/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/zero_sum5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:56:36,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:56:36,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:56:36,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:56:36,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:56:36,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:56:36,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:56:36,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:56:36,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:56:36,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:56:36,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:56:36,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:56:36,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:56:36,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:56:36,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:56:36,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:56:36,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:56:36,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:56:36,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:56:36,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:56:36,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:56:36,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:56:36,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:56:36,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:56:36,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:56:36,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 22:56:36,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 22:56:36,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 22:56:36,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 22:56:36,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 22:56:36,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 22:56:36,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 22:56:36,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 22:56:36,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:56:36,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:56:36,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:56:36,436 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 22:56:36,462 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:56:36,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:56:36,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 22:56:36,464 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 22:56:36,464 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 22:56:36,464 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 22:56:36,464 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 22:56:36,465 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 22:56:36,465 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 22:56:36,465 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 22:56:36,465 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 22:56:36,466 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 22:56:36,466 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 22:56:36,466 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 22:56:36,466 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 22:56:36,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:56:36,467 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:56:36,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:56:36,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:56:36,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:56:36,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:56:36,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:56:36,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:56:36,469 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:56:36,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:56:36,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:56:36,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:56:36,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:56:36,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:56:36,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:56:36,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:56:36,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:56:36,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:56:36,471 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 22:56:36,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:56:36,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:56:36,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:56:36,472 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 22:56:36,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:56:36,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:56:36,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:56:36,758 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:56:36,759 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:56:36,760 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum5.c [2019-11-23 22:56:36,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8112f1193/6368b4f8042549f4a8ad2c8912d7d540/FLAG14cdfb9a5 [2019-11-23 22:56:37,292 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:56:37,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum5.c [2019-11-23 22:56:37,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8112f1193/6368b4f8042549f4a8ad2c8912d7d540/FLAG14cdfb9a5 [2019-11-23 22:56:37,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8112f1193/6368b4f8042549f4a8ad2c8912d7d540 [2019-11-23 22:56:37,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:56:37,658 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:56:37,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:56:37,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:56:37,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:56:37,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:56:37" (1/1) ... [2019-11-23 22:56:37,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e534208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:37, skipping insertion in model container [2019-11-23 22:56:37,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:56:37" (1/1) ... [2019-11-23 22:56:37,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:56:37,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:56:37,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:56:37,960 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:56:37,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:56:38,103 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:56:38,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38 WrapperNode [2019-11-23 22:56:38,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:56:38,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:56:38,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:56:38,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:56:38,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38" (1/1) ... [2019-11-23 22:56:38,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38" (1/1) ... [2019-11-23 22:56:38,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:56:38,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:56:38,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:56:38,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:56:38,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38" (1/1) ... [2019-11-23 22:56:38,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38" (1/1) ... [2019-11-23 22:56:38,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38" (1/1) ... [2019-11-23 22:56:38,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38" (1/1) ... [2019-11-23 22:56:38,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38" (1/1) ... [2019-11-23 22:56:38,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38" (1/1) ... [2019-11-23 22:56:38,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38" (1/1) ... [2019-11-23 22:56:38,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:56:38,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:56:38,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:56:38,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:56:38,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38" (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 22:56:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:56:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:56:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:56:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:56:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 22:56:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:56:38,835 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:56:38,835 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-23 22:56:38,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:56:38 BoogieIcfgContainer [2019-11-23 22:56:38,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:56:38,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:56:38,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:56:38,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:56:38,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:56:37" (1/3) ... [2019-11-23 22:56:38,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecdb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:56:38, skipping insertion in model container [2019-11-23 22:56:38,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:38" (2/3) ... [2019-11-23 22:56:38,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecdb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:56:38, skipping insertion in model container [2019-11-23 22:56:38,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:56:38" (3/3) ... [2019-11-23 22:56:38,850 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum5.c [2019-11-23 22:56:38,861 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:56:38,871 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:56:38,883 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:56:38,905 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:56:38,905 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:56:38,905 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:56:38,905 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:56:38,906 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:56:38,906 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:56:38,906 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:56:38,906 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:56:38,919 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-23 22:56:38,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-23 22:56:38,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:56:38,927 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:56:38,928 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:56:38,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:56:38,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1224878275, now seen corresponding path program 1 times [2019-11-23 22:56:38,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:56:38,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825403726] [2019-11-23 22:56:38,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:56:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:56:39,135 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 22:56:39,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825403726] [2019-11-23 22:56:39,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:56:39,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:56:39,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678255920] [2019-11-23 22:56:39,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:56:39,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:56:39,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:56:39,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:56:39,163 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-11-23 22:56:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:56:39,262 INFO L93 Difference]: Finished difference Result 40 states and 60 transitions. [2019-11-23 22:56:39,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:56:39,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-23 22:56:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:56:39,274 INFO L225 Difference]: With dead ends: 40 [2019-11-23 22:56:39,274 INFO L226 Difference]: Without dead ends: 26 [2019-11-23 22:56:39,277 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:56:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-23 22:56:39,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-23 22:56:39,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-23 22:56:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 45 transitions. [2019-11-23 22:56:39,313 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 45 transitions. Word has length 15 [2019-11-23 22:56:39,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:56:39,313 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 45 transitions. [2019-11-23 22:56:39,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:56:39,314 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 45 transitions. [2019-11-23 22:56:39,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-23 22:56:39,315 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:56:39,315 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:56:39,315 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:56:39,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:56:39,316 INFO L82 PathProgramCache]: Analyzing trace with hash -325491188, now seen corresponding path program 1 times [2019-11-23 22:56:39,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:56:39,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86731666] [2019-11-23 22:56:39,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:56:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:56:39,404 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 22:56:39,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86731666] [2019-11-23 22:56:39,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:56:39,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:56:39,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122397343] [2019-11-23 22:56:39,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:56:39,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:56:39,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:56:39,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:56:39,409 INFO L87 Difference]: Start difference. First operand 26 states and 45 transitions. Second operand 3 states. [2019-11-23 22:56:39,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:56:39,479 INFO L93 Difference]: Finished difference Result 50 states and 88 transitions. [2019-11-23 22:56:39,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:56:39,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-23 22:56:39,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:56:39,480 INFO L225 Difference]: With dead ends: 50 [2019-11-23 22:56:39,481 INFO L226 Difference]: Without dead ends: 27 [2019-11-23 22:56:39,484 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 22:56:39,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-23 22:56:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-23 22:56:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-23 22:56:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2019-11-23 22:56:39,497 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 16 [2019-11-23 22:56:39,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:56:39,498 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2019-11-23 22:56:39,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:56:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2019-11-23 22:56:39,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 22:56:39,500 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:56:39,501 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:56:39,501 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:56:39,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:56:39,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1846658177, now seen corresponding path program 1 times [2019-11-23 22:56:39,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:56:39,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893780880] [2019-11-23 22:56:39,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:56:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:56:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:56:39,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893780880] [2019-11-23 22:56:39,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:56:39,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:56:39,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557967953] [2019-11-23 22:56:39,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:56:39,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:56:39,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:56:39,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:56:39,609 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand 4 states. [2019-11-23 22:56:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:56:39,738 INFO L93 Difference]: Finished difference Result 48 states and 84 transitions. [2019-11-23 22:56:39,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:56:39,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-11-23 22:56:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:56:39,740 INFO L225 Difference]: With dead ends: 48 [2019-11-23 22:56:39,740 INFO L226 Difference]: Without dead ends: 27 [2019-11-23 22:56:39,741 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:56:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-23 22:56:39,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-23 22:56:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-23 22:56:39,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-23 22:56:39,748 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 17 [2019-11-23 22:56:39,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:56:39,749 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-23 22:56:39,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:56:39,749 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-23 22:56:39,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-23 22:56:39,750 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:56:39,750 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:56:39,751 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:56:39,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:56:39,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2028664129, now seen corresponding path program 1 times [2019-11-23 22:56:39,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:56:39,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144738278] [2019-11-23 22:56:39,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:56:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:56:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-23 22:56:39,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144738278] [2019-11-23 22:56:39,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447265053] [2019-11-23 22:56:39,862 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 22:56:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:56:39,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:56:39,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:56:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-23 22:56:39,993 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:56:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-23 22:56:40,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1151598111] [2019-11-23 22:56:40,039 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-23 22:56:40,040 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 22:56:40,049 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 22:56:40,061 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 22:56:40,061 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 22:56:52,425 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 194 [2019-11-23 22:57:15,814 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 261 [2019-11-23 22:57:23,247 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 279 [2019-11-23 22:57:25,169 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 283 [2019-11-23 22:57:27,100 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2019-11-23 22:57:31,031 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 295 [2019-11-23 22:57:35,207 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 302 [2019-11-23 22:57:37,458 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 305 [2019-11-23 22:57:37,584 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2019-11-23 22:57:37,697 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 306 [2019-11-23 22:57:37,825 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2019-11-23 22:57:40,196 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 314 [2019-11-23 22:57:42,566 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 315 [2019-11-23 22:57:42,788 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 316 [2019-11-23 22:57:45,093 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2019-11-23 22:57:45,210 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 320 [2019-11-23 22:57:47,788 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2019-11-23 22:57:47,911 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 322 [2019-11-23 22:57:48,042 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2019-11-23 22:57:48,148 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 325 [2019-11-23 22:57:50,593 WARN L192 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 336 [2019-11-23 22:57:50,959 WARN L192 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 331 [2019-11-23 22:57:53,819 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2019-11-23 22:57:53,942 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 335 [2019-11-23 22:57:56,494 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2019-11-23 22:57:56,619 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 338 [2019-11-23 22:57:59,163 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 346 [2019-11-23 22:57:59,297 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 345 [2019-11-23 22:58:02,220 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2019-11-23 22:58:02,367 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 348 [2019-11-23 22:58:02,507 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2019-11-23 22:58:02,636 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 351 [2019-11-23 22:58:05,360 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2019-11-23 22:58:05,503 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 356 DAG size of output: 355 [2019-11-23 22:58:08,212 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 360 [2019-11-23 22:58:08,361 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 357 [2019-11-23 22:58:08,512 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2019-11-23 22:58:08,676 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 359 [2019-11-23 22:58:08,830 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 362 [2019-11-23 22:58:08,969 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 363