java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/bubble_sort-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-55cd5f5 [2019-08-14 20:38:37,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-14 20:38:37,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-14 20:38:37,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-14 20:38:37,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-14 20:38:37,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-14 20:38:37,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-14 20:38:37,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-14 20:38:37,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-14 20:38:37,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-14 20:38:37,968 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-14 20:38:37,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-14 20:38:37,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-14 20:38:37,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-14 20:38:37,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-14 20:38:37,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-14 20:38:37,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-14 20:38:37,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-14 20:38:37,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-14 20:38:37,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-14 20:38:37,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-14 20:38:37,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-14 20:38:37,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-14 20:38:37,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-14 20:38:37,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-14 20:38:37,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-14 20:38:37,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-14 20:38:37,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-14 20:38:37,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-14 20:38:37,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-14 20:38:37,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-14 20:38:37,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-14 20:38:37,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-14 20:38:37,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-14 20:38:37,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-14 20:38:37,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-14 20:38:37,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-14 20:38:37,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-14 20:38:37,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-14 20:38:37,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-14 20:38:37,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-14 20:38:37,994 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 [2019-08-14 20:38:38,008 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-14 20:38:38,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-14 20:38:38,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-14 20:38:38,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-14 20:38:38,010 INFO L138 SettingsManager]: * Use SBE=true [2019-08-14 20:38:38,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-14 20:38:38,010 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-14 20:38:38,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-14 20:38:38,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-14 20:38:38,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-14 20:38:38,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-14 20:38:38,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-14 20:38:38,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-14 20:38:38,011 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-14 20:38:38,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-14 20:38:38,012 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-14 20:38:38,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-14 20:38:38,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-14 20:38:38,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-14 20:38:38,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-14 20:38:38,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-14 20:38:38,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-14 20:38:38,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-14 20:38:38,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-14 20:38:38,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-14 20:38:38,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-14 20:38:38,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-14 20:38:38,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-14 20:38:38,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-14 20:38:38,044 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-14 20:38:38,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-14 20:38:38,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-14 20:38:38,060 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-14 20:38:38,060 INFO L275 PluginConnector]: CDTParser initialized [2019-08-14 20:38:38,061 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/bubble_sort-2.i [2019-08-14 20:38:38,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c3038909/a5762e8ccaad481f9a7ef8d58950b7de/FLAGa895690c2 [2019-08-14 20:38:38,558 INFO L306 CDTParser]: Found 1 translation units. [2019-08-14 20:38:38,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i [2019-08-14 20:38:38,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c3038909/a5762e8ccaad481f9a7ef8d58950b7de/FLAGa895690c2 [2019-08-14 20:38:38,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c3038909/a5762e8ccaad481f9a7ef8d58950b7de [2019-08-14 20:38:38,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-14 20:38:38,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-14 20:38:38,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-14 20:38:38,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-14 20:38:38,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-14 20:38:38,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 08:38:38" (1/1) ... [2019-08-14 20:38:38,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3d10e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 08:38:38, skipping insertion in model container [2019-08-14 20:38:38,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 08:38:38" (1/1) ... [2019-08-14 20:38:38,907 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-14 20:38:38,965 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-14 20:38:39,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-14 20:38:39,287 INFO L188 MainTranslator]: Completed pre-run [2019-08-14 20:38:39,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-14 20:38:39,500 INFO L192 MainTranslator]: Completed translation [2019-08-14 20:38:39,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 08:38:39 WrapperNode [2019-08-14 20:38:39,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-14 20:38:39,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-14 20:38:39,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-14 20:38:39,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-14 20:38:39,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 08:38:39" (1/1) ... [2019-08-14 20:38:39,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 08:38:39" (1/1) ... [2019-08-14 20:38:39,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 08:38:39" (1/1) ... [2019-08-14 20:38:39,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 08:38:39" (1/1) ... [2019-08-14 20:38:39,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 08:38:39" (1/1) ... [2019-08-14 20:38:39,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 08:38:39" (1/1) ... [2019-08-14 20:38:39,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 08:38:39" (1/1) ... [2019-08-14 20:38:39,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-14 20:38:39,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-14 20:38:39,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-14 20:38:39,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-14 20:38:39,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 08:38:39" (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 [2019-08-14 20:38:39,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-14 20:38:39,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-14 20:38:39,660 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2019-08-14 20:38:39,660 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2019-08-14 20:38:39,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2019-08-14 20:38:39,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2019-08-14 20:38:39,660 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2019-08-14 20:38:39,661 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2019-08-14 20:38:39,661 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2019-08-14 20:38:39,661 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2019-08-14 20:38:39,661 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2019-08-14 20:38:39,661 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2019-08-14 20:38:39,661 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2019-08-14 20:38:39,662 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2019-08-14 20:38:39,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-14 20:38:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-14 20:38:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-08-14 20:38:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-08-14 20:38:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-08-14 20:38:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-08-14 20:38:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-08-14 20:38:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-08-14 20:38:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-08-14 20:38:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2019-08-14 20:38:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-08-14 20:38:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2019-08-14 20:38:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-08-14 20:38:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2019-08-14 20:38:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-08-14 20:38:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2019-08-14 20:38:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2019-08-14 20:38:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2019-08-14 20:38:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2019-08-14 20:38:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-08-14 20:38:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-08-14 20:38:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2019-08-14 20:38:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2019-08-14 20:38:39,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-08-14 20:38:39,666 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2019-08-14 20:38:39,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-08-14 20:38:39,666 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2019-08-14 20:38:39,666 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2019-08-14 20:38:39,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-14 20:38:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-14 20:38:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-08-14 20:38:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-08-14 20:38:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-14 20:38:40,232 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2019-08-14 20:38:40,556 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-14 20:38:40,556 INFO L283 CfgBuilder]: Removed 23 assume(true) statements. [2019-08-14 20:38:40,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 08:38:40 BoogieIcfgContainer [2019-08-14 20:38:40,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-14 20:38:40,559 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-14 20:38:40,559 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-14 20:38:40,559 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-14 20:38:40,560 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 08:38:40" (1/1) ... [2019-08-14 20:38:40,838 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2019-08-14 20:38:41,041 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-08-14 20:38:41,251 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-08-14 20:38:41,266 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-08-14 20:38:41,597 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-08-14 20:38:41,779 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2019-08-14 20:38:41,941 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2019-08-14 20:38:42,356 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-08-14 20:47:29,459 WARN L188 SmtUtils]: Spent 8.78 m on a formula simplification. DAG size of input: 219 DAG size of output: 209 [2019-08-14 20:47:29,875 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45