java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:02:41,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:02:41,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:02:41,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:02:41,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:02:41,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:02:41,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:02:41,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:02:41,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:02:41,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:02:41,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:02:41,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:02:41,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:02:41,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:02:41,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:02:41,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:02:41,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:02:41,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:02:41,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:02:41,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:02:41,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:02:41,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:02:41,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:02:41,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:02:41,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:02:41,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:02:41,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:02:41,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:02:41,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:02:41,420 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:02:41,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:02:41,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:02:41,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:02:41,422 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:02:41,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:02:41,423 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:02:41,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:02:41,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:02:41,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:02:41,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:02:41,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:02:41,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:02:41,424 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:02:41,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:02:41,424 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:02:41,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:02:41,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:02:41,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:02:41,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:02:41,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:02:41,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:02:41,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:02:41,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:02:41,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:02:41,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:02:41,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:02:41,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:02:41,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:02:41,754 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:02:41,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:02:41,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:02:41,772 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:02:41,773 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:02:41,774 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2019-10-15 03:02:41,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d5e12e47/2344c7fa4ae847fdb5da9fffd70a7a06/FLAGc1d8e87bd [2019-10-15 03:02:42,333 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:02:42,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i [2019-10-15 03:02:42,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d5e12e47/2344c7fa4ae847fdb5da9fffd70a7a06/FLAGc1d8e87bd [2019-10-15 03:02:42,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d5e12e47/2344c7fa4ae847fdb5da9fffd70a7a06 [2019-10-15 03:02:42,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:02:42,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:02:42,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:42,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:02:42,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:02:42,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:42" (1/1) ... [2019-10-15 03:02:42,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a84088d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:42, skipping insertion in model container [2019-10-15 03:02:42,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:42" (1/1) ... [2019-10-15 03:02:42,743 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:02:42,764 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:02:42,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:42,954 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:02:42,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:43,007 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:02:43,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:43 WrapperNode [2019-10-15 03:02:43,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:43,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:02:43,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:02:43,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:02:43,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:43" (1/1) ... [2019-10-15 03:02:43,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:43" (1/1) ... [2019-10-15 03:02:43,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:43" (1/1) ... [2019-10-15 03:02:43,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:43" (1/1) ... [2019-10-15 03:02:43,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:43" (1/1) ... [2019-10-15 03:02:43,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:43" (1/1) ... [2019-10-15 03:02:43,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:43" (1/1) ... [2019-10-15 03:02:43,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:02:43,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:02:43,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:02:43,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:02:43,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:43" (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 [2019-10-15 03:02:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:02:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:02:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:02:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:02:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:02:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:02:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:02:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:02:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:02:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:02:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:02:43,509 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:02:43,510 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:02:43,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:43 BoogieIcfgContainer [2019-10-15 03:02:43,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:02:43,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:02:43,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:02:43,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:02:43,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:02:42" (1/3) ... [2019-10-15 03:02:43,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45527479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:43, skipping insertion in model container [2019-10-15 03:02:43,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:43" (2/3) ... [2019-10-15 03:02:43,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45527479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:43, skipping insertion in model container [2019-10-15 03:02:43,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:43" (3/3) ... [2019-10-15 03:02:43,524 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2019-10-15 03:02:43,536 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:02:43,545 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:02:43,560 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:02:43,598 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:02:43,598 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:02:43,599 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:02:43,599 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:02:43,599 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:02:43,600 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:02:43,600 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:02:43,600 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:02:43,627 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-15 03:02:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 03:02:43,636 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:43,638 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:43,640 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:43,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:43,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1885241407, now seen corresponding path program 1 times [2019-10-15 03:02:43,659 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:43,659 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316245713] [2019-10-15 03:02:43,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:43,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:43,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:43,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316245713] [2019-10-15 03:02:43,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:02:43,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:02:43,805 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59814479] [2019-10-15 03:02:43,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:02:43,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:43,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:02:43,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:02:43,829 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-15 03:02:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:43,856 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-15 03:02:43,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:02:43,858 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-10-15 03:02:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:43,868 INFO L225 Difference]: With dead ends: 31 [2019-10-15 03:02:43,868 INFO L226 Difference]: Without dead ends: 13 [2019-10-15 03:02:43,872 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:02:43,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-15 03:02:43,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-15 03:02:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-15 03:02:43,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-15 03:02:43,915 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-10-15 03:02:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:43,915 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-15 03:02:43,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:02:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-15 03:02:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-15 03:02:43,917 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:43,917 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:43,917 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:43,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1681236347, now seen corresponding path program 1 times [2019-10-15 03:02:43,918 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:43,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019463814] [2019-10-15 03:02:43,919 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:43,919 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:43,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:44,219 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 16 [2019-10-15 03:02:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:44,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019463814] [2019-10-15 03:02:44,246 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:02:44,246 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:02:44,246 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790331237] [2019-10-15 03:02:44,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:02:44,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:44,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:02:44,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:02:44,249 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-10-15 03:02:44,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:44,298 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-10-15 03:02:44,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:02:44,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-10-15 03:02:44,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:44,300 INFO L225 Difference]: With dead ends: 21 [2019-10-15 03:02:44,300 INFO L226 Difference]: Without dead ends: 15 [2019-10-15 03:02:44,301 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:02:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-15 03:02:44,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-15 03:02:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-15 03:02:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-15 03:02:44,307 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2019-10-15 03:02:44,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:44,307 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-15 03:02:44,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:02:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-15 03:02:44,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 03:02:44,308 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:44,309 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:44,309 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:44,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:44,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1288057018, now seen corresponding path program 1 times [2019-10-15 03:02:44,310 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:44,310 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138578209] [2019-10-15 03:02:44,311 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:44,311 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:44,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:44,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138578209] [2019-10-15 03:02:44,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175111508] [2019-10-15 03:02:44,681 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 [2019-10-15 03:02:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:44,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-15 03:02:44,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:02:44,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:02:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:44,997 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:02:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:45,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1209746783] [2019-10-15 03:02:45,199 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-15 03:02:45,199 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:02:45,206 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:02:45,214 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:02:45,215 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:02:45,263 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:02:45,666 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-15 03:02:45,686 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:02:45,689 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:02:45,965 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:02:45,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 21 [2019-10-15 03:02:45,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681302498] [2019-10-15 03:02:45,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-15 03:02:45,969 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:45,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-15 03:02:45,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2019-10-15 03:02:45,972 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 21 states. [2019-10-15 03:02:46,368 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2019-10-15 03:02:46,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:46,859 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-10-15 03:02:46,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 03:02:46,862 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 14 [2019-10-15 03:02:46,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:46,863 INFO L225 Difference]: With dead ends: 27 [2019-10-15 03:02:46,863 INFO L226 Difference]: Without dead ends: 19 [2019-10-15 03:02:46,864 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2019-10-15 03:02:46,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-15 03:02:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-15 03:02:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-15 03:02:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-15 03:02:46,874 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2019-10-15 03:02:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:46,875 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-15 03:02:46,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-15 03:02:46,876 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-15 03:02:46,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 03:02:46,877 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:46,877 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:47,083 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:02:47,088 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:47,089 INFO L82 PathProgramCache]: Analyzing trace with hash -71042716, now seen corresponding path program 2 times [2019-10-15 03:02:47,089 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:47,092 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287442463] [2019-10-15 03:02:47,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:47,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:47,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:47,726 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 29 [2019-10-15 03:02:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:47,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287442463] [2019-10-15 03:02:47,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099202188] [2019-10-15 03:02:47,903 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-10-15 03:02:47,970 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-15 03:02:47,971 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 03:02:47,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 32 conjunts are in the unsatisfiable core [2019-10-15 03:02:47,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:02:48,266 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2019-10-15 03:02:48,421 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2019-10-15 03:02:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:48,689 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:02:53,539 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 28 [2019-10-15 03:02:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:53,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [696324517] [2019-10-15 03:02:53,566 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-15 03:02:53,566 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:02:53,567 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:02:53,567 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:02:53,567 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:02:53,592 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:02:53,748 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-15 03:02:53,771 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:02:53,774 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:02:54,156 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:02:54,156 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 7] total 27 [2019-10-15 03:02:54,157 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473630698] [2019-10-15 03:02:54,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-10-15 03:02:54,158 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:54,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-10-15 03:02:54,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=608, Unknown=1, NotChecked=0, Total=702 [2019-10-15 03:02:54,159 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 27 states. [2019-10-15 03:02:54,491 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2019-10-15 03:02:54,648 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-10-15 03:02:54,867 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2019-10-15 03:02:55,060 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-10-15 03:02:55,923 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2019-10-15 03:02:56,368 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2019-10-15 03:03:06,964 WARN L191 SmtUtils]: Spent 10.19 s on a formula simplification. DAG size of input: 65 DAG size of output: 34 [2019-10-15 03:03:07,110 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 31 [2019-10-15 03:03:32,545 WARN L191 SmtUtils]: Spent 22.02 s on a formula simplification. DAG size of input: 69 DAG size of output: 40