/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/list-simple/dll2n_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:08:46,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:08:46,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:08:46,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:08:46,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:08:46,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:08:46,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:08:46,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:08:46,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:08:46,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:08:46,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:08:46,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:08:46,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:08:46,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:08:46,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:08:46,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:08:46,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:08:46,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:08:46,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:08:46,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:08:46,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:08:46,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:08:46,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:08:46,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:08:46,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:08:46,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:08:46,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:08:46,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:08:46,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:08:46,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:08:46,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:08:46,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:08:46,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:08:46,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:08:46,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:08:46,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:08:46,428 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 [2019-11-24 04:08:46,443 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:08:46,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:08:46,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:08:46,444 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:08:46,445 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:08:46,445 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:08:46,445 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:08:46,445 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:08:46,445 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:08:46,445 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:08:46,446 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:08:46,446 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:08:46,446 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:08:46,446 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:08:46,446 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:08:46,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:08:46,447 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:08:46,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:08:46,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:08:46,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:08:46,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:08:46,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:08:46,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:08:46,449 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:08:46,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:08:46,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:08:46,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:08:46,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:08:46,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:08:46,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:08:46,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:08:46,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:08:46,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:08:46,451 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:08:46,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:08:46,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:08:46,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:08:46,451 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:08:46,723 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:08:46,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:08:46,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:08:46,740 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:08:46,741 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:08:46,742 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2019-11-24 04:08:46,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26473561a/5c3ec44cc796461e93f43f88b70815f3/FLAG2a6b60a58 [2019-11-24 04:08:47,325 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:08:47,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2019-11-24 04:08:47,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26473561a/5c3ec44cc796461e93f43f88b70815f3/FLAG2a6b60a58 [2019-11-24 04:08:47,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26473561a/5c3ec44cc796461e93f43f88b70815f3 [2019-11-24 04:08:47,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:08:47,670 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:08:47,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:08:47,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:08:47,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:08:47,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:08:47" (1/1) ... [2019-11-24 04:08:47,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e91c767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:47, skipping insertion in model container [2019-11-24 04:08:47,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:08:47" (1/1) ... [2019-11-24 04:08:47,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:08:47,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:08:48,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:08:48,186 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:08:48,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:08:48,323 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:08:48,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48 WrapperNode [2019-11-24 04:08:48,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:08:48,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:08:48,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:08:48,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:08:48,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48" (1/1) ... [2019-11-24 04:08:48,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48" (1/1) ... [2019-11-24 04:08:48,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:08:48,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:08:48,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:08:48,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:08:48,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48" (1/1) ... [2019-11-24 04:08:48,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48" (1/1) ... [2019-11-24 04:08:48,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48" (1/1) ... [2019-11-24 04:08:48,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48" (1/1) ... [2019-11-24 04:08:48,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48" (1/1) ... [2019-11-24 04:08:48,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48" (1/1) ... [2019-11-24 04:08:48,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48" (1/1) ... [2019-11-24 04:08:48,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:08:48,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:08:48,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:08:48,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:08:48,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48" (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 [2019-11-24 04:08:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 04:08:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 04:08:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 04:08:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:08:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 04:08:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 04:08:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:08:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 04:08:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:08:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:08:49,246 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:08:49,246 INFO L284 CfgBuilder]: Removed 19 assume(true) statements. [2019-11-24 04:08:49,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:08:49 BoogieIcfgContainer [2019-11-24 04:08:49,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:08:49,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:08:49,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:08:49,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:08:49,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:08:47" (1/3) ... [2019-11-24 04:08:49,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715dc6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:08:49, skipping insertion in model container [2019-11-24 04:08:49,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:08:48" (2/3) ... [2019-11-24 04:08:49,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715dc6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:08:49, skipping insertion in model container [2019-11-24 04:08:49,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:08:49" (3/3) ... [2019-11-24 04:08:49,256 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2019-11-24 04:08:49,264 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:08:49,271 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:08:49,279 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:08:49,309 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:08:49,310 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:08:49,310 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:08:49,310 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:08:49,310 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:08:49,310 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:08:49,311 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:08:49,311 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:08:49,328 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-24 04:08:49,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 04:08:49,336 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:08:49,337 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 04:08:49,338 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:08:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:08:49,344 INFO L82 PathProgramCache]: Analyzing trace with hash 124340752, now seen corresponding path program 1 times [2019-11-24 04:08:49,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:08:49,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082451760] [2019-11-24 04:08:49,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:08:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:08:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:08:49,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082451760] [2019-11-24 04:08:49,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:08:49,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:08:49,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441058148] [2019-11-24 04:08:49,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:08:49,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:08:49,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:08:49,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:08:49,546 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-24 04:08:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:08:49,597 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2019-11-24 04:08:49,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:08:49,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-24 04:08:49,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:08:49,610 INFO L225 Difference]: With dead ends: 29 [2019-11-24 04:08:49,610 INFO L226 Difference]: Without dead ends: 12 [2019-11-24 04:08:49,613 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 [2019-11-24 04:08:49,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-24 04:08:49,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-11-24 04:08:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-24 04:08:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-11-24 04:08:49,653 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 5 [2019-11-24 04:08:49,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:08:49,653 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-24 04:08:49,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:08:49,654 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2019-11-24 04:08:49,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:08:49,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:08:49,655 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:08:49,655 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:08:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:08:49,655 INFO L82 PathProgramCache]: Analyzing trace with hash 720579733, now seen corresponding path program 1 times [2019-11-24 04:08:49,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:08:49,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555289125] [2019-11-24 04:08:49,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:08:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:08:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:08:49,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555289125] [2019-11-24 04:08:49,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854164434] [2019-11-24 04:08:49,747 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 [2019-11-24 04:08:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:08:49,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-24 04:08:49,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:08:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:08:49,890 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:08:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:08:49,910 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1048182142] [2019-11-24 04:08:49,938 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-24 04:08:49,939 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:08:49,964 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:08:49,978 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:08:49,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:08:50,313 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:08:50,794 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:08:51,447 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:08:51,962 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:08:52,102 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:08:52,582 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:08:53,228 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:08:53,244 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:08:54,094 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-11-24 04:08:55,056 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 436 [2019-11-24 04:08:55,282 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-11-24 04:08:56,507 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 449 [2019-11-24 04:08:56,721 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-11-24 04:08:56,916 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 448 [2019-11-24 04:08:57,444 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-11-24 04:08:57,505 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:09:16,374 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:09:16,403 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:09:16,518 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-24 04:09:16,562 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:09:16,600 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:09:17,163 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 13 [2019-11-24 04:09:18,212 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 13 [2019-11-24 04:09:20,618 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 13 [2019-11-24 04:09:21,489 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:09:21,691 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-11-24 04:09:22,699 WARN L192 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 101 [2019-11-24 04:09:23,318 WARN L192 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 94 [2019-11-24 04:09:24,078 WARN L192 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 136 [2019-11-24 04:09:24,084 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:09:24,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 04:09:24,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2019-11-24 04:09:24,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117834124] [2019-11-24 04:09:24,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:09:24,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:09:24,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:09:24,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-24 04:09:24,088 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand 5 states. [2019-11-24 04:09:24,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:09:24,175 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2019-11-24 04:09:24,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:09:24,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 04:09:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:09:24,176 INFO L225 Difference]: With dead ends: 20 [2019-11-24 04:09:24,176 INFO L226 Difference]: Without dead ends: 13 [2019-11-24 04:09:24,177 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-24 04:09:24,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-24 04:09:24,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-24 04:09:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-24 04:09:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-11-24 04:09:24,180 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2019-11-24 04:09:24,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:09:24,180 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-24 04:09:24,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:09:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2019-11-24 04:09:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:09:24,181 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:09:24,181 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-24 04:09:24,383 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:09:24,384 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:09:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:09:24,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1819377190, now seen corresponding path program 2 times [2019-11-24 04:09:24,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:09:24,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618771768] [2019-11-24 04:09:24,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:09:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:09:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 04:09:24,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618771768] [2019-11-24 04:09:24,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:09:24,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 04:09:24,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107780647] [2019-11-24 04:09:24,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-24 04:09:24,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:09:24,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-24 04:09:24,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-24 04:09:24,616 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 7 states. [2019-11-24 04:09:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:09:24,785 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-24 04:09:24,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 04:09:24,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-24 04:09:24,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:09:24,786 INFO L225 Difference]: With dead ends: 15 [2019-11-24 04:09:24,786 INFO L226 Difference]: Without dead ends: 13 [2019-11-24 04:09:24,787 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-24 04:09:24,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-24 04:09:24,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-24 04:09:24,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-24 04:09:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-24 04:09:24,791 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-11-24 04:09:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:09:24,791 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-24 04:09:24,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-24 04:09:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-24 04:09:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 04:09:24,792 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:09:24,792 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:09:24,793 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:09:24,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:09:24,793 INFO L82 PathProgramCache]: Analyzing trace with hash -369755243, now seen corresponding path program 1 times [2019-11-24 04:09:24,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:09:24,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084511103] [2019-11-24 04:09:24,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:09:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:09:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:09:25,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084511103] [2019-11-24 04:09:25,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101981636] [2019-11-24 04:09:25,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:09:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:09:25,258 WARN L253 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 82 conjunts are in the unsatisfiable core [2019-11-24 04:09:25,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:09:26,130 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2019-11-24 04:09:26,302 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2019-11-24 04:09:26,350 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:09:30,718 WARN L192 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 133 DAG size of output: 128 [2019-11-24 04:09:32,183 WARN L192 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 127 [2019-11-24 04:09:33,304 WARN L192 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 126 [2019-11-24 04:09:34,271 WARN L192 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-24 04:09:34,708 WARN L192 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-11-24 04:09:35,040 WARN L192 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-11-24 04:09:35,325 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-24 04:09:35,516 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-11-24 04:09:35,670 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2019-11-24 04:09:35,818 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-11-24 04:09:35,953 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2019-11-24 04:09:36,116 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-11-24 04:09:36,573 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-11-24 04:09:46,781 WARN L192 SmtUtils]: Spent 9.54 s on a formula simplification. DAG size of input: 260 DAG size of output: 144 [2019-11-24 04:09:47,812 WARN L192 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 140 [2019-11-24 04:09:48,869 WARN L192 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 137 [2019-11-24 04:09:49,474 WARN L192 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-11-24 04:09:50,577 WARN L192 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 130 [2019-11-24 04:09:51,103 WARN L192 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-24 04:09:51,561 WARN L192 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-11-24 04:09:52,315 WARN L192 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 110 [2019-11-24 04:09:52,891 WARN L192 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 115 [2019-11-24 04:09:53,495 WARN L192 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 104 [2019-11-24 04:09:54,904 WARN L192 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 139 DAG size of output: 110 [2019-11-24 04:09:55,861 WARN L192 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 643 DAG size of output: 312 [2019-11-24 04:09:56,065 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-11-24 04:09:56,383 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-11-24 04:09:56,572 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-11-24 04:09:57,012 WARN L192 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2019-11-24 04:09:57,357 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2019-11-24 04:09:58,314 WARN L192 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 202 [2019-11-24 04:09:58,709 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-11-24 04:09:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:09:58,793 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:10:14,050 WARN L192 SmtUtils]: Spent 14.69 s on a formula simplification that was a NOOP. DAG size: 210