/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:41:14,415 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-07 01:41:14,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:41:14,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:41:14,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:41:14,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:41:14,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:41:14,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:41:14,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:41:14,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:41:14,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:41:14,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:41:14,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:41:14,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:41:14,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:41:14,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:41:14,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:41:14,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:41:14,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 01:41:14,511 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:41:14,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:41:14,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:41:14,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:41:14,513 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:41:14,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:41:14,514 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:41:14,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:41:14,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:41:14,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:41:14,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:41:14,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:41:14,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:41:14,515 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:41:14,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:41:14,515 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:41:14,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:41:14,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:41:14,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:41:14,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:41:14,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:41:14,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:41:14,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:41:14,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:41:14,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:41:14,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:41:14,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:41:14,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:41:14,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 01:41:14,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:41:14,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:41:14,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:41:14,836 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:41:14,836 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:41:14,837 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06.c [2019-11-07 01:41:14,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7db31dfce/cf29f9640ff0488f8a16dddc8ca2fe02/FLAG60e5507bb [2019-11-07 01:41:15,552 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:41:15,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label06.c [2019-11-07 01:41:15,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7db31dfce/cf29f9640ff0488f8a16dddc8ca2fe02/FLAG60e5507bb [2019-11-07 01:41:15,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7db31dfce/cf29f9640ff0488f8a16dddc8ca2fe02 [2019-11-07 01:41:15,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:41:15,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:41:15,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:41:15,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:41:15,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:41:15,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:15" (1/1) ... [2019-11-07 01:41:15,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc07b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:15, skipping insertion in model container [2019-11-07 01:41:15,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:15" (1/1) ... [2019-11-07 01:41:15,758 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:41:15,846 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:41:16,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:41:16,726 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:41:17,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:41:17,118 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:41:17,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:17 WrapperNode [2019-11-07 01:41:17,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:41:17,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:41:17,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:41:17,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:41:17,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:17" (1/1) ... [2019-11-07 01:41:17,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:17" (1/1) ... [2019-11-07 01:41:17,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:17" (1/1) ... [2019-11-07 01:41:17,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:17" (1/1) ... [2019-11-07 01:41:17,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:17" (1/1) ... [2019-11-07 01:41:17,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:17" (1/1) ... [2019-11-07 01:41:17,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:17" (1/1) ... [2019-11-07 01:41:17,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:41:17,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:41:17,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:41:17,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:41:17,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:17" (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 [2019-11-07 01:41:17,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:41:17,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:41:17,400 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-07 01:41:17,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:41:17,401 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-07 01:41:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:41:17,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:41:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 01:41:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:41:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:41:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:41:20,516 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:41:20,516 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 01:41:20,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:20 BoogieIcfgContainer [2019-11-07 01:41:20,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:41:20,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:41:20,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:41:20,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:41:20,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:41:15" (1/3) ... [2019-11-07 01:41:20,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@963d674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:20, skipping insertion in model container [2019-11-07 01:41:20,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:17" (2/3) ... [2019-11-07 01:41:20,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@963d674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:20, skipping insertion in model container [2019-11-07 01:41:20,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:20" (3/3) ... [2019-11-07 01:41:20,526 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label06.c [2019-11-07 01:41:20,536 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:41:20,545 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:41:20,556 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:41:20,584 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:41:20,584 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:41:20,584 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:41:20,584 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:41:20,584 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:41:20,585 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:41:20,585 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:41:20,585 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:41:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-11-07 01:41:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 01:41:20,621 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:41:20,622 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:41:20,624 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:41:20,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:41:20,630 INFO L82 PathProgramCache]: Analyzing trace with hash 136470310, now seen corresponding path program 1 times [2019-11-07 01:41:20,640 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:41:20,640 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101465164] [2019-11-07 01:41:20,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:41:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:41:21,414 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101465164] [2019-11-07 01:41:21,415 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:41:21,416 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:41:21,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441418435] [2019-11-07 01:41:21,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:41:21,423 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:41:21,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:41:21,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:41:21,445 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-11-07 01:41:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:41:22,577 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-11-07 01:41:22,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:41:22,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-11-07 01:41:22,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:41:22,611 INFO L225 Difference]: With dead ends: 462 [2019-11-07 01:41:22,611 INFO L226 Difference]: Without dead ends: 301 [2019-11-07 01:41:22,618 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:41:22,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-11-07 01:41:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-11-07 01:41:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-11-07 01:41:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 529 transitions. [2019-11-07 01:41:22,707 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 529 transitions. Word has length 149 [2019-11-07 01:41:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:41:22,709 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 529 transitions. [2019-11-07 01:41:22,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:41:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 529 transitions. [2019-11-07 01:41:22,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-07 01:41:22,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:41:22,715 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:41:22,715 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:41:22,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:41:22,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1532431598, now seen corresponding path program 1 times [2019-11-07 01:41:22,716 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:41:22,716 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977301448] [2019-11-07 01:41:22,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:41:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:41:22,946 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977301448] [2019-11-07 01:41:22,946 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:41:22,946 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:41:22,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547994946] [2019-11-07 01:41:22,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:41:22,948 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:41:22,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:41:22,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:41:22,949 INFO L87 Difference]: Start difference. First operand 301 states and 529 transitions. Second operand 3 states. [2019-11-07 01:41:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:41:23,899 INFO L93 Difference]: Finished difference Result 891 states and 1588 transitions. [2019-11-07 01:41:23,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:41:23,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-11-07 01:41:23,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:41:23,906 INFO L225 Difference]: With dead ends: 891 [2019-11-07 01:41:23,907 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 01:41:23,910 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:41:23,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 01:41:23,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-11-07 01:41:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-07 01:41:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 1031 transitions. [2019-11-07 01:41:23,954 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 1031 transitions. Word has length 161 [2019-11-07 01:41:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:41:23,954 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 1031 transitions. [2019-11-07 01:41:23,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:41:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 1031 transitions. [2019-11-07 01:41:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-11-07 01:41:23,961 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:41:23,961 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:41:23,962 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:41:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:41:23,962 INFO L82 PathProgramCache]: Analyzing trace with hash 244844697, now seen corresponding path program 1 times [2019-11-07 01:41:23,963 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:41:23,963 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238278952] [2019-11-07 01:41:23,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:41:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:41:24,107 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238278952] [2019-11-07 01:41:24,108 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:41:24,108 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:41:24,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510266509] [2019-11-07 01:41:24,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:41:24,109 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:41:24,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:41:24,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:41:24,110 INFO L87 Difference]: Start difference. First operand 595 states and 1031 transitions. Second operand 6 states. [2019-11-07 01:41:25,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:41:25,480 INFO L93 Difference]: Finished difference Result 1821 states and 3273 transitions. [2019-11-07 01:41:25,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 01:41:25,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2019-11-07 01:41:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:41:25,491 INFO L225 Difference]: With dead ends: 1821 [2019-11-07 01:41:25,492 INFO L226 Difference]: Without dead ends: 1231 [2019-11-07 01:41:25,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-07 01:41:25,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2019-11-07 01:41:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1209. [2019-11-07 01:41:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2019-11-07 01:41:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1889 transitions. [2019-11-07 01:41:25,554 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1889 transitions. Word has length 176 [2019-11-07 01:41:25,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:41:25,554 INFO L462 AbstractCegarLoop]: Abstraction has 1209 states and 1889 transitions. [2019-11-07 01:41:25,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:41:25,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1889 transitions. [2019-11-07 01:41:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 01:41:25,564 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:41:25,564 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:41:25,564 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:41:25,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:41:25,565 INFO L82 PathProgramCache]: Analyzing trace with hash -998225753, now seen corresponding path program 1 times [2019-11-07 01:41:25,565 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:41:25,565 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680273096] [2019-11-07 01:41:25,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:41:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:41:25,699 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680273096] [2019-11-07 01:41:25,700 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879018819] [2019-11-07 01:41:25,700 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 [2019-11-07 01:41:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:25,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-07 01:41:26,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:41:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:41:26,153 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:41:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:41:26,323 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [959346225] [2019-11-07 01:41:26,397 INFO L159 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-11-07 01:41:26,397 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:41:26,406 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:41:26,417 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:41:26,418 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:41:26,831 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 208 for LOIs [2019-11-07 01:41:28,337 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-11-07 01:41:28,521 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-11-07 01:41:28,633 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2019-11-07 01:41:28,825 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 369 [2019-11-07 01:41:28,940 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-11-07 01:41:29,313 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 369 [2019-11-07 01:41:29,575 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 377 [2019-11-07 01:41:29,964 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 377 [2019-11-07 01:41:30,142 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 170 for LOIs [2019-11-07 01:41:30,562 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 123 [2019-11-07 01:41:30,685 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-11-07 01:41:31,180 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 137 [2019-11-07 01:41:31,429 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-11-07 01:41:32,308 WARN L191 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 144 [2019-11-07 01:41:32,537 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-11-07 01:41:33,713 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 148 [2019-11-07 01:41:33,980 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:41:34,595 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 148 [2019-11-07 01:41:34,846 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:41:37,416 WARN L191 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 367 DAG size of output: 195 [2019-11-07 01:41:38,040 WARN L191 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-11-07 01:41:40,535 WARN L191 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 527 DAG size of output: 195 [2019-11-07 01:41:41,173 WARN L191 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-11-07 01:41:43,834 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 444 DAG size of output: 195 [2019-11-07 01:41:44,906 WARN L191 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 195 [2019-11-07 01:41:46,916 WARN L191 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 361 DAG size of output: 195 [2019-11-07 01:41:47,934 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 195 [2019-11-07 01:41:50,200 WARN L191 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 401 DAG size of output: 195 [2019-11-07 01:41:50,929 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-11-07 01:41:52,612 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 361 DAG size of output: 195 [2019-11-07 01:41:53,243 WARN L191 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 195