/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 17:51:35,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 17:51:35,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 17:51:35,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 17:51:35,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 17:51:35,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 17:51:35,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 17:51:35,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 17:51:35,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 17:51:35,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 17:51:35,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 17:51:35,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 17:51:35,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 17:51:35,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 17:51:35,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 17:51:35,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 17:51:35,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 17:51:35,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 17:51:35,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 17:51:35,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 17:51:35,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 17:51:35,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 17:51:35,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 17:51:35,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 17:51:35,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 17:51:35,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 17:51:35,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 17:51:35,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 17:51:35,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 17:51:35,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 17:51:35,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 17:51:35,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 17:51:35,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 17:51:35,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 17:51:35,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 17:51:35,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 17:51:35,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 17:51:35,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 17:51:35,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 17:51:35,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 17:51:35,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 17:51:35,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 17:51:35,751 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 17:51:35,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 17:51:35,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 17:51:35,752 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 17:51:35,753 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 17:51:35,755 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 17:51:35,755 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 17:51:35,755 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 17:51:35,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 17:51:35,755 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 17:51:35,755 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 17:51:35,756 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 17:51:35,756 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 17:51:35,756 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 17:51:35,756 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 17:51:35,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 17:51:35,758 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 17:51:35,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 17:51:35,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 17:51:35,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 17:51:35,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 17:51:35,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 17:51:35,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 17:51:35,760 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 17:51:35,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 17:51:35,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 17:51:35,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 17:51:35,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 17:51:35,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 17:51:35,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 17:51:35,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 17:51:35,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 17:51:35,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 17:51:35,762 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 17:51:35,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 17:51:35,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 17:51:35,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 17:51:35,764 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 17:51:36,024 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 17:51:36,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 17:51:36,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 17:51:36,042 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 17:51:36,042 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 17:51:36,043 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product09.cil.c [2019-11-24 17:51:36,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1906bbd49/c9f4d2eda9414fe3afdc78f91fc898e8/FLAGf747f90b7 [2019-11-24 17:51:36,581 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 17:51:36,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product09.cil.c [2019-11-24 17:51:36,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1906bbd49/c9f4d2eda9414fe3afdc78f91fc898e8/FLAGf747f90b7 [2019-11-24 17:51:36,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1906bbd49/c9f4d2eda9414fe3afdc78f91fc898e8 [2019-11-24 17:51:36,940 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 17:51:36,941 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 17:51:36,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 17:51:36,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 17:51:36,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 17:51:36,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:51:36" (1/1) ... [2019-11-24 17:51:36,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4108fcdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:36, skipping insertion in model container [2019-11-24 17:51:36,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:51:36" (1/1) ... [2019-11-24 17:51:36,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 17:51:37,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 17:51:37,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 17:51:37,470 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 17:51:37,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 17:51:37,587 INFO L208 MainTranslator]: Completed translation [2019-11-24 17:51:37,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:37 WrapperNode [2019-11-24 17:51:37,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 17:51:37,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 17:51:37,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 17:51:37,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 17:51:37,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:37" (1/1) ... [2019-11-24 17:51:37,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:37" (1/1) ... [2019-11-24 17:51:37,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 17:51:37,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 17:51:37,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 17:51:37,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 17:51:37,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:37" (1/1) ... [2019-11-24 17:51:37,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:37" (1/1) ... [2019-11-24 17:51:37,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:37" (1/1) ... [2019-11-24 17:51:37,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:37" (1/1) ... [2019-11-24 17:51:37,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:37" (1/1) ... [2019-11-24 17:51:37,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:37" (1/1) ... [2019-11-24 17:51:37,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:37" (1/1) ... [2019-11-24 17:51:37,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 17:51:37,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 17:51:37,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 17:51:37,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 17:51:37,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:51:37" (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 [2019-11-24 17:51:37,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 17:51:37,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 17:51:37,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 17:51:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 17:51:39,038 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 17:51:39,038 INFO L284 CfgBuilder]: Removed 68 assume(true) statements. [2019-11-24 17:51:39,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:51:39 BoogieIcfgContainer [2019-11-24 17:51:39,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 17:51:39,040 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-11-24 17:51:39,040 INFO L271 PluginConnector]: Initializing Sifa... [2019-11-24 17:51:39,041 INFO L275 PluginConnector]: Sifa initialized [2019-11-24 17:51:39,042 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:51:39" (1/1) ... [2019-11-24 17:51:39,042 INFO L79 SifaObserver]: LogSizeWrapperFluid Intern Fluid=SizeLimitFluid ♦ Abstract Domain=CompoundDomain ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ CompoundDomain Intern Domains=ExplicitValueDomain;IntervalDomain ♦ Call Summarizer=TopInputCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ SizeLimitFluid Max. Disjunctions=8 ♦ Simplification Technique=SIMPLIFY_QUICK ♦ SizeLimitFluid Max. DAG Size=-1 [2019-11-24 17:51:39,066 INFO L159 IcfgInterpreter]: Started Sifa with 3 locations of interest [2019-11-24 17:51:39,066 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 17:51:39,074 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 17:51:39,081 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 17:51:39,083 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 17:51:47,715 WARN L192 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 17:51:49,707 WARN L192 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 17:51:49,874 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 17:51:50,563 WARN L192 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 563 DAG size of output: 548 [2019-11-24 17:51:50,958 WARN L192 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 563 DAG size of output: 548 [2019-11-24 17:51:51,383 WARN L192 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-24 17:51:51,870 WARN L192 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 549 [2019-11-24 17:51:52,282 WARN L192 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 549 [2019-11-24 17:51:52,632 WARN L192 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 549 [2019-11-24 17:51:53,077 WARN L192 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-24 17:51:53,808 WARN L192 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 653 [2019-11-24 17:51:55,837 WARN L192 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 749 DAG size of output: 688 [2019-11-24 17:51:56,913 WARN L192 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 749 DAG size of output: 688 [2019-11-24 17:51:58,088 WARN L192 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 687 DAG size of output: 686 [2019-11-24 17:52:01,291 WARN L192 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 761 DAG size of output: 710 [2019-11-24 17:52:03,391 WARN L192 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 761 DAG size of output: 710 [2019-11-24 17:52:04,629 WARN L192 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 705 [2019-11-24 17:52:06,287 WARN L192 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 716 [2019-11-24 17:52:09,237 WARN L192 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 718 DAG size of output: 718 [2019-11-24 17:52:21,096 WARN L192 SmtUtils]: Spent 7.48 s on a formula simplification. DAG size of input: 1186 DAG size of output: 844 [2019-11-24 17:52:27,862 WARN L192 SmtUtils]: Spent 6.75 s on a formula simplification. DAG size of input: 1186 DAG size of output: 844 [2019-11-24 17:52:32,355 WARN L192 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 807 DAG size of output: 785 [2019-11-24 17:52:45,686 WARN L192 SmtUtils]: Spent 12.93 s on a formula simplification. DAG size of input: 1289 DAG size of output: 945 [2019-11-24 17:52:57,897 WARN L192 SmtUtils]: Spent 12.19 s on a formula simplification. DAG size of input: 1289 DAG size of output: 945 [2019-11-24 17:53:06,065 WARN L192 SmtUtils]: Spent 8.15 s on a formula simplification. DAG size of input: 897 DAG size of output: 870