/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/array-crafted/bAnd4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:51:49,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:51:49,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:51:49,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:51:49,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:51:49,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:51:49,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:51:49,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:51:49,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:51:49,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:51:49,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:51:49,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:51:49,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:51:49,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:51:49,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:51:49,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:51:49,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:51:49,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:51:49,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:51:49,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:51:49,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:51:49,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:51:49,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:51:49,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:51:49,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:51:49,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 22:51:49,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 22:51:49,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 22:51:49,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 22:51:49,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 22:51:49,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 22:51:49,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 22:51:49,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 22:51:49,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:51:49,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:51:49,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:51:49,459 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 [2019-11-23 22:51:49,475 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:51:49,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:51:49,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 22:51:49,476 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 22:51:49,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 22:51:49,476 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 22:51:49,477 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 22:51:49,477 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 22:51:49,477 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 22:51:49,477 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 22:51:49,477 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 22:51:49,478 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 22:51:49,478 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 22:51:49,478 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 22:51:49,478 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 22:51:49,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:51:49,479 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:51:49,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:51:49,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:51:49,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:51:49,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:51:49,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:51:49,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:51:49,481 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:51:49,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:51:49,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:51:49,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:51:49,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:51:49,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:51:49,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:51:49,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:51:49,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:51:49,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:51:49,483 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 22:51:49,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:51:49,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:51:49,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:51:49,483 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 22:51:49,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:51:49,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:51:49,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:51:49,778 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:51:49,778 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:51:49,779 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd4.i [2019-11-23 22:51:49,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/623e8bfb1/773ae85b2d2f45bb9c17d9a1c36aefaa/FLAG28bd3c636 [2019-11-23 22:51:50,308 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:51:50,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/bAnd4.i [2019-11-23 22:51:50,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/623e8bfb1/773ae85b2d2f45bb9c17d9a1c36aefaa/FLAG28bd3c636 [2019-11-23 22:51:50,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/623e8bfb1/773ae85b2d2f45bb9c17d9a1c36aefaa [2019-11-23 22:51:50,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:51:50,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:51:50,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:51:50,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:51:50,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:51:50,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:51:50" (1/1) ... [2019-11-23 22:51:50,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274c4168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:50, skipping insertion in model container [2019-11-23 22:51:50,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:51:50" (1/1) ... [2019-11-23 22:51:50,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:51:50,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:51:50,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:51:51,009 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:51:51,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:51:51,128 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:51:51,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51 WrapperNode [2019-11-23 22:51:51,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:51:51,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:51:51,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:51:51,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:51:51,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51" (1/1) ... [2019-11-23 22:51:51,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51" (1/1) ... [2019-11-23 22:51:51,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:51:51,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:51:51,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:51:51,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:51:51,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51" (1/1) ... [2019-11-23 22:51:51,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51" (1/1) ... [2019-11-23 22:51:51,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51" (1/1) ... [2019-11-23 22:51:51,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51" (1/1) ... [2019-11-23 22:51:51,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51" (1/1) ... [2019-11-23 22:51:51,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51" (1/1) ... [2019-11-23 22:51:51,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51" (1/1) ... [2019-11-23 22:51:51,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:51:51,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:51:51,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:51:51,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:51:51,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51" (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 [2019-11-23 22:51:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:51:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:51:51,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:51:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:51:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 22:51:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:51:51,792 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:51:51,792 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 22:51:51,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:51:51 BoogieIcfgContainer [2019-11-23 22:51:51,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:51:51,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:51:51,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:51:51,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:51:51,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:51:50" (1/3) ... [2019-11-23 22:51:51,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea702a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:51:51, skipping insertion in model container [2019-11-23 22:51:51,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:51" (2/3) ... [2019-11-23 22:51:51,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea702a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:51:51, skipping insertion in model container [2019-11-23 22:51:51,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:51:51" (3/3) ... [2019-11-23 22:51:51,803 INFO L109 eAbstractionObserver]: Analyzing ICFG bAnd4.i [2019-11-23 22:51:51,812 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:51:51,821 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:51:51,832 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:51:51,859 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:51:51,859 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:51:51,859 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:51:51,859 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:51:51,860 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:51:51,860 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:51:51,860 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:51:51,861 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:51:51,876 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-23 22:51:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:51:51,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:51:51,882 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:51:51,883 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:51:51,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:51:51,888 INFO L82 PathProgramCache]: Analyzing trace with hash -977729615, now seen corresponding path program 1 times [2019-11-23 22:51:51,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:51:51,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935306074] [2019-11-23 22:51:51,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:51:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:51:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:51:52,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935306074] [2019-11-23 22:51:52,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:51:52,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:51:52,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846586460] [2019-11-23 22:51:52,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:51:52,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:51:52,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:51:52,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:51:52,058 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-23 22:51:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:51:52,089 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-11-23 22:51:52,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:51:52,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-23 22:51:52,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:51:52,101 INFO L225 Difference]: With dead ends: 21 [2019-11-23 22:51:52,102 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 22:51:52,105 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:51:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 22:51:52,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 22:51:52,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 22:51:52,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-11-23 22:51:52,143 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2019-11-23 22:51:52,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:51:52,144 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-23 22:51:52,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:51:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-11-23 22:51:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:51:52,145 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:51:52,145 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:51:52,145 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:51:52,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:51:52,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1165895748, now seen corresponding path program 1 times [2019-11-23 22:51:52,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:51:52,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778643095] [2019-11-23 22:51:52,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:51:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:51:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:51:52,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778643095] [2019-11-23 22:51:52,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809385626] [2019-11-23 22:51:52,209 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 [2019-11-23 22:51:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:51:52,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-23 22:51:52,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:51:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:51:52,325 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:51:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:51:52,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:51:52,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-23 22:51:52,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603899872] [2019-11-23 22:51:52,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:51:52,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:51:52,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:51:52,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:51:52,349 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-11-23 22:51:52,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:51:52,399 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2019-11-23 22:51:52,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:51:52,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-23 22:51:52,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:51:52,401 INFO L225 Difference]: With dead ends: 22 [2019-11-23 22:51:52,401 INFO L226 Difference]: Without dead ends: 16 [2019-11-23 22:51:52,402 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:51:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-23 22:51:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-23 22:51:52,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-23 22:51:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-11-23 22:51:52,410 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2019-11-23 22:51:52,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:51:52,411 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-23 22:51:52,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:51:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-11-23 22:51:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-23 22:51:52,412 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:51:52,413 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:51:52,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:51:52,617 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:51:52,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:51:52,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1510942468, now seen corresponding path program 1 times [2019-11-23 22:51:52,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:51:52,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799246610] [2019-11-23 22:51:52,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:51:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:51:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-23 22:51:52,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799246610] [2019-11-23 22:51:52,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353899391] [2019-11-23 22:51:52,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:51:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:51:52,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-23 22:51:52,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:51:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-23 22:51:52,775 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:51:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-23 22:51:52,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:51:52,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-23 22:51:52,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033567203] [2019-11-23 22:51:52,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:51:52,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:51:52,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:51:52,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:51:52,787 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-11-23 22:51:52,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:51:52,807 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-23 22:51:52,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:51:52,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-23 22:51:52,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:51:52,809 INFO L225 Difference]: With dead ends: 24 [2019-11-23 22:51:52,809 INFO L226 Difference]: Without dead ends: 18 [2019-11-23 22:51:52,810 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:51:52,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-23 22:51:52,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-23 22:51:52,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-23 22:51:52,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-23 22:51:52,815 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2019-11-23 22:51:52,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:51:52,816 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-23 22:51:52,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:51:52,816 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-23 22:51:52,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 22:51:52,817 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:51:52,817 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:51:53,027 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:51:53,028 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:51:53,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:51:53,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1316778556, now seen corresponding path program 1 times [2019-11-23 22:51:53,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:51:53,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601724832] [2019-11-23 22:51:53,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:51:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:51:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-23 22:51:53,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601724832] [2019-11-23 22:51:53,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215629625] [2019-11-23 22:51:53,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:51:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:51:53,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:51:53,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:51:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-23 22:51:53,152 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:51:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-23 22:51:53,175 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [757309410] [2019-11-23 22:51:53,200 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-23 22:51:53,201 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 22:51:53,207 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 22:51:53,214 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 22:51:53,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 22:52:03,670 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2019-11-23 22:52:19,153 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 234 [2019-11-23 22:52:36,581 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 308 [2019-11-23 22:52:43,025 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2019-11-23 22:52:52,421 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 333 [2019-11-23 22:52:54,822 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 341 [2019-11-23 22:52:54,969 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 339 [2019-11-23 22:52:57,552 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 346 [2019-11-23 22:53:00,308 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2019-11-23 22:53:00,583 WARN L192 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 346 [2019-11-23 22:53:05,423 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 356 DAG size of output: 353 [2019-11-23 22:53:08,141 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 356 [2019-11-23 22:53:10,752 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 359 [2019-11-23 22:53:13,232 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 362 [2019-11-23 22:53:13,349 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 360 [2019-11-23 22:53:13,572 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 362 [2019-11-23 22:53:16,245 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-11-23 22:53:16,361 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 366 [2019-11-23 22:53:18,981 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 374 [2019-11-23 22:53:19,101 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 370 [2019-11-23 22:53:21,730 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2019-11-23 22:53:21,852 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 374