/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/ldv-sets/test_mutex_unlock_at_exit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 16:03:46,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 16:03:46,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 16:03:46,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 16:03:46,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 16:03:46,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 16:03:46,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 16:03:46,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 16:03:46,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 16:03:46,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 16:03:46,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 16:03:46,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 16:03:46,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 16:03:46,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 16:03:46,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 16:03:46,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 16:03:46,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 16:03:46,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 16:03:46,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 16:03:46,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 16:03:46,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 16:03:46,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 16:03:46,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 16:03:46,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 16:03:46,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 16:03:46,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 16:03:46,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 16:03:46,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 16:03:46,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 16:03:46,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 16:03:46,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 16:03:46,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 16:03:46,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 16:03:46,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 16:03:46,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 16:03:46,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 16:03:46,264 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 16:03:46,285 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 16:03:46,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 16:03:46,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 16:03:46,287 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 16:03:46,287 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 16:03:46,287 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 16:03:46,287 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 16:03:46,288 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 16:03:46,288 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 16:03:46,288 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 16:03:46,289 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 16:03:46,289 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 16:03:46,290 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 16:03:46,290 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 16:03:46,290 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 16:03:46,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 16:03:46,292 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 16:03:46,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 16:03:46,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 16:03:46,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 16:03:46,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 16:03:46,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 16:03:46,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 16:03:46,293 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 16:03:46,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 16:03:46,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 16:03:46,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 16:03:46,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 16:03:46,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 16:03:46,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 16:03:46,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 16:03:46,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 16:03:46,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 16:03:46,296 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 16:03:46,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 16:03:46,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 16:03:46,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 16:03:46,297 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 16:03:46,623 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 16:03:46,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 16:03:46,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 16:03:46,651 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 16:03:46,651 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 16:03:46,652 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-11-24 16:03:46,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08a08dca7/4e1a818bcecb47cfad7d9d9cdb588976/FLAG18be9a9e1 [2019-11-24 16:03:47,249 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 16:03:47,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-11-24 16:03:47,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08a08dca7/4e1a818bcecb47cfad7d9d9cdb588976/FLAG18be9a9e1 [2019-11-24 16:03:47,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08a08dca7/4e1a818bcecb47cfad7d9d9cdb588976 [2019-11-24 16:03:47,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 16:03:47,541 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 16:03:47,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 16:03:47,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 16:03:47,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 16:03:47,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:03:47" (1/1) ... [2019-11-24 16:03:47,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2973447e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:47, skipping insertion in model container [2019-11-24 16:03:47,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:03:47" (1/1) ... [2019-11-24 16:03:47,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 16:03:47,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 16:03:48,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 16:03:48,124 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 16:03:48,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 16:03:48,253 INFO L208 MainTranslator]: Completed translation [2019-11-24 16:03:48,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:48 WrapperNode [2019-11-24 16:03:48,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 16:03:48,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 16:03:48,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 16:03:48,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 16:03:48,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:48" (1/1) ... [2019-11-24 16:03:48,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:48" (1/1) ... [2019-11-24 16:03:48,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 16:03:48,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 16:03:48,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 16:03:48,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 16:03:48,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:48" (1/1) ... [2019-11-24 16:03:48,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:48" (1/1) ... [2019-11-24 16:03:48,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:48" (1/1) ... [2019-11-24 16:03:48,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:48" (1/1) ... [2019-11-24 16:03:48,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:48" (1/1) ... [2019-11-24 16:03:48,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:48" (1/1) ... [2019-11-24 16:03:48,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:48" (1/1) ... [2019-11-24 16:03:48,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 16:03:48,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 16:03:48,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 16:03:48,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 16:03:48,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:48" (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 16:03:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 16:03:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 16:03:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 16:03:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 16:03:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 16:03:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 16:03:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 16:03:48,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 16:03:49,816 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 16:03:49,817 INFO L284 CfgBuilder]: Removed 62 assume(true) statements. [2019-11-24 16:03:49,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:03:49 BoogieIcfgContainer [2019-11-24 16:03:49,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 16:03:49,820 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-11-24 16:03:49,820 INFO L271 PluginConnector]: Initializing Sifa... [2019-11-24 16:03:49,820 INFO L275 PluginConnector]: Sifa initialized [2019-11-24 16:03:49,822 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:03:49" (1/1) ... [2019-11-24 16:03:49,822 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 16:03:49,856 INFO L159 IcfgInterpreter]: Started Sifa with 4 locations of interest [2019-11-24 16:03:49,856 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 16:03:49,865 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 16:03:49,874 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 16:03:49,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 16:03:50,023 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 16:03:50,189 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-11-24 16:03:51,080 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 16:03:52,050 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2019-11-24 16:03:52,559 WARN L192 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2019-11-24 16:03:52,649 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-24 16:03:52,779 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-24 16:03:54,113 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 16:03:54,691 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-11-24 16:03:55,064 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-11-24 16:03:55,156 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 15 [2019-11-24 16:03:55,482 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 9840 conjuctions. This might take some time... [2019-11-24 16:03:59,167 WARN L192 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 123 [2019-11-24 16:04:00,253 WARN L192 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 135 [2019-11-24 16:04:01,313 WARN L192 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 135 [2019-11-24 16:04:02,057 WARN L192 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 123 [2019-11-24 16:04:02,170 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2019-11-24 16:04:03,159 WARN L192 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 115 [2019-11-24 16:04:04,262 WARN L192 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 127 [2019-11-24 16:04:05,323 WARN L192 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 127 [2019-11-24 16:04:06,227 WARN L192 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 115 [2019-11-24 16:04:06,397 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2019-11-24 16:04:06,402 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30