:56:44,308 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 06:56:44,693 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 06:56:45,015 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 06:56:45,203 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-10 06:56:45,398 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 06:56:45,599 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-09-10 06:56:45,800 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:56:46,355 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 06:56:46,551 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-10 06:56:46,781 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-10 06:56:47,112 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 06:56:47,336 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2019-09-10 06:56:47,649 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 06:56:47,848 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 06:56:48,219 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:56:48,880 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:56:49,179 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 06:56:49,755 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 06:56:49,939 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:56:50,149 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:56:50,344 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 06:56:50,628 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2019-09-10 06:56:50,824 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-10 06:56:51,013 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:56:51,346 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2019-09-10 06:56:51,538 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2019-09-10 06:56:52,302 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 06:56:52,678 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:56:52,986 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:56:53,339 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 06:56:53,694 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-09-10 06:56:54,257 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-10 06:56:54,861 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:56:55,075 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-10 06:56:55,318 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2019-09-10 06:56:55,560 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 06:56:55,932 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-10 06:56:56,405 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 06:56:56,745 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 06:56:57,475 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:56:57,647 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:56:57,849 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2019-09-10 06:56:58,266 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 06:56:58,629 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2019-09-10 06:56:59,410 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 06:56:59,590 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:57:00,078 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2019-09-10 06:57:01,157 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 06:57:01,504 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 06:57:02,248 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-10 06:57:02,471 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-09-10 06:57:02,674 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-10 06:57:02,857 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-10 06:57:03,325 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-10 06:57:04,142 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 06:57:04,876 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-10 06:57:05,112 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 06:57:05,595 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 06:57:05,975 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 06:57:06,215 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 06:57:06,390 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:57:07,004 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-10 06:57:07,502 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2019-09-10 06:57:07,877 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:57:08,252 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-10 06:57:08,835 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:57:09,014 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:57:09,461 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 06:57:09,839 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 06:57:10,465 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 06:57:10,747 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 06:57:10,988 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2019-09-10 06:57:11,278 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 06:57:11,509 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-09-10 06:57:11,757 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 06:57:13,195 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-10 06:57:13,398 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-10 06:57:13,841 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-10 06:57:14,036 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:57:14,264 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-09-10 06:57:15,090 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 06:57:15,536 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 06:57:15,717 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-10 06:57:16,270 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:57:16,484 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:57:16,670 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-10 06:57:16,840 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:57:17,127 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-10 06:57:17,418 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 06:57:17,733 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2019-09-10 06:57:17,913 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:57:18,118 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-10 06:57:18,319 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-10 06:57:18,795 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-10 06:57:18,955 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:57:19,133 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:57:19,690 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2019-09-10 06:57:19,933 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2019-09-10 06:57:20,148 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-10 06:57:20,340 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 06:57:20,537 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 06:57:20,731 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:57:21,521 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-09-10 06:57:21,754 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:57:21,923 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:57:22,106 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-09-10 06:57:22,353 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-10 06:57:23,300 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 06:57:23,492 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 06:57:23,731 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2019-09-10 06:57:24,108 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 06:57:24,649 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 06:57:25,072 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 06:57:25,375 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:57:26,020 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 06:57:26,523 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 06:57:26,802 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 06:57:26,989 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65