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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:39:38,036 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-15 01:39:38,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:39:38,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:39:38,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:39:38,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:39:38,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:39:38,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:39:38,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:39:38,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:39:38,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:39:38,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:39:38,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:39:38,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:39:38,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:39:38,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:39:38,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:39:38,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:39:38,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:39:38,128 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:39:38,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:39:38,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:39:38,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:39:38,130 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:39:38,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:39:38,131 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:39:38,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:39:38,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:39:38,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:39:38,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:39:38,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:39:38,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:39:38,133 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:39:38,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:39:38,134 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:39:38,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:39:38,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:39:38,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:39:38,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:39:38,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:39:38,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:39:38,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:39:38,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:39:38,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:39:38,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:39:38,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:39:38,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:39:38,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:39:38,413 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:39:38,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:39:38,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:39:38,432 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:39:38,433 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:39:38,433 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2019-10-15 01:39:38,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1942a1db/e32d4d8da38c4d84a9d55e49e30504ad/FLAG024bbcb81 [2019-10-15 01:39:39,074 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:39:39,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2019-10-15 01:39:39,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1942a1db/e32d4d8da38c4d84a9d55e49e30504ad/FLAG024bbcb81 [2019-10-15 01:39:39,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1942a1db/e32d4d8da38c4d84a9d55e49e30504ad [2019-10-15 01:39:39,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:39:39,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:39:39,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:39:39,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:39:39,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:39:39,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:39:39" (1/1) ... [2019-10-15 01:39:39,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d728e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:39, skipping insertion in model container [2019-10-15 01:39:39,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:39:39" (1/1) ... [2019-10-15 01:39:39,441 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:39:39,503 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:39:40,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:39:40,016 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:39:40,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:39:40,160 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:39:40,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40 WrapperNode [2019-10-15 01:39:40,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:39:40,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:39:40,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:39:40,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:39:40,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:39:40,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:39:40,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:39:40,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:39:40,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (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 [2019-10-15 01:39:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:39:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:39:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:39:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:39:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:39:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:39:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:39:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:39:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:39:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:39:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:39:42,412 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:39:42,413 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:39:42,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:39:42 BoogieIcfgContainer [2019-10-15 01:39:42,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:39:42,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:39:42,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:39:42,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:39:42,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:39:39" (1/3) ... [2019-10-15 01:39:42,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c260c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:39:42, skipping insertion in model container [2019-10-15 01:39:42,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (2/3) ... [2019-10-15 01:39:42,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c260c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:39:42, skipping insertion in model container [2019-10-15 01:39:42,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:39:42" (3/3) ... [2019-10-15 01:39:42,423 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2019-10-15 01:39:42,433 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:39:42,442 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:39:42,454 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:39:42,480 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:39:42,480 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:39:42,481 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:39:42,481 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:39:42,481 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:39:42,481 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:39:42,482 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:39:42,482 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:39:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-15 01:39:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-15 01:39:42,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:42,514 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:39:42,516 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:42,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:42,522 INFO L82 PathProgramCache]: Analyzing trace with hash 826822500, now seen corresponding path program 1 times [2019-10-15 01:39:42,532 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:42,532 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307514735] [2019-10-15 01:39:42,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:42,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:42,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:42,995 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307514735] [2019-10-15 01:39:42,996 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:39:42,996 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:39:42,997 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652480895] [2019-10-15 01:39:43,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:39:43,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:43,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:39:43,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:39:43,021 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-15 01:39:43,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:43,564 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-15 01:39:43,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:39:43,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-15 01:39:43,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:43,585 INFO L225 Difference]: With dead ends: 246 [2019-10-15 01:39:43,585 INFO L226 Difference]: Without dead ends: 157 [2019-10-15 01:39:43,590 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:39:43,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-15 01:39:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-15 01:39:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-15 01:39:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 291 transitions. [2019-10-15 01:39:43,660 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 291 transitions. Word has length 77 [2019-10-15 01:39:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:43,661 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 291 transitions. [2019-10-15 01:39:43,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:39:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 291 transitions. [2019-10-15 01:39:43,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:39:43,666 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:43,667 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:39:43,667 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:43,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:43,668 INFO L82 PathProgramCache]: Analyzing trace with hash 579797451, now seen corresponding path program 1 times [2019-10-15 01:39:43,668 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:43,668 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147482241] [2019-10-15 01:39:43,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:43,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:43,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:43,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147482241] [2019-10-15 01:39:43,906 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:39:43,906 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:39:43,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290205511] [2019-10-15 01:39:43,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:39:43,909 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:43,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:39:43,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:39:43,910 INFO L87 Difference]: Start difference. First operand 157 states and 291 transitions. Second operand 3 states. [2019-10-15 01:39:44,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:44,347 INFO L93 Difference]: Finished difference Result 459 states and 872 transitions. [2019-10-15 01:39:44,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:39:44,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-15 01:39:44,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:44,358 INFO L225 Difference]: With dead ends: 459 [2019-10-15 01:39:44,359 INFO L226 Difference]: Without dead ends: 307 [2019-10-15 01:39:44,361 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:39:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2019-10-15 01:39:44,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 232. [2019-10-15 01:39:44,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-10-15 01:39:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 412 transitions. [2019-10-15 01:39:44,395 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 412 transitions. Word has length 94 [2019-10-15 01:39:44,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:44,396 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 412 transitions. [2019-10-15 01:39:44,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:39:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 412 transitions. [2019-10-15 01:39:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 01:39:44,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:44,405 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:39:44,405 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:44,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:44,406 INFO L82 PathProgramCache]: Analyzing trace with hash -164893417, now seen corresponding path program 1 times [2019-10-15 01:39:44,406 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:44,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574298670] [2019-10-15 01:39:44,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:44,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:44,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:44,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574298670] [2019-10-15 01:39:44,601 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:39:44,602 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:39:44,602 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912522049] [2019-10-15 01:39:44,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:39:44,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:44,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:39:44,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:39:44,609 INFO L87 Difference]: Start difference. First operand 232 states and 412 transitions. Second operand 6 states. [2019-10-15 01:39:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:45,200 INFO L93 Difference]: Finished difference Result 635 states and 1150 transitions. [2019-10-15 01:39:45,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:39:45,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-15 01:39:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:45,207 INFO L225 Difference]: With dead ends: 635 [2019-10-15 01:39:45,207 INFO L226 Difference]: Without dead ends: 408 [2019-10-15 01:39:45,211 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:39:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2019-10-15 01:39:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 398. [2019-10-15 01:39:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2019-10-15 01:39:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 649 transitions. [2019-10-15 01:39:45,272 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 649 transitions. Word has length 120 [2019-10-15 01:39:45,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:45,273 INFO L462 AbstractCegarLoop]: Abstraction has 398 states and 649 transitions. [2019-10-15 01:39:45,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:39:45,274 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 649 transitions. [2019-10-15 01:39:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 01:39:45,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:45,282 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:39:45,282 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:45,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:45,283 INFO L82 PathProgramCache]: Analyzing trace with hash 901532996, now seen corresponding path program 1 times [2019-10-15 01:39:45,283 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:45,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138957826] [2019-10-15 01:39:45,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:45,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:45,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:45,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138957826] [2019-10-15 01:39:45,490 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263672159] [2019-10-15 01:39:45,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:39:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:45,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:39:45,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:39:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:45,751 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:39:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:45,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1974928701] [2019-10-15 01:39:45,951 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-15 01:39:45,951 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:39:45,958 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:39:45,968 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:39:45,969 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:39:46,404 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 100 for LOIs [2019-10-15 01:39:47,998 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 189 [2019-10-15 01:39:49,429 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 140 for LOIs [2019-10-15 01:39:50,181 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-10-15 01:39:50,386 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-10-15 01:39:50,580 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-10-15 01:39:51,077 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-10-15 01:39:51,340 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-10-15 01:39:51,581 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2019-10-15 01:39:52,359 WARN L191 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-10-15 01:39:52,839 WARN L191 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-10-15 01:39:53,557 WARN L191 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-10-15 01:39:54,052 WARN L191 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-10-15 01:39:54,529 WARN L191 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2019-10-15 01:39:55,490 WARN L191 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:39:56,045 WARN L191 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:39:56,611 WARN L191 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2019-10-15 01:39:59,668 WARN L191 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:00,194 WARN L191 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:00,742 WARN L191 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-15 01:40:01,530 WARN L191 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:02,064 WARN L191 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:02,606 WARN L191 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2019-10-15 01:40:03,380 WARN L191 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:03,927 WARN L191 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:04,470 WARN L191 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2019-10-15 01:40:07,236 WARN L191 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:07,765 WARN L191 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:08,308 WARN L191 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2019-10-15 01:40:09,145 WARN L191 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:09,669 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:10,242 WARN L191 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2019-10-15 01:40:13,008 WARN L191 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:13,529 WARN L191 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:14,091 WARN L191 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2019-10-15 01:40:15,026 WARN L191 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:15,549 WARN L191 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:16,106 WARN L191 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2019-10-15 01:40:17,208 WARN L191 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:17,745 WARN L191 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-10-15 01:40:18,295 WARN L191 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2019-10-15 01:40:19,057 WARN L191 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 211