/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:18:07,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:18:07,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:18:07,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:18:07,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:18:07,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:18:07,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:18:07,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:18:07,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:18:07,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:18:07,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:18:07,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:18:07,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:18:07,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:18:07,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:18:07,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:18:07,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:18:07,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:18:07,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:18:07,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:18:07,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:18:07,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:18:07,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:18:07,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:18:07,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 05:18:07,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 05:18:07,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 05:18:07,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 05:18:07,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 05:18:07,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 05:18:07,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:18:07,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:18:07,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:18:07,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:18:07,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:18:07,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:18:07,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:18:07,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:18:07,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:18:07,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:18:07,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:18:07,308 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 05:18:07,340 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:18:07,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:18:07,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:18:07,341 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:18:07,341 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:18:07,342 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:18:07,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:18:07,342 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:18:07,342 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:18:07,342 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:18:07,342 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:18:07,343 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:18:07,343 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:18:07,343 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:18:07,343 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:18:07,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:18:07,344 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:18:07,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:18:07,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:18:07,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:18:07,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:18:07,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:18:07,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:18:07,345 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:18:07,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:18:07,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:18:07,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:18:07,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:18:07,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:18:07,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:18:07,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:18:07,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:18:07,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:18:07,347 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:18:07,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:18:07,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:18:07,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:18:07,348 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:18:07,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:18:07,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:18:07,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:18:07,632 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:18:07,632 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:18:07,633 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c [2019-11-24 05:18:07,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6fb1b253/b7d91a645ff7408489a3827cbce99ea1/FLAG5d0f1f50b [2019-11-24 05:18:08,280 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:18:08,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c [2019-11-24 05:18:08,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6fb1b253/b7d91a645ff7408489a3827cbce99ea1/FLAG5d0f1f50b [2019-11-24 05:18:08,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6fb1b253/b7d91a645ff7408489a3827cbce99ea1 [2019-11-24 05:18:08,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:18:08,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:18:08,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:18:08,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:18:08,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:18:08,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:18:08" (1/1) ... [2019-11-24 05:18:08,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2136f335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:08, skipping insertion in model container [2019-11-24 05:18:08,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:18:08" (1/1) ... [2019-11-24 05:18:08,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:18:08,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:18:09,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:18:09,212 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:18:09,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:18:09,353 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:18:09,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09 WrapperNode [2019-11-24 05:18:09,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:18:09,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:18:09,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:18:09,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:18:09,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09" (1/1) ... [2019-11-24 05:18:09,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09" (1/1) ... [2019-11-24 05:18:09,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:18:09,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:18:09,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:18:09,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:18:09,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09" (1/1) ... [2019-11-24 05:18:09,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09" (1/1) ... [2019-11-24 05:18:09,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09" (1/1) ... [2019-11-24 05:18:09,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09" (1/1) ... [2019-11-24 05:18:09,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09" (1/1) ... [2019-11-24 05:18:09,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09" (1/1) ... [2019-11-24 05:18:09,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09" (1/1) ... [2019-11-24 05:18:09,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:18:09,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:18:09,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:18:09,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:18:09,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09" (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 05:18:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:18:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:18:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:18:09,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:18:12,026 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:18:12,027 INFO L284 CfgBuilder]: Removed 196 assume(true) statements. [2019-11-24 05:18:12,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:18:12 BoogieIcfgContainer [2019-11-24 05:18:12,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:18:12,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:18:12,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:18:12,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:18:12,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:18:08" (1/3) ... [2019-11-24 05:18:12,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344dc376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:18:12, skipping insertion in model container [2019-11-24 05:18:12,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:09" (2/3) ... [2019-11-24 05:18:12,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344dc376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:18:12, skipping insertion in model container [2019-11-24 05:18:12,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:18:12" (3/3) ... [2019-11-24 05:18:12,042 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product47.cil.c [2019-11-24 05:18:12,052 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:18:12,062 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:18:12,074 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:18:12,106 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:18:12,107 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:18:12,107 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:18:12,107 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:18:12,107 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:18:12,108 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:18:12,108 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:18:12,108 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:18:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:18:12,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:18:12,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:12,141 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:12,141 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:12,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:12,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1265386983, now seen corresponding path program 1 times [2019-11-24 05:18:12,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:12,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330074202] [2019-11-24 05:18:12,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:18:12,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330074202] [2019-11-24 05:18:12,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:18:12,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:18:12,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564944372] [2019-11-24 05:18:12,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:18:12,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:18:12,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:18:12,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:18:12,512 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-11-24 05:18:12,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:18:12,532 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2019-11-24 05:18:12,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:18:12,533 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 05:18:12,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:18:12,544 INFO L225 Difference]: With dead ends: 44 [2019-11-24 05:18:12,544 INFO L226 Difference]: Without dead ends: 21 [2019-11-24 05:18:12,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:18:12,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-24 05:18:12,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-24 05:18:12,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 05:18:12,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-24 05:18:12,580 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 7 [2019-11-24 05:18:12,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:18:12,580 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-24 05:18:12,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:18:12,581 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-24 05:18:12,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:18:12,581 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:12,581 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:12,582 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:12,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:12,582 INFO L82 PathProgramCache]: Analyzing trace with hash 736856208, now seen corresponding path program 1 times [2019-11-24 05:18:12,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:12,583 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742124522] [2019-11-24 05:18:12,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:18:12,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742124522] [2019-11-24 05:18:12,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:18:12,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:18:12,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606092070] [2019-11-24 05:18:12,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:18:12,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:18:12,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:18:12,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:18:12,953 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2019-11-24 05:18:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:18:13,155 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-11-24 05:18:13,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:18:13,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 05:18:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:18:13,157 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:18:13,158 INFO L226 Difference]: Without dead ends: 44 [2019-11-24 05:18:13,159 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:18:13,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-24 05:18:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2019-11-24 05:18:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-24 05:18:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2019-11-24 05:18:13,168 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2019-11-24 05:18:13,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:18:13,169 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2019-11-24 05:18:13,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:18:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2019-11-24 05:18:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:18:13,170 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:13,170 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:13,170 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:13,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:13,171 INFO L82 PathProgramCache]: Analyzing trace with hash -998165322, now seen corresponding path program 1 times [2019-11-24 05:18:13,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:13,171 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87952222] [2019-11-24 05:18:13,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:18:13,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87952222] [2019-11-24 05:18:13,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987007693] [2019-11-24 05:18:13,377 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 [2019-11-24 05:18:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:13,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-24 05:18:13,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:18:13,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:13,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:13,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:13,980 WARN L192 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2019-11-24 05:18:14,184 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-11-24 05:18:14,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,228 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,258 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,279 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,303 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:18:14,370 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:18:14,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,400 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,401 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,413 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,417 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,420 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,423 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,428 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,440 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,442 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,451 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,469 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,471 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,481 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,484 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,486 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,516 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,529 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,534 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,549 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,550 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,553 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,570 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,576 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:18:14,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [989999118] [2019-11-24 05:18:14,666 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:18:14,666 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:18:14,672 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:18:14,680 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:18:14,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:18:24,327 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:18:25,978 WARN L192 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:18:26,167 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:18:28,015 WARN L192 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 840 DAG size of output: 730 [2019-11-24 05:18:30,728 WARN L192 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 820 DAG size of output: 811 [2019-11-24 05:18:49,467 WARN L192 SmtUtils]: Spent 14.09 s on a formula simplification. DAG size of input: 3170 DAG size of output: 1822