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/eca-rers2012/Problem02_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:42:41,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:42:41,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:42:41,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 01:42:41,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:42:41,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:42:41,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:42:41,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:42:41,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:42:41,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:42:41,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:42:41,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:42:41,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:42:41,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:42:41,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:42:41,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:42:41,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:42:41,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:42:41,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:42:41,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:42:41,942 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 01:42:41,956 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:42:41,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:42:41,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:42:41,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:42:41,958 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:42:41,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:42:41,958 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:42:41,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:42:41,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:42:41,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:42:41,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:42:41,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:42:41,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:42:41,959 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:42:41,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:42:41,960 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:42:41,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:42:41,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:42:41,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:42:41,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:42:41,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:42:41,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:42:41,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:42:41,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:42:41,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:42:41,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:42:41,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:42:41,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:42:41,962 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 01:42:42,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:42:42,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:42:42,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:42:42,250 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:42:42,250 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:42:42,251 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2019-10-15 01:42:42,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac649695f/9c8e2e8312674f23ba99038f9870b0a1/FLAGef8e83758 [2019-10-15 01:42:42,904 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:42:42,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2019-10-15 01:42:42,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac649695f/9c8e2e8312674f23ba99038f9870b0a1/FLAGef8e83758 [2019-10-15 01:42:43,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac649695f/9c8e2e8312674f23ba99038f9870b0a1 [2019-10-15 01:42:43,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:42:43,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:42:43,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:42:43,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:42:43,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:42:43,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:42:43" (1/1) ... [2019-10-15 01:42:43,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@364da557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:43, skipping insertion in model container [2019-10-15 01:42:43,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:42:43" (1/1) ... [2019-10-15 01:42:43,138 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:42:43,197 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:42:43,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:42:43,599 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:42:43,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:42:43,831 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:42:43,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:43 WrapperNode [2019-10-15 01:42:43,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:42:43,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:42:43,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:42:43,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:42:43,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:43" (1/1) ... [2019-10-15 01:42:43,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:43" (1/1) ... [2019-10-15 01:42:43,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:43" (1/1) ... [2019-10-15 01:42:43,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:43" (1/1) ... [2019-10-15 01:42:43,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:43" (1/1) ... [2019-10-15 01:42:43,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:43" (1/1) ... [2019-10-15 01:42:43,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:43" (1/1) ... [2019-10-15 01:42:43,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:42:43,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:42:43,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:42:43,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:42:43,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:43" (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 01:42:43,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:42:43,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:42:43,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:42:43,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:42:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:42:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:42:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:42:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:42:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:42:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:42:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:42:46,125 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:42:46,128 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:42:46,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:42:46 BoogieIcfgContainer [2019-10-15 01:42:46,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:42:46,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:42:46,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:42:46,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:42:46,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:42:43" (1/3) ... [2019-10-15 01:42:46,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767e5353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:42:46, skipping insertion in model container [2019-10-15 01:42:46,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:43" (2/3) ... [2019-10-15 01:42:46,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767e5353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:42:46, skipping insertion in model container [2019-10-15 01:42:46,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:42:46" (3/3) ... [2019-10-15 01:42:46,150 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2019-10-15 01:42:46,161 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:42:46,173 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:42:46,187 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:42:46,219 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:42:46,220 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:42:46,220 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:42:46,220 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:42:46,220 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:42:46,221 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:42:46,221 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:42:46,221 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:42:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-15 01:42:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-15 01:42:46,268 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:42:46,270 INFO L380 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:42:46,272 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:42:46,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:42:46,279 INFO L82 PathProgramCache]: Analyzing trace with hash -219356105, now seen corresponding path program 1 times [2019-10-15 01:42:46,286 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:42:46,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753636701] [2019-10-15 01:42:46,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:42:46,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:42:46,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:42:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:42:46,761 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 01:42:46,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753636701] [2019-10-15 01:42:46,763 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:42:46,764 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:42:46,766 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862200203] [2019-10-15 01:42:46,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:42:46,776 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:42:46,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:42:46,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:42:46,794 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2019-10-15 01:42:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:42:47,406 INFO L93 Difference]: Finished difference Result 273 states and 508 transitions. [2019-10-15 01:42:47,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:42:47,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-10-15 01:42:47,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:42:47,428 INFO L225 Difference]: With dead ends: 273 [2019-10-15 01:42:47,428 INFO L226 Difference]: Without dead ends: 175 [2019-10-15 01:42:47,434 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:42:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-15 01:42:47,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-10-15 01:42:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-15 01:42:47,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 312 transitions. [2019-10-15 01:42:47,542 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 312 transitions. Word has length 86 [2019-10-15 01:42:47,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:42:47,544 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 312 transitions. [2019-10-15 01:42:47,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:42:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 312 transitions. [2019-10-15 01:42:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:42:47,559 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:42:47,560 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:42:47,560 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:42:47,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:42:47,562 INFO L82 PathProgramCache]: Analyzing trace with hash -701890884, now seen corresponding path program 1 times [2019-10-15 01:42:47,562 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:42:47,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804352] [2019-10-15 01:42:47,563 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:42:47,563 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:42:47,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:42:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:42:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:42:47,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804352] [2019-10-15 01:42:47,799 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:42:47,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:42:47,800 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201415943] [2019-10-15 01:42:47,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:42:47,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:42:47,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:42:47,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:42:47,802 INFO L87 Difference]: Start difference. First operand 175 states and 312 transitions. Second operand 3 states. [2019-10-15 01:42:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:42:48,191 INFO L93 Difference]: Finished difference Result 513 states and 937 transitions. [2019-10-15 01:42:48,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:42:48,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-15 01:42:48,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:42:48,196 INFO L225 Difference]: With dead ends: 513 [2019-10-15 01:42:48,196 INFO L226 Difference]: Without dead ends: 343 [2019-10-15 01:42:48,201 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:42:48,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2019-10-15 01:42:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2019-10-15 01:42:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-15 01:42:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 580 transitions. [2019-10-15 01:42:48,228 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 580 transitions. Word has length 94 [2019-10-15 01:42:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:42:48,229 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 580 transitions. [2019-10-15 01:42:48,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:42:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 580 transitions. [2019-10-15 01:42:48,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 01:42:48,231 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:42:48,231 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1] [2019-10-15 01:42:48,232 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:42:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:42:48,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1247425288, now seen corresponding path program 1 times [2019-10-15 01:42:48,233 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:42:48,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146612361] [2019-10-15 01:42:48,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:42:48,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:42:48,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:42:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:42:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:42:48,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146612361] [2019-10-15 01:42:48,437 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:42:48,437 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:42:48,438 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253963075] [2019-10-15 01:42:48,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:42:48,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:42:48,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:42:48,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:42:48,439 INFO L87 Difference]: Start difference. First operand 343 states and 580 transitions. Second operand 4 states. [2019-10-15 01:42:49,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:42:49,175 INFO L93 Difference]: Finished difference Result 1269 states and 2248 transitions. [2019-10-15 01:42:49,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:42:49,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2019-10-15 01:42:49,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:42:49,188 INFO L225 Difference]: With dead ends: 1269 [2019-10-15 01:42:49,188 INFO L226 Difference]: Without dead ends: 931 [2019-10-15 01:42:49,190 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:42:49,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2019-10-15 01:42:49,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2019-10-15 01:42:49,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2019-10-15 01:42:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1426 transitions. [2019-10-15 01:42:49,257 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1426 transitions. Word has length 100 [2019-10-15 01:42:49,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:42:49,258 INFO L462 AbstractCegarLoop]: Abstraction has 931 states and 1426 transitions. [2019-10-15 01:42:49,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:42:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1426 transitions. [2019-10-15 01:42:49,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-15 01:42:49,262 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:42:49,263 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:42:49,263 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:42:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:42:49,264 INFO L82 PathProgramCache]: Analyzing trace with hash 483709707, now seen corresponding path program 1 times [2019-10-15 01:42:49,264 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:42:49,264 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489506459] [2019-10-15 01:42:49,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:42:49,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:42:49,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:42:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:42:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 123 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:42:49,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489506459] [2019-10-15 01:42:49,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131910474] [2019-10-15 01:42:49,529 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 01:42:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:42:49,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:42:49,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:42:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:42:49,785 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:42:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:42:49,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [535293508] [2019-10-15 01:42:50,055 INFO L162 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-10-15 01:42:50,056 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:42:50,062 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:42:50,070 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:42:50,071 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:42:50,380 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 89 for LOIs [2019-10-15 01:42:52,855 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 83 for LOIs [2019-10-15 01:42:55,815 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 22 [2019-10-15 01:42:55,907 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 57 [2019-10-15 01:42:56,108 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 57 [2019-10-15 01:42:56,434 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 52 for LOIs [2019-10-15 01:42:56,453 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 01:42:56,711 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2019-10-15 01:42:56,965 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2019-10-15 01:42:57,282 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2019-10-15 01:42:58,088 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 101 [2019-10-15 01:42:58,405 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2019-10-15 01:42:58,698 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2019-10-15 01:42:58,914 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2019-10-15 01:42:59,160 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2019-10-15 01:42:59,402 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2019-10-15 01:42:59,947 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 85 [2019-10-15 01:43:00,328 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2019-10-15 01:43:05,471 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 01:43:05,471 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 12] total 28 [2019-10-15 01:43:05,472 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714220721] [2019-10-15 01:43:05,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-10-15 01:43:05,474 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:05,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-10-15 01:43:05,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:43:05,475 INFO L87 Difference]: Start difference. First operand 931 states and 1426 transitions. Second operand 28 states. [2019-10-15 01:43:05,810 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-10-15 01:43:06,305 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 95 [2019-10-15 01:43:06,943 WARN L191 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 98 [2019-10-15 01:43:07,594 WARN L191 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 95 [2019-10-15 01:43:07,989 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2019-10-15 01:43:08,371 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2019-10-15 01:43:08,564 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-10-15 01:43:08,785 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2019-10-15 01:43:09,087 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2019-10-15 01:43:09,558 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2019-10-15 01:43:10,064 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 94 [2019-10-15 01:43:10,353 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2019-10-15 01:43:10,593 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-15 01:43:10,805 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-10-15 01:43:11,000 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2019-10-15 01:43:11,255 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2019-10-15 01:43:11,612 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-10-15 01:43:11,911 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-10-15 01:43:12,188 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-10-15 01:43:12,450 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2019-10-15 01:43:12,861 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-10-15 01:43:13,110 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2019-10-15 01:43:13,564 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2019-10-15 01:43:13,938 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2019-10-15 01:43:14,190 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2019-10-15 01:43:14,375 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2019-10-15 01:43:14,657 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-15 01:43:15,033 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2019-10-15 01:43:15,217 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2019-10-15 01:43:15,526 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2019-10-15 01:43:18,493 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2019-10-15 01:43:19,013 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2019-10-15 01:43:19,369 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68