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/array-multidimensional/init-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:36:47,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:36:47,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:36:47,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:36:47,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:36:47,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:36:47,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:36:47,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:36:47,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:36:47,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:36:47,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:36:47,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:36:47,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:36:47,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:36:47,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:36:47,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:36:47,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:36:47,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:36:47,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:36:47,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:36:47,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:36:47,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:36:47,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:36:47,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:36:47,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:36:47,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:36:47,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:36:47,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:36:47,144 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 01:36:47,158 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:36:47,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:36:47,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:36:47,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:36:47,160 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:36:47,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:36:47,160 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:36:47,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:36:47,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:36:47,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:36:47,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:36:47,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:36:47,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:36:47,162 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:36:47,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:36:47,162 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:36:47,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:36:47,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:36:47,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:36:47,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:36:47,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:36:47,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:36:47,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:36:47,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:36:47,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:36:47,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:36:47,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:36:47,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:36:47,165 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 01:36:47,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:36:47,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:36:47,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:36:47,522 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:36:47,523 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:36:47,524 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/init-2-n-u.c [2019-10-15 01:36:47,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa6c556f/04cfeccf5278492da16820b867a9130e/FLAG06f4f4094 [2019-10-15 01:36:48,085 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:36:48,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-2-n-u.c [2019-10-15 01:36:48,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa6c556f/04cfeccf5278492da16820b867a9130e/FLAG06f4f4094 [2019-10-15 01:36:48,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa6c556f/04cfeccf5278492da16820b867a9130e [2019-10-15 01:36:48,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:36:48,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:36:48,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:36:48,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:36:48,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:36:48,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:36:48" (1/1) ... [2019-10-15 01:36:48,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@208e5f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:36:48, skipping insertion in model container [2019-10-15 01:36:48,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:36:48" (1/1) ... [2019-10-15 01:36:48,539 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:36:48,557 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:36:48,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:36:48,758 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:36:48,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:36:48,890 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:36:48,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:36:48 WrapperNode [2019-10-15 01:36:48,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:36:48,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:36:48,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:36:48,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:36:48,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:36:48" (1/1) ... [2019-10-15 01:36:48,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:36:48" (1/1) ... [2019-10-15 01:36:48,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:36:48" (1/1) ... [2019-10-15 01:36:48,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:36:48" (1/1) ... [2019-10-15 01:36:48,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:36:48" (1/1) ... [2019-10-15 01:36:48,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:36:48" (1/1) ... [2019-10-15 01:36:48,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:36:48" (1/1) ... [2019-10-15 01:36:48,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:36:48,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:36:48,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:36:48,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:36:48,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:36:48" (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 01:36:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:36:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:36:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:36:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:36:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:36:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:36:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:36:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:36:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:36:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:36:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:36:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:36:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:36:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:36:49,268 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:36:49,268 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:36:49,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:36:49 BoogieIcfgContainer [2019-10-15 01:36:49,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:36:49,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:36:49,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:36:49,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:36:49,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:36:48" (1/3) ... [2019-10-15 01:36:49,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33194704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:36:49, skipping insertion in model container [2019-10-15 01:36:49,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:36:48" (2/3) ... [2019-10-15 01:36:49,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33194704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:36:49, skipping insertion in model container [2019-10-15 01:36:49,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:36:49" (3/3) ... [2019-10-15 01:36:49,280 INFO L109 eAbstractionObserver]: Analyzing ICFG init-2-n-u.c [2019-10-15 01:36:49,300 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:36:49,322 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:36:49,346 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:36:49,375 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:36:49,375 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:36:49,375 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:36:49,375 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:36:49,375 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:36:49,376 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:36:49,376 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:36:49,376 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:36:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-15 01:36:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-15 01:36:49,396 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:36:49,397 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:36:49,399 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:36:49,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:36:49,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1879326802, now seen corresponding path program 1 times [2019-10-15 01:36:49,412 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:36:49,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091822170] [2019-10-15 01:36:49,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:36:49,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:36:49,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:36:49,491 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:36:49,492 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505207910] [2019-10-15 01:36:49,492 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 01:36:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:36:49,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:36:49,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:36:49,640 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 01:36:49,640 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:36:49,674 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 01:36:49,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091822170] [2019-10-15 01:36:49,675 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:36:49,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505207910] [2019-10-15 01:36:49,677 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:36:49,677 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-15 01:36:49,678 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482601893] [2019-10-15 01:36:49,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:36:49,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:36:49,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:36:49,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:36:49,703 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2019-10-15 01:36:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:36:49,797 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2019-10-15 01:36:49,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:36:49,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-15 01:36:49,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:36:49,807 INFO L225 Difference]: With dead ends: 36 [2019-10-15 01:36:49,808 INFO L226 Difference]: Without dead ends: 20 [2019-10-15 01:36:49,811 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 01:36:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-15 01:36:49,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-15 01:36:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-15 01:36:49,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-15 01:36:49,847 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2019-10-15 01:36:49,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:36:49,848 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-15 01:36:49,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:36:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-15 01:36:49,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 01:36:49,849 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:36:49,849 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:36:50,050 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:36:50,056 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:36:50,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:36:50,056 INFO L82 PathProgramCache]: Analyzing trace with hash -347827004, now seen corresponding path program 1 times [2019-10-15 01:36:50,056 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:36:50,057 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084589533] [2019-10-15 01:36:50,057 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:36:50,057 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:36:50,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:36:50,068 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:36:50,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529484639] [2019-10-15 01:36:50,069 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 [2019-10-15 01:36:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:36:50,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:36:50,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:36:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:36:50,140 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:36:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:36:50,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084589533] [2019-10-15 01:36:50,181 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:36:50,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529484639] [2019-10-15 01:36:50,184 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:36:50,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-15 01:36:50,185 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634822373] [2019-10-15 01:36:50,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:36:50,188 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:36:50,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:36:50,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:36:50,190 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 6 states. [2019-10-15 01:36:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:36:50,303 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2019-10-15 01:36:50,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:36:50,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-10-15 01:36:50,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:36:50,309 INFO L225 Difference]: With dead ends: 42 [2019-10-15 01:36:50,310 INFO L226 Difference]: Without dead ends: 29 [2019-10-15 01:36:50,311 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:36:50,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-15 01:36:50,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-10-15 01:36:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-15 01:36:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-10-15 01:36:50,339 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 16 [2019-10-15 01:36:50,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:36:50,340 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-10-15 01:36:50,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:36:50,341 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-10-15 01:36:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-15 01:36:50,343 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:36:50,343 INFO L380 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:36:50,547 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:36:50,547 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:36:50,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:36:50,548 INFO L82 PathProgramCache]: Analyzing trace with hash 671369156, now seen corresponding path program 1 times [2019-10-15 01:36:50,548 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:36:50,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208147130] [2019-10-15 01:36:50,549 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:36:50,549 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:36:50,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:36:50,559 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:36:50,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778980039] [2019-10-15 01:36:50,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:36:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:36:50,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 01:36:50,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:36:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:36:50,680 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:36:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:36:50,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208147130] [2019-10-15 01:36:50,757 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:36:50,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778980039] [2019-10-15 01:36:50,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1310454139] [2019-10-15 01:36:50,809 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-15 01:36:50,810 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:36:50,816 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:36:50,823 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:36:50,823 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:36:51,005 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-15 01:36:51,943 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2019-10-15 01:36:51,955 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 01:36:51,961 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 01:36:52,492 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-10-15 01:36:52,939 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:36:52,939 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 11] total 21 [2019-10-15 01:36:52,940 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552988336] [2019-10-15 01:36:52,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-15 01:36:52,941 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:36:52,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-15 01:36:52,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:36:52,943 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 21 states. [2019-10-15 01:36:53,171 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-10-15 01:36:53,866 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-10-15 01:36:54,100 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2019-10-15 01:36:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:36:54,718 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2019-10-15 01:36:54,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-15 01:36:54,718 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 20 [2019-10-15 01:36:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:36:54,720 INFO L225 Difference]: With dead ends: 77 [2019-10-15 01:36:54,720 INFO L226 Difference]: Without dead ends: 58 [2019-10-15 01:36:54,721 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:36:54,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-15 01:36:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2019-10-15 01:36:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-15 01:36:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2019-10-15 01:36:54,741 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 20 [2019-10-15 01:36:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:36:54,741 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2019-10-15 01:36:54,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-15 01:36:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2019-10-15 01:36:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-15 01:36:54,742 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:36:54,743 INFO L380 BasicCegarLoop]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:36:54,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:36:54,946 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:36:54,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:36:54,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1180073412, now seen corresponding path program 2 times [2019-10-15 01:36:54,947 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:36:54,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084004577] [2019-10-15 01:36:54,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:36:54,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:36:54,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:36:54,967 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:36:54,968 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409796454] [2019-10-15 01:36:54,968 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:36:55,075 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-10-15 01:36:55,075 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:36:55,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 47 conjunts are in the unsatisfiable core [2019-10-15 01:36:55,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:37:04,511 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2019-10-15 01:37:04,661 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-10-15 01:37:10,879 WARN L191 SmtUtils]: Spent 2.47 s on a formula simplification that was a NOOP. DAG size: 63 [2019-10-15 01:37:11,155 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-15 01:37:11,357 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2019-10-15 01:37:27,166 WARN L191 SmtUtils]: Spent 4.50 s on a formula simplification that was a NOOP. DAG size: 73 [2019-10-15 01:37:27,570 WARN L191 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-10-15 01:37:27,799 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74 [2019-10-15 01:37:32,406 WARN L191 SmtUtils]: Spent 4.56 s on a formula simplification that was a NOOP. DAG size: 79 [2019-10-15 01:37:33,211 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 156 [2019-10-15 01:37:33,464 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80