/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/sum20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:44:33,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:44:33,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:44:33,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:44:33,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:44:33,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:44:33,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:44:33,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:44:33,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:44:33,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:44:33,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:44:33,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:44:33,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:44:33,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:44:33,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:44:33,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:44:33,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:44:33,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:44:33,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:44:33,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:44:33,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:44:33,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:44:33,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:44:33,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:44:33,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:44:33,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:44:33,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:44:33,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:44:33,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:44:33,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:44:33,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:44:33,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:44:33,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:44:33,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:44:33,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:44:33,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:44:33,116 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 05:44:33,135 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:44:33,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:44:33,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:44:33,138 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:44:33,138 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:44:33,140 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:44:33,140 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:44:33,140 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:44:33,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:44:33,141 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:44:33,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:44:33,141 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:44:33,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:44:33,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:44:33,142 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:44:33,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:44:33,144 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:44:33,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:44:33,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:44:33,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:44:33,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:44:33,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:44:33,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:44:33,146 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:44:33,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:44:33,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:44:33,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:44:33,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:44:33,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:44:33,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:44:33,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:44:33,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:44:33,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:44:33,149 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:44:33,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:44:33,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:44:33,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:44:33,150 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:44:33,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:44:33,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:44:33,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:44:33,451 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:44:33,452 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:44:33,452 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum20-2.i [2019-11-24 05:44:33,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d27e67d/365d2af8eca941cba6316a62f37d6b45/FLAG385181318 [2019-11-24 05:44:33,937 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:44:33,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum20-2.i [2019-11-24 05:44:33,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d27e67d/365d2af8eca941cba6316a62f37d6b45/FLAG385181318 [2019-11-24 05:44:34,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d27e67d/365d2af8eca941cba6316a62f37d6b45 [2019-11-24 05:44:34,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:44:34,398 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:44:34,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:44:34,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:44:34,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:44:34,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:44:34" (1/1) ... [2019-11-24 05:44:34,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18acda8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34, skipping insertion in model container [2019-11-24 05:44:34,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:44:34" (1/1) ... [2019-11-24 05:44:34,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:44:34,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:44:34,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:44:34,711 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:44:34,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:44:34,776 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:44:34,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34 WrapperNode [2019-11-24 05:44:34,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:44:34,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:44:34,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:44:34,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:44:34,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34" (1/1) ... [2019-11-24 05:44:34,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34" (1/1) ... [2019-11-24 05:44:34,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:44:34,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:44:34,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:44:34,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:44:34,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34" (1/1) ... [2019-11-24 05:44:34,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34" (1/1) ... [2019-11-24 05:44:34,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34" (1/1) ... [2019-11-24 05:44:34,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34" (1/1) ... [2019-11-24 05:44:34,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34" (1/1) ... [2019-11-24 05:44:34,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34" (1/1) ... [2019-11-24 05:44:34,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34" (1/1) ... [2019-11-24 05:44:34,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:44:34,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:44:34,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:44:34,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:44:34,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34" (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 05:44:35,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 05:44:35,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:44:35,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:44:35,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 05:44:35,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:44:35,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 05:44:35,553 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:44:35,553 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-24 05:44:35,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:44:35 BoogieIcfgContainer [2019-11-24 05:44:35,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:44:35,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:44:35,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:44:35,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:44:35,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:44:34" (1/3) ... [2019-11-24 05:44:35,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cf6657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:44:35, skipping insertion in model container [2019-11-24 05:44:35,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:34" (2/3) ... [2019-11-24 05:44:35,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cf6657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:44:35, skipping insertion in model container [2019-11-24 05:44:35,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:44:35" (3/3) ... [2019-11-24 05:44:35,566 INFO L109 eAbstractionObserver]: Analyzing ICFG sum20-2.i [2019-11-24 05:44:35,576 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:44:35,584 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 05:44:35,595 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 05:44:35,617 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:44:35,618 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:44:35,618 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:44:35,618 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:44:35,618 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:44:35,619 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:44:35,619 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:44:35,619 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:44:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-24 05:44:35,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:44:35,640 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:44:35,642 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:44:35,642 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:44:35,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:44:35,649 INFO L82 PathProgramCache]: Analyzing trace with hash 652281750, now seen corresponding path program 1 times [2019-11-24 05:44:35,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:44:35,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202459644] [2019-11-24 05:44:35,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:44:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:35,812 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 05:44:35,813 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202459644] [2019-11-24 05:44:35,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:44:35,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:44:35,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807461185] [2019-11-24 05:44:35,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:44:35,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:44:35,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:44:35,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:44:35,838 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-24 05:44:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:44:35,867 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-11-24 05:44:35,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:44:35,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:44:35,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:44:35,879 INFO L225 Difference]: With dead ends: 21 [2019-11-24 05:44:35,879 INFO L226 Difference]: Without dead ends: 10 [2019-11-24 05:44:35,883 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 05:44:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-24 05:44:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-24 05:44:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-24 05:44:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-11-24 05:44:35,918 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2019-11-24 05:44:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:44:35,919 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-24 05:44:35,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:44:35,919 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-11-24 05:44:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:44:35,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:44:35,920 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:44:35,920 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:44:35,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:44:35,920 INFO L82 PathProgramCache]: Analyzing trace with hash 184277197, now seen corresponding path program 1 times [2019-11-24 05:44:35,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:44:35,921 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104596981] [2019-11-24 05:44:35,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:44:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:36,009 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 05:44:36,010 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104596981] [2019-11-24 05:44:36,010 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009839826] [2019-11-24 05:44:36,011 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 05:44:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:36,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 05:44:36,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:44:36,114 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 05:44:36,115 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:44:36,127 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 05:44:36,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 05:44:36,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-24 05:44:36,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590847713] [2019-11-24 05:44:36,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:44:36,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:44:36,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:44:36,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:44:36,131 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-11-24 05:44:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:44:36,181 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2019-11-24 05:44:36,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 05:44:36,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-24 05:44:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:44:36,182 INFO L225 Difference]: With dead ends: 22 [2019-11-24 05:44:36,182 INFO L226 Difference]: Without dead ends: 16 [2019-11-24 05:44:36,183 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 05:44:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-24 05:44:36,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-24 05:44:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-24 05:44:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-11-24 05:44:36,188 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2019-11-24 05:44:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:44:36,188 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-24 05:44:36,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:44:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-11-24 05:44:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:44:36,189 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:44:36,190 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:44:36,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:44:36,395 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:44:36,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:44:36,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1226965997, now seen corresponding path program 1 times [2019-11-24 05:44:36,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:44:36,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547802088] [2019-11-24 05:44:36,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:44:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:36,448 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 05:44:36,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547802088] [2019-11-24 05:44:36,451 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912619233] [2019-11-24 05:44:36,451 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 05:44:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:36,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 05:44:36,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:44:36,536 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 05:44:36,537 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:44:36,550 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 05:44:36,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 05:44:36,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-24 05:44:36,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202105742] [2019-11-24 05:44:36,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:44:36,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:44:36,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:44:36,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:44:36,554 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-11-24 05:44:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:44:36,581 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-24 05:44:36,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 05:44:36,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-24 05:44:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:44:36,585 INFO L225 Difference]: With dead ends: 24 [2019-11-24 05:44:36,585 INFO L226 Difference]: Without dead ends: 18 [2019-11-24 05:44:36,586 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 05:44:36,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-24 05:44:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-24 05:44:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-24 05:44:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-24 05:44:36,596 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2019-11-24 05:44:36,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:44:36,608 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-24 05:44:36,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:44:36,609 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-24 05:44:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 05:44:36,612 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:44:36,612 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:44:36,813 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:44:36,813 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:44:36,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:44:36,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1575042285, now seen corresponding path program 1 times [2019-11-24 05:44:36,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:44:36,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016034255] [2019-11-24 05:44:36,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:44:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:36,888 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 05:44:36,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016034255] [2019-11-24 05:44:36,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000481699] [2019-11-24 05:44:36,889 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 05:44:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:36,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:44:36,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:44:36,965 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 05:44:36,965 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:44:36,988 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 05:44:36,988 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [514458947] [2019-11-24 05:44:37,013 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:44:37,013 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:44:37,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:44:37,026 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:44:37,027 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:44:46,273 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 324 [2019-11-24 05:44:46,449 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 317 [2019-11-24 05:44:46,692 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 416 DAG size of output: 409 [2019-11-24 05:44:46,937 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 407 DAG size of output: 407 [2019-11-24 05:44:47,298 WARN L192 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 532 DAG size of output: 530 [2019-11-24 05:44:47,730 WARN L192 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 531 DAG size of output: 523 [2019-11-24 05:44:48,215 WARN L192 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 641 DAG size of output: 635 [2019-11-24 05:44:48,740 WARN L192 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 629 DAG size of output: 622 [2019-11-24 05:44:49,446 WARN L192 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 810 DAG size of output: 807 [2019-11-24 05:44:50,229 WARN L192 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 802 DAG size of output: 800 [2019-11-24 05:44:51,264 WARN L192 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 988 DAG size of output: 983 [2019-11-24 05:44:52,557 WARN L192 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 983 DAG size of output: 978 [2019-11-24 05:44:53,879 WARN L192 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 979 [2019-11-24 05:44:55,048 WARN L192 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 980 DAG size of output: 975 [2019-11-24 05:44:56,243 WARN L192 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 978 [2019-11-24 05:44:57,425 WARN L192 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 979 DAG size of output: 947 [2019-11-24 05:44:58,512 WARN L192 SmtUtils]: Spent 975.00 ms on a formula simplification that was a NOOP. DAG size: 920 [2019-11-24 05:44:59,545 WARN L192 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 921 DAG size of output: 921 [2019-11-24 05:45:01,254 WARN L192 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 1187 DAG size of output: 1187 [2019-11-24 05:45:03,106 WARN L192 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 1188 DAG size of output: 1186 [2019-11-24 05:45:05,862 WARN L192 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 1471 DAG size of output: 1470 [2019-11-24 05:45:08,798 WARN L192 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 1470 DAG size of output: 1466 [2019-11-24 05:45:13,372 WARN L192 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 1818 DAG size of output: 1816 [2019-11-24 05:45:18,302 WARN L192 SmtUtils]: Spent 4.73 s on a formula simplification. DAG size of input: 1809 DAG size of output: 1806