/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/reducercommutativity/avg20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:39:49,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:39:49,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:39:49,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:39:49,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:39:49,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:39:49,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:39:49,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:39:49,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:39:49,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:39:49,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:39:49,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:39:49,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:39:49,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:39:49,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:39:49,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:39:49,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:39:49,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:39:49,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:39:49,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:39:49,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:39:49,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:39:49,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:39:49,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:39:49,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:39:49,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:39:49,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:39:49,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:39:49,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:39:49,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:39:49,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:39:49,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:39:49,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:39:49,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:39:49,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:39:49,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:39:49,355 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 05:39:49,393 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:39:49,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:39:49,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:39:49,394 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:39:49,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:39:49,395 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:39:49,395 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:39:49,395 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:39:49,395 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:39:49,396 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:39:49,398 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:39:49,398 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:39:49,398 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:39:49,398 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:39:49,398 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:39:49,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:39:49,399 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:39:49,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:39:49,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:39:49,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:39:49,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:39:49,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:39:49,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:39:49,402 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:39:49,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:39:49,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:39:49,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:39:49,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:39:49,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:39:49,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:39:49,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:39:49,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:39:49,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:39:49,404 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:39:49,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:39:49,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:39:49,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:39:49,405 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:39:49,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:39:49,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:39:49,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:39:49,699 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:39:49,699 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:39:49,700 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i [2019-11-24 05:39:49,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf91201cb/a40eba870cd040dcadcc0dd0ca8b5877/FLAG3aa09b344 [2019-11-24 05:39:50,196 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:39:50,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/avg20-2.i [2019-11-24 05:39:50,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf91201cb/a40eba870cd040dcadcc0dd0ca8b5877/FLAG3aa09b344 [2019-11-24 05:39:50,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf91201cb/a40eba870cd040dcadcc0dd0ca8b5877 [2019-11-24 05:39:50,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:39:50,582 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:39:50,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:39:50,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:39:50,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:39:50,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:39:50" (1/1) ... [2019-11-24 05:39:50,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f68428b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50, skipping insertion in model container [2019-11-24 05:39:50,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:39:50" (1/1) ... [2019-11-24 05:39:50,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:39:50,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:39:50,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:39:50,797 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:39:50,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:39:50,833 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:39:50,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50 WrapperNode [2019-11-24 05:39:50,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:39:50,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:39:50,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:39:50,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:39:50,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50" (1/1) ... [2019-11-24 05:39:50,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50" (1/1) ... [2019-11-24 05:39:50,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:39:50,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:39:50,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:39:50,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:39:50,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50" (1/1) ... [2019-11-24 05:39:50,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50" (1/1) ... [2019-11-24 05:39:50,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50" (1/1) ... [2019-11-24 05:39:50,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50" (1/1) ... [2019-11-24 05:39:50,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50" (1/1) ... [2019-11-24 05:39:51,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50" (1/1) ... [2019-11-24 05:39:51,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50" (1/1) ... [2019-11-24 05:39:51,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:39:51,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:39:51,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:39:51,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:39:51,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50" (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 05:39:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 05:39:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:39:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:39:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 05:39:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:39:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 05:39:51,553 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:39:51,554 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-24 05:39:51,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:39:51 BoogieIcfgContainer [2019-11-24 05:39:51,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:39:51,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:39:51,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:39:51,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:39:51,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:39:50" (1/3) ... [2019-11-24 05:39:51,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f47079a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:39:51, skipping insertion in model container [2019-11-24 05:39:51,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:50" (2/3) ... [2019-11-24 05:39:51,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f47079a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:39:51, skipping insertion in model container [2019-11-24 05:39:51,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:39:51" (3/3) ... [2019-11-24 05:39:51,565 INFO L109 eAbstractionObserver]: Analyzing ICFG avg20-2.i [2019-11-24 05:39:51,574 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:39:51,582 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 05:39:51,593 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 05:39:51,618 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:39:51,618 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:39:51,618 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:39:51,618 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:39:51,619 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:39:51,619 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:39:51,619 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:39:51,619 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:39:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-24 05:39:51,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:39:51,639 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:51,640 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:51,641 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:51,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:51,645 INFO L82 PathProgramCache]: Analyzing trace with hash 652281750, now seen corresponding path program 1 times [2019-11-24 05:39:51,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:51,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423262661] [2019-11-24 05:39:51,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:51,800 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 05:39:51,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423262661] [2019-11-24 05:39:51,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:39:51,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:39:51,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745816600] [2019-11-24 05:39:51,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:39:51,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:39:51,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:39:51,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:39:51,826 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-24 05:39:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:39:51,856 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-11-24 05:39:51,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:39:51,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:39:51,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:39:51,869 INFO L225 Difference]: With dead ends: 21 [2019-11-24 05:39:51,869 INFO L226 Difference]: Without dead ends: 10 [2019-11-24 05:39:51,872 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 05:39:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-24 05:39:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-24 05:39:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-24 05:39:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-11-24 05:39:51,902 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2019-11-24 05:39:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:39:51,902 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-24 05:39:51,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:39:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-11-24 05:39:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:39:51,903 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:51,903 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:51,904 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:51,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:51,904 INFO L82 PathProgramCache]: Analyzing trace with hash 184277197, now seen corresponding path program 1 times [2019-11-24 05:39:51,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:51,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681645203] [2019-11-24 05:39:51,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:51,983 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 05:39:51,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681645203] [2019-11-24 05:39:51,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210750800] [2019-11-24 05:39:51,984 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 05:39:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:52,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 05:39:52,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:39:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:39:52,076 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:39:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:39:52,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 05:39:52,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-24 05:39:52,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103182120] [2019-11-24 05:39:52,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:39:52,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:39:52,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:39:52,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:39:52,102 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-11-24 05:39:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:39:52,163 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2019-11-24 05:39:52,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 05:39:52,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-24 05:39:52,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:39:52,165 INFO L225 Difference]: With dead ends: 22 [2019-11-24 05:39:52,165 INFO L226 Difference]: Without dead ends: 16 [2019-11-24 05:39:52,166 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:39:52,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-24 05:39:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-24 05:39:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-24 05:39:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-11-24 05:39:52,172 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2019-11-24 05:39:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:39:52,173 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-24 05:39:52,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:39:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-11-24 05:39:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:39:52,175 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:52,176 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:52,376 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:39:52,377 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:52,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:52,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1226965997, now seen corresponding path program 1 times [2019-11-24 05:39:52,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:52,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995522918] [2019-11-24 05:39:52,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-24 05:39:52,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995522918] [2019-11-24 05:39:52,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025305554] [2019-11-24 05:39:52,435 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 05:39:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:52,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 05:39:52,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:39:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 05:39:52,526 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:39:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 05:39:52,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 05:39:52,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-24 05:39:52,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486785407] [2019-11-24 05:39:52,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:39:52,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:39:52,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:39:52,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:39:52,565 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-11-24 05:39:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:39:52,586 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-24 05:39:52,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 05:39:52,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-24 05:39:52,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:39:52,587 INFO L225 Difference]: With dead ends: 24 [2019-11-24 05:39:52,587 INFO L226 Difference]: Without dead ends: 18 [2019-11-24 05:39:52,588 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:39:52,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-24 05:39:52,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-24 05:39:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-24 05:39:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-24 05:39:52,593 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2019-11-24 05:39:52,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:39:52,594 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-24 05:39:52,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:39:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-24 05:39:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 05:39:52,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:52,595 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:52,798 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:39:52,799 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:52,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:52,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1575042285, now seen corresponding path program 1 times [2019-11-24 05:39:52,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:52,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348627082] [2019-11-24 05:39:52,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-24 05:39:52,843 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348627082] [2019-11-24 05:39:52,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149275733] [2019-11-24 05:39:52,844 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 [2019-11-24 05:39:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:52,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:39:52,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:39:52,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-24 05:39:52,908 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:39:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-24 05:39:52,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [444502306] [2019-11-24 05:39:52,988 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:39:52,988 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:39:52,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:39:53,007 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:39:53,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:40:02,505 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2019-11-24 05:40:02,798 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 279 [2019-11-24 05:40:03,101 WARN L192 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 327 [2019-11-24 05:40:03,329 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 321 [2019-11-24 05:40:03,528 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 394 DAG size of output: 389 [2019-11-24 05:40:03,772 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 381 DAG size of output: 379 [2019-11-24 05:40:04,095 WARN L192 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 498 DAG size of output: 494 [2019-11-24 05:40:04,406 WARN L192 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 486 DAG size of output: 485 [2019-11-24 05:40:04,868 WARN L192 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 641 DAG size of output: 640 [2019-11-24 05:40:05,463 WARN L192 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 635 DAG size of output: 635 [2019-11-24 05:40:06,314 WARN L192 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 821 DAG size of output: 820 [2019-11-24 05:40:07,282 WARN L192 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 815 DAG size of output: 811 [2019-11-24 05:40:08,627 WARN L192 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1040 DAG size of output: 1040 [2019-11-24 05:40:10,129 WARN L192 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1035 DAG size of output: 1034 [2019-11-24 05:40:12,306 WARN L192 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 1333 DAG size of output: 1327 [2019-11-24 05:40:14,656 WARN L192 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 1319 DAG size of output: 1317 [2019-11-24 05:40:18,139 WARN L192 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 1641 DAG size of output: 1639 [2019-11-24 05:40:21,822 WARN L192 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 1640 DAG size of output: 1635 [2019-11-24 05:40:27,175 WARN L192 SmtUtils]: Spent 5.27 s on a formula simplification. DAG size of input: 2088 DAG size of output: 2085 [2019-11-24 05:40:33,276 WARN L192 SmtUtils]: Spent 5.80 s on a formula simplification. DAG size of input: 2086 DAG size of output: 2018 [2019-11-24 05:40:37,824 WARN L192 SmtUtils]: Spent 4.36 s on a formula simplification that was a NOOP. DAG size: 1833 [2019-11-24 05:40:42,267 WARN L192 SmtUtils]: Spent 4.44 s on a formula simplification. DAG size of input: 1834 DAG size of output: 1834 [2019-11-24 05:40:49,717 WARN L192 SmtUtils]: Spent 7.36 s on a formula simplification. DAG size of input: 2336 DAG size of output: 2335 [2019-11-24 05:40:57,385 WARN L192 SmtUtils]: Spent 7.52 s on a formula simplification. DAG size of input: 2330 DAG size of output: 2330 [2019-11-24 05:41:09,423 WARN L192 SmtUtils]: Spent 11.89 s on a formula simplification. DAG size of input: 2864 DAG size of output: 2858 [2019-11-24 05:41:21,893 WARN L192 SmtUtils]: Spent 12.29 s on a formula simplification. DAG size of input: 2851 DAG size of output: 2851