/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/mapsum2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:54:57,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:54:57,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:54:57,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:54:57,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:54:57,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:54:57,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:54:57,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:54:57,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:54:57,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:54:57,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:54:57,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:54:57,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:54:57,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:54:57,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:54:57,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:54:57,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:54:57,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:54:57,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:54:57,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:54:57,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:54:57,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:54:57,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:54:57,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:54:57,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:54:57,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:54:57,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:54:57,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:54:57,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-23 22:54:57,944 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:54:57,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:54:57,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 22:54:57,946 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 22:54:57,946 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 22:54:57,946 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 22:54:57,946 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 22:54:57,947 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 22:54:57,947 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 22:54:57,947 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 22:54:57,947 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 22:54:57,947 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 22:54:57,948 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 22:54:57,948 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 22:54:57,948 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 22:54:57,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:54:57,949 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:54:57,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:54:57,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:54:57,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:54:57,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:54:57,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:54:57,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:54:57,950 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:54:57,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:54:57,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:54:57,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:54:57,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:54:57,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:54:57,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:54:57,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:54:57,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:54:57,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:54:57,955 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 22:54:57,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:54:57,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:54:57,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:54:57,956 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 22:54:58,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:54:58,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:54:58,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:54:58,280 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:54:58,281 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:54:58,281 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum2.i [2019-11-23 22:54:58,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9712199/05e3c072fe5c407ea56d9ec4f5751fd7/FLAG50079ada0 [2019-11-23 22:54:58,764 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:54:58,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum2.i [2019-11-23 22:54:58,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9712199/05e3c072fe5c407ea56d9ec4f5751fd7/FLAG50079ada0 [2019-11-23 22:54:59,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9712199/05e3c072fe5c407ea56d9ec4f5751fd7 [2019-11-23 22:54:59,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:54:59,185 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:54:59,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:54:59,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:54:59,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:54:59,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:54:59" (1/1) ... [2019-11-23 22:54:59,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca1bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59, skipping insertion in model container [2019-11-23 22:54:59,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:54:59" (1/1) ... [2019-11-23 22:54:59,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:54:59,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:54:59,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:54:59,409 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:54:59,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:54:59,448 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:54:59,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59 WrapperNode [2019-11-23 22:54:59,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:54:59,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:54:59,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:54:59,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:54:59,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59" (1/1) ... [2019-11-23 22:54:59,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59" (1/1) ... [2019-11-23 22:54:59,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:54:59,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:54:59,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:54:59,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:54:59,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59" (1/1) ... [2019-11-23 22:54:59,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59" (1/1) ... [2019-11-23 22:54:59,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59" (1/1) ... [2019-11-23 22:54:59,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59" (1/1) ... [2019-11-23 22:54:59,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59" (1/1) ... [2019-11-23 22:54:59,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59" (1/1) ... [2019-11-23 22:54:59,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59" (1/1) ... [2019-11-23 22:54:59,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:54:59,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:54:59,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:54:59,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:54:59,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:54:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:54:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:54:59,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:54:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:54:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 22:54:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:55:00,207 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:55:00,207 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 22:55:00,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:55:00 BoogieIcfgContainer [2019-11-23 22:55:00,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:55:00,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:55:00,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:55:00,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:55:00,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:54:59" (1/3) ... [2019-11-23 22:55:00,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3132c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:55:00, skipping insertion in model container [2019-11-23 22:55:00,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:59" (2/3) ... [2019-11-23 22:55:00,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3132c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:55:00, skipping insertion in model container [2019-11-23 22:55:00,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:55:00" (3/3) ... [2019-11-23 22:55:00,224 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum2.i [2019-11-23 22:55:00,234 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:55:00,244 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:55:00,256 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:55:00,282 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:55:00,282 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:55:00,282 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:55:00,282 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:55:00,283 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:55:00,283 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:55:00,283 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:55:00,283 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:55:00,299 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-23 22:55:00,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:55:00,307 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:00,308 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:00,308 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:00,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:00,316 INFO L82 PathProgramCache]: Analyzing trace with hash -977729615, now seen corresponding path program 1 times [2019-11-23 22:55:00,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:00,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806782785] [2019-11-23 22:55:00,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:55:00,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806782785] [2019-11-23 22:55:00,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:55:00,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:55:00,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836625407] [2019-11-23 22:55:00,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:55:00,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:55:00,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:55:00,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:55:00,501 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-23 22:55:00,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:55:00,529 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-11-23 22:55:00,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:55:00,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-23 22:55:00,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:55:00,542 INFO L225 Difference]: With dead ends: 21 [2019-11-23 22:55:00,542 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 22:55:00,545 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:55:00,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 22:55:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 22:55:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 22:55:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-11-23 22:55:00,583 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2019-11-23 22:55:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:55:00,583 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-23 22:55:00,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:55:00,584 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-11-23 22:55:00,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:55:00,584 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:00,584 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:00,585 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:00,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:00,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1165895748, now seen corresponding path program 1 times [2019-11-23 22:55:00,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:00,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299783] [2019-11-23 22:55:00,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:55:00,646 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299783] [2019-11-23 22:55:00,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527368125] [2019-11-23 22:55:00,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:55:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:00,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-23 22:55:00,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:55:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:55:00,742 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:55:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:55:00,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:55:00,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-23 22:55:00,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029961252] [2019-11-23 22:55:00,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:55:00,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:55:00,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:55:00,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:55:00,758 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-11-23 22:55:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:55:00,802 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2019-11-23 22:55:00,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:55:00,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-23 22:55:00,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:55:00,804 INFO L225 Difference]: With dead ends: 22 [2019-11-23 22:55:00,804 INFO L226 Difference]: Without dead ends: 16 [2019-11-23 22:55:00,805 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 [2019-11-23 22:55:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-23 22:55:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-23 22:55:00,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-23 22:55:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-11-23 22:55:00,809 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2019-11-23 22:55:00,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:55:00,809 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-23 22:55:00,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:55:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-11-23 22:55:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-23 22:55:00,810 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:00,811 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:01,015 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:55:01,016 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:01,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1510942468, now seen corresponding path program 1 times [2019-11-23 22:55:01,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:01,018 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712843697] [2019-11-23 22:55:01,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-23 22:55:01,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712843697] [2019-11-23 22:55:01,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175394220] [2019-11-23 22:55:01,099 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 [2019-11-23 22:55:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:01,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-23 22:55:01,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:55:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-23 22:55:01,208 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:55:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-23 22:55:01,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:55:01,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-23 22:55:01,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545791983] [2019-11-23 22:55:01,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:55:01,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:55:01,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:55:01,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:55:01,228 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-11-23 22:55:01,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:55:01,244 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-23 22:55:01,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:55:01,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-23 22:55:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:55:01,245 INFO L225 Difference]: With dead ends: 24 [2019-11-23 22:55:01,245 INFO L226 Difference]: Without dead ends: 18 [2019-11-23 22:55:01,246 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 [2019-11-23 22:55:01,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-23 22:55:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-23 22:55:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-23 22:55:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-23 22:55:01,253 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2019-11-23 22:55:01,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:55:01,253 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-23 22:55:01,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:55:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-23 22:55:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 22:55:01,254 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:01,254 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:01,457 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:55:01,458 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:01,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1316778556, now seen corresponding path program 1 times [2019-11-23 22:55:01,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:01,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203060319] [2019-11-23 22:55:01,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-23 22:55:01,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203060319] [2019-11-23 22:55:01,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757309410] [2019-11-23 22:55:01,530 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 [2019-11-23 22:55:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:01,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:55:01,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:55:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-23 22:55:01,595 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:55:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-23 22:55:01,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1749831978] [2019-11-23 22:55:01,647 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-23 22:55:01,648 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 22:55:01,658 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 22:55:01,670 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 22:55:01,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 22:55:39,195 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2019-11-23 22:55:39,313 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 273 [2019-11-23 22:55:44,955 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 289 [2019-11-23 22:55:49,091 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 292 [2019-11-23 22:56:00,499 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 320 [2019-11-23 22:56:00,845 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2019-11-23 22:56:03,241 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 329 [2019-11-23 22:56:05,990 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 331 [2019-11-23 22:56:06,212 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 334 [2019-11-23 22:56:08,569 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2019-11-23 22:56:08,679 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 339 [2019-11-23 22:56:11,677 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-23 22:56:11,793 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 341 [2019-11-23 22:56:14,403 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 362 [2019-11-23 22:56:14,523 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 360 [2019-11-23 22:56:17,134 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 365 [2019-11-23 22:56:17,264 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 363 [2019-11-23 22:56:20,003 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-11-23 22:56:20,135 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 366 [2019-11-23 22:56:23,032 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-11-23 22:56:23,154 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 369 [2019-11-23 22:56:23,288 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2019-11-23 22:56:23,407 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 372 [2019-11-23 22:56:23,548 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2019-11-23 22:56:23,661 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 376 [2019-11-23 22:56:26,521 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 380 [2019-11-23 22:56:26,650 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 381 DAG size of output: 380 [2019-11-23 22:56:29,457 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 390 DAG size of output: 387 [2019-11-23 22:56:29,602 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 383