/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/array-examples/sorting_bubblesort_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:01:23,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:01:23,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:01:23,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:01:23,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:01:23,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:01:23,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:01:23,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:01:23,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:01:23,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:01:23,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:01:23,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:01:23,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:01:23,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:01:23,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:01:23,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:01:23,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:01:23,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:01:23,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:01:23,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:01:23,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:01:23,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:01:23,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:01:23,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:01:23,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 23:01:23,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 23:01:23,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 23:01:23,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 23:01:23,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 23:01:23,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 23:01:23,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 23:01:23,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 23:01:23,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 23:01:23,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 23:01:23,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 23:01:23,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 23:01:23,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 23:01:23,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 23:01:23,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:01:23,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:01:23,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:01:23,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-23 23:01:23,153 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:01:23,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:01:23,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:01:23,154 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:01:23,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:01:23,155 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:01:23,155 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:01:23,155 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:01:23,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:01:23,155 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:01:23,156 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:01:23,156 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:01:23,156 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:01:23,156 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:01:23,156 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:01:23,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:01:23,157 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:01:23,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:01:23,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:01:23,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:01:23,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:01:23,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:01:23,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:01:23,160 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:01:23,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:01:23,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:01:23,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:01:23,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:01:23,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:01:23,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:01:23,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:01:23,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:01:23,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:01:23,161 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:01:23,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:01:23,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:01:23,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:01:23,165 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:01:23,417 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:01:23,436 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:01:23,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:01:23,442 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:01:23,442 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:01:23,443 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_bubblesort_ground-2.i [2019-11-23 23:01:23,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a29aa1c85/e07d009de76f4334bb89f25207a34f74/FLAG388182612 [2019-11-23 23:01:23,977 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:01:23,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_bubblesort_ground-2.i [2019-11-23 23:01:23,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a29aa1c85/e07d009de76f4334bb89f25207a34f74/FLAG388182612 [2019-11-23 23:01:24,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a29aa1c85/e07d009de76f4334bb89f25207a34f74 [2019-11-23 23:01:24,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:01:24,364 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:01:24,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:01:24,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:01:24,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:01:24,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:01:24" (1/1) ... [2019-11-23 23:01:24,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47757ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24, skipping insertion in model container [2019-11-23 23:01:24,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:01:24" (1/1) ... [2019-11-23 23:01:24,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:01:24,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:01:24,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:01:24,632 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:01:24,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:01:24,675 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:01:24,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24 WrapperNode [2019-11-23 23:01:24,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:01:24,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:01:24,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:01:24,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:01:24,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24" (1/1) ... [2019-11-23 23:01:24,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24" (1/1) ... [2019-11-23 23:01:24,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:01:24,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:01:24,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:01:24,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:01:24,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24" (1/1) ... [2019-11-23 23:01:24,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24" (1/1) ... [2019-11-23 23:01:24,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24" (1/1) ... [2019-11-23 23:01:24,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24" (1/1) ... [2019-11-23 23:01:24,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24" (1/1) ... [2019-11-23 23:01:24,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24" (1/1) ... [2019-11-23 23:01:24,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24" (1/1) ... [2019-11-23 23:01:24,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:01:24,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:01:24,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:01:24,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:01:24,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:01:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:01:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:01:24,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:01:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:01:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:01:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:01:25,344 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:01:25,344 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-23 23:01:25,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:01:25 BoogieIcfgContainer [2019-11-23 23:01:25,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:01:25,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:01:25,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:01:25,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:01:25,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:01:24" (1/3) ... [2019-11-23 23:01:25,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0706d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:01:25, skipping insertion in model container [2019-11-23 23:01:25,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:01:24" (2/3) ... [2019-11-23 23:01:25,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0706d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:01:25, skipping insertion in model container [2019-11-23 23:01:25,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:01:25" (3/3) ... [2019-11-23 23:01:25,354 INFO L109 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_ground-2.i [2019-11-23 23:01:25,362 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:01:25,370 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:01:25,383 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:01:25,406 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:01:25,407 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:01:25,407 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:01:25,407 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:01:25,407 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:01:25,407 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:01:25,407 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:01:25,407 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:01:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-23 23:01:25,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 23:01:25,425 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:01:25,426 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:01:25,426 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:01:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:01:25,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1113561416, now seen corresponding path program 1 times [2019-11-23 23:01:25,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:01:25,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402225093] [2019-11-23 23:01:25,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:01:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:01:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:01:25,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402225093] [2019-11-23 23:01:25,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:01:25,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:01:25,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238986300] [2019-11-23 23:01:25,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:01:25,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:01:25,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:01:25,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:01:25,613 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-23 23:01:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:01:25,644 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-11-23 23:01:25,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:01:25,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-23 23:01:25,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:01:25,659 INFO L225 Difference]: With dead ends: 21 [2019-11-23 23:01:25,659 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 23:01:25,663 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:01:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 23:01:25,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-23 23:01:25,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-23 23:01:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2019-11-23 23:01:25,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 7 [2019-11-23 23:01:25,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:01:25,707 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-11-23 23:01:25,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:01:25,708 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2019-11-23 23:01:25,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:01:25,709 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:01:25,709 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:01:25,710 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:01:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:01:25,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1494254419, now seen corresponding path program 1 times [2019-11-23 23:01:25,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:01:25,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496741588] [2019-11-23 23:01:25,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:01:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:01:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:01:25,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496741588] [2019-11-23 23:01:25,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:01:25,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:01:25,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468097735] [2019-11-23 23:01:25,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:01:25,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:01:25,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:01:25,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:01:25,815 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand 3 states. [2019-11-23 23:01:25,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:01:25,840 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2019-11-23 23:01:25,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:01:25,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-23 23:01:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:01:25,843 INFO L225 Difference]: With dead ends: 18 [2019-11-23 23:01:25,843 INFO L226 Difference]: Without dead ends: 12 [2019-11-23 23:01:25,844 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:01:25,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-23 23:01:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-23 23:01:25,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-23 23:01:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-23 23:01:25,852 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 8 [2019-11-23 23:01:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:01:25,853 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-23 23:01:25,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:01:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2019-11-23 23:01:25,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 23:01:25,855 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:01:25,855 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:01:25,855 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:01:25,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:01:25,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1161994799, now seen corresponding path program 1 times [2019-11-23 23:01:25,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:01:25,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309057730] [2019-11-23 23:01:25,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:01:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:01:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:01:25,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309057730] [2019-11-23 23:01:25,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:01:25,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:01:25,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470350087] [2019-11-23 23:01:25,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:01:25,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:01:25,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:01:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:01:25,903 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 3 states. [2019-11-23 23:01:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:01:25,916 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2019-11-23 23:01:25,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:01:25,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-23 23:01:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:01:25,918 INFO L225 Difference]: With dead ends: 21 [2019-11-23 23:01:25,918 INFO L226 Difference]: Without dead ends: 13 [2019-11-23 23:01:25,918 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:01:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-23 23:01:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-23 23:01:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-23 23:01:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2019-11-23 23:01:25,923 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 10 [2019-11-23 23:01:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:01:25,923 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-11-23 23:01:25,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:01:25,924 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2019-11-23 23:01:25,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 23:01:25,924 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:01:25,925 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:01:25,925 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:01:25,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:01:25,926 INFO L82 PathProgramCache]: Analyzing trace with hash 788866081, now seen corresponding path program 1 times [2019-11-23 23:01:25,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:01:25,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63739872] [2019-11-23 23:01:25,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:01:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:01:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:01:25,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63739872] [2019-11-23 23:01:25,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945869599] [2019-11-23 23:01:25,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:01:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:01:26,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:01:26,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:01:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 23:01:26,099 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:01:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 23:01:26,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1096178633] [2019-11-23 23:01:26,181 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-23 23:01:26,181 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:01:26,195 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:01:26,202 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:01:26,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:01:34,595 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2019-11-23 23:01:34,761 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 171 [2019-11-23 23:01:34,986 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2019-11-23 23:01:59,176 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 268 [2019-11-23 23:02:09,200 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 296 [2019-11-23 23:02:12,107 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 306 [2019-11-23 23:02:14,631 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 314 [2019-11-23 23:02:17,122 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 317 [2019-11-23 23:02:19,552 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 322 [2019-11-23 23:02:21,893 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2019-11-23 23:02:22,009 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 326 [2019-11-23 23:02:24,599 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2019-11-23 23:02:24,736 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 328 [2019-11-23 23:02:27,126 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 333 [2019-11-23 23:02:27,236 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 331 [2019-11-23 23:02:29,864 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2019-11-23 23:02:29,988 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 334 [2019-11-23 23:02:32,308 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 338 [2019-11-23 23:02:32,429 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 337 [2019-11-23 23:02:35,168 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 343 [2019-11-23 23:02:35,292 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 342 [2019-11-23 23:02:37,686 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 347 [2019-11-23 23:02:37,818 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 343 [2019-11-23 23:02:37,944 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-23 23:02:38,063 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 343 [2019-11-23 23:02:38,189 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2019-11-23 23:02:38,307 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 347 [2019-11-23 23:02:41,326 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2019-11-23 23:02:41,445 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 351 [2019-11-23 23:02:44,066 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 356 [2019-11-23 23:02:44,203 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 354 [2019-11-23 23:02:46,955 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 361 [2019-11-23 23:02:47,086 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 358 [2019-11-23 23:02:49,932 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 362 [2019-11-23 23:02:50,067 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 362 [2019-11-23 23:02:52,856 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-11-23 23:02:53,000 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 363 [2019-11-23 23:02:53,141 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2019-11-23 23:02:53,283 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 365 [2019-11-23 23:02:56,096 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 372 [2019-11-23 23:02:56,252 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 370