/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-examples/standard_copy6_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:04:37,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:04:37,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:04:37,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:04:37,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:04:37,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:04:37,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:04:37,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:04:37,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:04:37,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:04:37,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:04:37,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:04:37,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:04:37,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:04:37,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:04:37,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:04:37,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:04:37,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:04:37,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:04:37,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:04:37,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:04:37,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:04:37,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:04:37,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:04:37,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:04:37,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 23:04:37,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 23:04:37,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 23:04:37,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 23:04:37,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 23:04:37,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 23:04:37,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 23:04:37,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 23:04:37,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:04:37,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:04:37,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:04:37,896 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 23:04:37,910 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:04:37,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:04:37,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:04:37,912 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:04:37,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:04:37,912 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:04:37,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:04:37,912 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:04:37,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:04:37,913 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:04:37,913 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:04:37,913 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:04:37,914 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:04:37,914 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:04:37,914 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:04:37,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:04:37,915 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:04:37,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:04:37,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:04:37,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:04:37,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:04:37,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:04:37,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:04:37,916 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:04:37,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:04:37,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:04:37,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:04:37,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:04:37,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:04:37,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:04:37,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:04:37,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:04:37,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:04:37,918 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:04:37,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:04:37,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:04:37,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:04:37,919 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:04:38,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:04:38,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:04:38,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:04:38,232 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:04:38,232 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:04:38,233 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i [2019-11-23 23:04:38,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d05fb413/b67275e3c074411ea5b4c7d9128aab45/FLAGaac1a5575 [2019-11-23 23:04:38,800 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:04:38,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i [2019-11-23 23:04:38,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d05fb413/b67275e3c074411ea5b4c7d9128aab45/FLAGaac1a5575 [2019-11-23 23:04:39,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d05fb413/b67275e3c074411ea5b4c7d9128aab45 [2019-11-23 23:04:39,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:04:39,169 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:04:39,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:04:39,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:04:39,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:04:39,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:04:39" (1/1) ... [2019-11-23 23:04:39,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242459c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39, skipping insertion in model container [2019-11-23 23:04:39,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:04:39" (1/1) ... [2019-11-23 23:04:39,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:04:39,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:04:39,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:04:39,404 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:04:39,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:04:39,447 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:04:39,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39 WrapperNode [2019-11-23 23:04:39,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:04:39,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:04:39,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:04:39,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:04:39,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2019-11-23 23:04:39,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2019-11-23 23:04:39,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:04:39,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:04:39,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:04:39,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:04:39,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2019-11-23 23:04:39,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2019-11-23 23:04:39,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2019-11-23 23:04:39,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2019-11-23 23:04:39,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2019-11-23 23:04:39,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2019-11-23 23:04:39,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2019-11-23 23:04:39,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:04:39,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:04:39,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:04:39,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:04:39,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:04:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:04:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:04:39,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:04:39,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:04:39,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:04:39,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:04:40,239 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:04:40,239 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-23 23:04:40,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:04:40 BoogieIcfgContainer [2019-11-23 23:04:40,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:04:40,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:04:40,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:04:40,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:04:40,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:04:39" (1/3) ... [2019-11-23 23:04:40,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8f95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:04:40, skipping insertion in model container [2019-11-23 23:04:40,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (2/3) ... [2019-11-23 23:04:40,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8f95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:04:40, skipping insertion in model container [2019-11-23 23:04:40,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:04:40" (3/3) ... [2019-11-23 23:04:40,254 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-1.i [2019-11-23 23:04:40,264 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:04:40,273 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:04:40,285 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:04:40,314 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:04:40,315 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:04:40,315 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:04:40,315 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:04:40,315 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:04:40,316 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:04:40,316 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:04:40,316 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:04:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-23 23:04:40,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 23:04:40,339 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:04:40,340 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:04:40,340 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:04:40,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:04:40,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1151876283, now seen corresponding path program 1 times [2019-11-23 23:04:40,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:04:40,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008606246] [2019-11-23 23:04:40,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:04:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:04:40,514 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 23:04:40,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008606246] [2019-11-23 23:04:40,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:04:40,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:04:40,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134665513] [2019-11-23 23:04:40,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:04:40,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:04:40,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:04:40,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:04:40,542 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-23 23:04:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:04:40,575 INFO L93 Difference]: Finished difference Result 27 states and 43 transitions. [2019-11-23 23:04:40,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:04:40,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-23 23:04:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:04:40,588 INFO L225 Difference]: With dead ends: 27 [2019-11-23 23:04:40,588 INFO L226 Difference]: Without dead ends: 14 [2019-11-23 23:04:40,591 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 23:04:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-23 23:04:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-23 23:04:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 23:04:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2019-11-23 23:04:40,628 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 21 transitions. Word has length 11 [2019-11-23 23:04:40,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:04:40,628 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 21 transitions. [2019-11-23 23:04:40,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:04:40,629 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 21 transitions. [2019-11-23 23:04:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 23:04:40,629 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:04:40,629 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:04:40,630 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:04:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:04:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash 967437354, now seen corresponding path program 1 times [2019-11-23 23:04:40,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:04:40,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482803420] [2019-11-23 23:04:40,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:04:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:04:40,697 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 23:04:40,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482803420] [2019-11-23 23:04:40,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677273902] [2019-11-23 23:04:40,699 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 23:04:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:04:40,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-23 23:04:40,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:04:40,791 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 23:04:40,791 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:04:40,818 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 23:04:40,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-23 23:04:40,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-23 23:04:40,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116099111] [2019-11-23 23:04:40,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:04:40,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:04:40,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:04:40,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 23:04:40,823 INFO L87 Difference]: Start difference. First operand 14 states and 21 transitions. Second operand 4 states. [2019-11-23 23:04:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:04:40,921 INFO L93 Difference]: Finished difference Result 36 states and 60 transitions. [2019-11-23 23:04:40,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:04:40,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-23 23:04:40,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:04:40,923 INFO L225 Difference]: With dead ends: 36 [2019-11-23 23:04:40,923 INFO L226 Difference]: Without dead ends: 26 [2019-11-23 23:04:40,925 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 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 23:04:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-23 23:04:40,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-23 23:04:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-23 23:04:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-11-23 23:04:40,940 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 12 [2019-11-23 23:04:40,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:04:40,941 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-23 23:04:40,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:04:40,941 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-11-23 23:04:40,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-23 23:04:40,943 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:04:40,944 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:04:41,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:04:41,145 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:04:41,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:04:41,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1707803958, now seen corresponding path program 1 times [2019-11-23 23:04:41,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:04:41,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111456574] [2019-11-23 23:04:41,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:04:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:04:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-23 23:04:41,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111456574] [2019-11-23 23:04:41,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655256684] [2019-11-23 23:04:41,213 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 23:04:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:04:41,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:04:41,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:04:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-23 23:04:41,295 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:04:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-23 23:04:41,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [686661092] [2019-11-23 23:04:41,342 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-23 23:04:41,342 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:04:41,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:04:41,355 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:04:41,355 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:04:42,261 WARN L192 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 113 [2019-11-23 23:04:42,768 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-11-23 23:04:42,984 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-11-23 23:04:43,201 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 201 [2019-11-23 23:04:43,672 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-11-23 23:04:43,921 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 222 [2019-11-23 23:04:44,190 WARN L192 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 222 [2019-11-23 23:04:44,868 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2019-11-23 23:04:45,105 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 243 [2019-11-23 23:04:45,409 WARN L192 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 243 [2019-11-23 23:04:47,184 WARN L192 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2019-11-23 23:04:47,786 WARN L192 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 262 [2019-11-23 23:04:48,404 WARN L192 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 262 [2019-11-23 23:04:49,007 WARN L192 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2019-11-23 23:04:49,526 WARN L192 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 271 [2019-11-23 23:04:51,950 WARN L192 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 288 [2019-11-23 23:04:52,215 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 275 [2019-11-23 23:04:52,444 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 275 [2019-11-23 23:04:54,881 WARN L192 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 290 [2019-11-23 23:04:55,122 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2019-11-23 23:04:55,411 WARN L192 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 278 [2019-11-23 23:04:58,100 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2019-11-23 23:04:58,584 WARN L192 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2019-11-23 23:04:59,121 WARN L192 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 282 [2019-11-23 23:05:01,485 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 296 [2019-11-23 23:05:01,741 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2019-11-23 23:05:01,958 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 286 [2019-11-23 23:05:04,216 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 300 [2019-11-23 23:05:04,452 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2019-11-23 23:05:04,685 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 290 [2019-11-23 23:05:07,052 WARN L192 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 302 [2019-11-23 23:05:07,280 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2019-11-23 23:05:07,497 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 294 [2019-11-23 23:05:09,612 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 305 [2019-11-23 23:05:09,882 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2019-11-23 23:05:10,105 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 297 [2019-11-23 23:05:12,687 WARN L192 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 308 [2019-11-23 23:05:12,955 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2019-11-23 23:05:13,183 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 301 [2019-11-23 23:05:15,558 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2019-11-23 23:05:15,786 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2019-11-23 23:05:16,014 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 303 [2019-11-23 23:05:18,495 WARN L192 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2019-11-23 23:05:18,716 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-11-23 23:05:18,968 WARN L192 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 304 [2019-11-23 23:05:19,226 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2019-11-23 23:05:19,469 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 308 [2019-11-23 23:05:22,346 WARN L192 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 321 [2019-11-23 23:05:22,578 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2019-11-23 23:05:22,807 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 313 [2019-11-23 23:05:25,770 WARN L192 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 325 [2019-11-23 23:05:26,011 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2019-11-23 23:05:26,221 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 318 [2019-11-23 23:05:29,126 WARN L192 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2019-11-23 23:05:29,369 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2019-11-23 23:05:29,608 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 322 [2019-11-23 23:05:32,707 WARN L192 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 330 [2019-11-23 23:05:32,966 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2019-11-23 23:05:33,235 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 320 [2019-11-23 23:05:33,454 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2019-11-23 23:05:33,653 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 318 [2019-11-23 23:05:33,856 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-23 23:05:34,073 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 322 [2019-11-23 23:05:38,084 WARN L192 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 342 [2019-11-23 23:05:38,293 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2019-11-23 23:05:38,501 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 326 [2019-11-23 23:05:42,294 WARN L192 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 345 [2019-11-23 23:05:42,522 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2019-11-23 23:05:42,736 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 330 [2019-11-23 23:05:46,604 WARN L192 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 347 [2019-11-23 23:05:47,051 WARN L192 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2019-11-23 23:05:47,337 WARN L192 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 335 [2019-11-23 23:05:51,427 WARN L192 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 350 [2019-11-23 23:05:51,662 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2019-11-23 23:05:51,889 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 338 [2019-11-23 23:05:56,056 WARN L192 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 356 DAG size of output: 355 [2019-11-23 23:05:56,287 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2019-11-23 23:05:56,536 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 338 [2019-11-23 23:05:56,766 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2019-11-23 23:05:56,993 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 339 [2019-11-23 23:05:57,230 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2019-11-23 23:05:57,441 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-23 23:06:02,175 WARN L192 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 363 [2019-11-23 23:06:02,408 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2019-11-23 23:06:02,630 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 348 [2019-11-23 23:06:07,620 WARN L192 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 368 [2019-11-23 23:06:07,859 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2019-11-23 23:06:08,103 WARN L192 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 353 DAG size of output: 351