/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_spec5_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 18:16:31,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 18:16:31,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 18:16:31,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 18:16:31,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 18:16:31,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 18:16:31,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 18:16:31,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 18:16:31,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 18:16:31,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 18:16:31,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 18:16:31,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 18:16:31,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 18:16:31,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 18:16:31,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 18:16:31,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 18:16:31,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 18:16:31,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 18:16:31,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 18:16:31,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 18:16:31,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 18:16:31,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 18:16:31,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 18:16:31,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 18:16:31,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 18:16:31,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 18:16:31,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 18:16:31,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 18:16:31,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 18:16:31,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 18:16:31,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 18:16:31,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 18:16:31,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 18:16:31,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 18:16:31,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 18:16:31,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 18:16:31,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 18:16:31,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 18:16:31,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 18:16:31,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 18:16:31,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 18:16:31,489 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 18:16:31,526 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 18:16:31,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 18:16:31,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 18:16:31,527 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 18:16:31,527 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 18:16:31,528 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 18:16:31,530 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 18:16:31,530 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 18:16:31,530 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 18:16:31,530 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 18:16:31,531 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 18:16:31,531 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 18:16:31,531 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 18:16:31,531 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 18:16:31,531 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 18:16:31,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 18:16:31,532 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 18:16:31,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 18:16:31,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 18:16:31,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 18:16:31,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 18:16:31,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 18:16:31,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 18:16:31,535 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 18:16:31,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 18:16:31,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 18:16:31,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 18:16:31,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 18:16:31,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 18:16:31,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 18:16:31,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 18:16:31,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 18:16:31,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 18:16:31,537 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 18:16:31,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 18:16:31,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 18:16:31,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 18:16:31,538 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 18:16:31,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 18:16:31,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 18:16:31,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 18:16:31,837 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 18:16:31,838 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 18:16:31,838 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product29.cil.c [2019-11-24 18:16:31,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c4c8239/7489fea8f2124412b6cea278fd1a7b71/FLAGf1c50c755 [2019-11-24 18:16:32,399 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 18:16:32,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product29.cil.c [2019-11-24 18:16:32,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c4c8239/7489fea8f2124412b6cea278fd1a7b71/FLAGf1c50c755 [2019-11-24 18:16:32,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c4c8239/7489fea8f2124412b6cea278fd1a7b71 [2019-11-24 18:16:32,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 18:16:32,763 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 18:16:32,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 18:16:32,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 18:16:32,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 18:16:32,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:16:32" (1/1) ... [2019-11-24 18:16:32,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ad34fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:32, skipping insertion in model container [2019-11-24 18:16:32,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:16:32" (1/1) ... [2019-11-24 18:16:32,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 18:16:32,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 18:16:33,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 18:16:33,434 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 18:16:33,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 18:16:33,553 INFO L208 MainTranslator]: Completed translation [2019-11-24 18:16:33,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:33 WrapperNode [2019-11-24 18:16:33,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 18:16:33,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 18:16:33,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 18:16:33,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 18:16:33,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:33" (1/1) ... [2019-11-24 18:16:33,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:33" (1/1) ... [2019-11-24 18:16:33,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 18:16:33,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 18:16:33,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 18:16:33,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 18:16:33,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:33" (1/1) ... [2019-11-24 18:16:33,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:33" (1/1) ... [2019-11-24 18:16:33,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:33" (1/1) ... [2019-11-24 18:16:33,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:33" (1/1) ... [2019-11-24 18:16:33,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:33" (1/1) ... [2019-11-24 18:16:33,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:33" (1/1) ... [2019-11-24 18:16:33,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:33" (1/1) ... [2019-11-24 18:16:33,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 18:16:33,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 18:16:33,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 18:16:33,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 18:16:33,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:16:33" (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 18:16:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 18:16:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 18:16:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 18:16:33,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 18:16:35,838 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 18:16:35,838 INFO L284 CfgBuilder]: Removed 170 assume(true) statements. [2019-11-24 18:16:35,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:16:35 BoogieIcfgContainer [2019-11-24 18:16:35,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 18:16:35,840 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-11-24 18:16:35,840 INFO L271 PluginConnector]: Initializing Sifa... [2019-11-24 18:16:35,841 INFO L275 PluginConnector]: Sifa initialized [2019-11-24 18:16:35,842 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:16:35" (1/1) ... [2019-11-24 18:16:35,842 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 18:16:35,868 INFO L159 IcfgInterpreter]: Started Sifa with 3 locations of interest [2019-11-24 18:16:35,868 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 18:16:35,877 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 18:16:35,885 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 18:16:35,887 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 18:16:45,877 WARN L192 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 18:16:47,545 WARN L192 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 18:16:47,683 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 18:16:48,363 WARN L192 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 661 DAG size of output: 552 [2019-11-24 18:16:48,857 WARN L192 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 661 DAG size of output: 552 [2019-11-24 18:16:49,358 WARN L192 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 551 [2019-11-24 18:16:49,908 WARN L192 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 553 [2019-11-24 18:16:51,117 WARN L192 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 656 [2019-11-24 18:16:57,806 WARN L192 SmtUtils]: Spent 5.83 s on a formula simplification. DAG size of input: 939 DAG size of output: 812 [2019-11-24 18:17:01,572 WARN L192 SmtUtils]: Spent 3.75 s on a formula simplification. DAG size of input: 939 DAG size of output: 812 [2019-11-24 18:17:05,147 WARN L192 SmtUtils]: Spent 3.57 s on a formula simplification. DAG size of input: 804 DAG size of output: 788 [2019-11-24 18:17:08,464 WARN L192 SmtUtils]: Spent 3.26 s on a formula simplification that was a NOOP. DAG size: 801 [2019-11-24 18:17:12,865 WARN L192 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 804 DAG size of output: 789 [2019-11-24 18:17:18,570 WARN L192 SmtUtils]: Spent 4.77 s on a formula simplification. DAG size of input: 1066 DAG size of output: 825 [2019-11-24 18:17:23,173 WARN L192 SmtUtils]: Spent 4.59 s on a formula simplification. DAG size of input: 1066 DAG size of output: 825 [2019-11-24 18:17:26,834 WARN L192 SmtUtils]: Spent 3.65 s on a formula simplification. DAG size of input: 806 DAG size of output: 802 [2019-11-24 18:17:33,737 WARN L192 SmtUtils]: Spent 5.02 s on a formula simplification. DAG size of input: 1019 DAG size of output: 834 [2019-11-24 18:17:38,725 WARN L192 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 1019 DAG size of output: 834 [2019-11-24 18:17:42,929 WARN L192 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 825 DAG size of output: 818 [2019-11-24 18:17:52,506 WARN L192 SmtUtils]: Spent 9.56 s on a formula simplification. DAG size of input: 1154 DAG size of output: 960 [2019-11-24 18:18:02,057 WARN L192 SmtUtils]: Spent 9.54 s on a formula simplification. DAG size of input: 1154 DAG size of output: 960