/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/Problem01_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:35:23,306 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-07 01:35:23,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:35:23,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:35:23,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:35:23,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:35:23,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:35:23,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:35:23,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:35:23,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:35:23,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:35:23,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:35:23,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:35:23,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:35:23,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:35:23,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:35:23,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:35:23,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:35:23,381 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 01:35:23,402 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:35:23,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:35:23,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:35:23,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:35:23,407 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:35:23,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:35:23,408 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:35:23,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:35:23,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:35:23,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:35:23,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:35:23,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:35:23,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:35:23,410 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:35:23,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:35:23,411 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:35:23,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:35:23,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:35:23,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:35:23,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:35:23,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:35:23,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:35:23,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:35:23,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:35:23,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:35:23,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:35:23,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:35:23,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:35:23,414 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 01:35:23,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:35:23,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:35:23,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:35:23,753 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:35:23,754 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:35:23,754 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2019-11-07 01:35:23,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4695653c/5ec6775a17124723ab0c1e38a12f3ec9/FLAG2d40140ac [2019-11-07 01:35:24,403 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:35:24,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2019-11-07 01:35:24,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4695653c/5ec6775a17124723ab0c1e38a12f3ec9/FLAG2d40140ac [2019-11-07 01:35:24,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4695653c/5ec6775a17124723ab0c1e38a12f3ec9 [2019-11-07 01:35:24,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:35:24,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:35:24,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:35:24,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:35:24,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:35:24,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:24" (1/1) ... [2019-11-07 01:35:24,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c0dd23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:24, skipping insertion in model container [2019-11-07 01:35:24,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:24" (1/1) ... [2019-11-07 01:35:24,747 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:35:24,798 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:35:25,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:35:25,338 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:35:25,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:35:25,458 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:35:25,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:25 WrapperNode [2019-11-07 01:35:25,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:35:25,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:35:25,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:35:25,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:35:25,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:25" (1/1) ... [2019-11-07 01:35:25,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:25" (1/1) ... [2019-11-07 01:35:25,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:25" (1/1) ... [2019-11-07 01:35:25,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:25" (1/1) ... [2019-11-07 01:35:25,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:25" (1/1) ... [2019-11-07 01:35:25,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:25" (1/1) ... [2019-11-07 01:35:25,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:25" (1/1) ... [2019-11-07 01:35:25,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:35:25,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:35:25,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:35:25,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:35:25,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:25" (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 01:35:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:35:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:35:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-07 01:35:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:35:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-07 01:35:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:35:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:35:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 01:35:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:35:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:35:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:35:27,883 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:35:27,883 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 01:35:27,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:35:27 BoogieIcfgContainer [2019-11-07 01:35:27,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:35:27,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:35:27,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:35:27,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:35:27,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:35:24" (1/3) ... [2019-11-07 01:35:27,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50068b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:35:27, skipping insertion in model container [2019-11-07 01:35:27,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:25" (2/3) ... [2019-11-07 01:35:27,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50068b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:35:27, skipping insertion in model container [2019-11-07 01:35:27,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:35:27" (3/3) ... [2019-11-07 01:35:27,921 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2019-11-07 01:35:27,934 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:35:27,943 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:35:27,954 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:35:27,977 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:35:27,977 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:35:27,978 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:35:27,978 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:35:27,978 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:35:27,978 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:35:27,979 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:35:27,979 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:35:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-11-07 01:35:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-07 01:35:28,013 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:35:28,014 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] [2019-11-07 01:35:28,017 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:35:28,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:35:28,024 INFO L82 PathProgramCache]: Analyzing trace with hash 826819684, now seen corresponding path program 1 times [2019-11-07 01:35:28,034 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:35:28,034 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174736931] [2019-11-07 01:35:28,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:35:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:35:28,514 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 01:35:28,515 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174736931] [2019-11-07 01:35:28,515 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:35:28,516 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:35:28,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960062413] [2019-11-07 01:35:28,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:35:28,524 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:35:28,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:35:28,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:35:28,542 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-11-07 01:35:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:35:29,061 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-11-07 01:35:29,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:35:29,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-11-07 01:35:29,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:35:29,085 INFO L225 Difference]: With dead ends: 246 [2019-11-07 01:35:29,085 INFO L226 Difference]: Without dead ends: 157 [2019-11-07 01:35:29,090 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 01:35:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-11-07 01:35:29,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-11-07 01:35:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-11-07 01:35:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 285 transitions. [2019-11-07 01:35:29,200 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 285 transitions. Word has length 77 [2019-11-07 01:35:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:35:29,203 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 285 transitions. [2019-11-07 01:35:29,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:35:29,204 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 285 transitions. [2019-11-07 01:35:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-07 01:35:29,213 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:35:29,214 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 01:35:29,214 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:35:29,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:35:29,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1022496549, now seen corresponding path program 1 times [2019-11-07 01:35:29,215 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:35:29,216 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274326446] [2019-11-07 01:35:29,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:35:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:35:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:35:29,383 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274326446] [2019-11-07 01:35:29,383 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:35:29,384 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 01:35:29,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648816189] [2019-11-07 01:35:29,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 01:35:29,386 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:35:29,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 01:35:29,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:35:29,387 INFO L87 Difference]: Start difference. First operand 157 states and 285 transitions. Second operand 5 states. [2019-11-07 01:35:30,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:35:30,029 INFO L93 Difference]: Finished difference Result 479 states and 892 transitions. [2019-11-07 01:35:30,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 01:35:30,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2019-11-07 01:35:30,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:35:30,035 INFO L225 Difference]: With dead ends: 479 [2019-11-07 01:35:30,035 INFO L226 Difference]: Without dead ends: 327 [2019-11-07 01:35:30,037 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-07 01:35:30,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-11-07 01:35:30,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2019-11-07 01:35:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2019-11-07 01:35:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 547 transitions. [2019-11-07 01:35:30,083 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 547 transitions. Word has length 86 [2019-11-07 01:35:30,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:35:30,084 INFO L462 AbstractCegarLoop]: Abstraction has 317 states and 547 transitions. [2019-11-07 01:35:30,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 01:35:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 547 transitions. [2019-11-07 01:35:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 01:35:30,088 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:35:30,088 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 01:35:30,089 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:35:30,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:35:30,089 INFO L82 PathProgramCache]: Analyzing trace with hash -311202744, now seen corresponding path program 1 times [2019-11-07 01:35:30,089 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:35:30,090 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374540202] [2019-11-07 01:35:30,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:35:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:35:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:35:30,181 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374540202] [2019-11-07 01:35:30,182 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957459090] [2019-11-07 01:35:30,182 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 01:35:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:35:30,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:35:30,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:35:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 01:35:30,402 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:35:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 01:35:30,502 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 01:35:30,506 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-11-07 01:35:30,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330589525] [2019-11-07 01:35:30,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:35:30,508 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:35:30,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:35:30,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:35:30,509 INFO L87 Difference]: Start difference. First operand 317 states and 547 transitions. Second operand 3 states. [2019-11-07 01:35:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:35:30,935 INFO L93 Difference]: Finished difference Result 935 states and 1648 transitions. [2019-11-07 01:35:30,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:35:30,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2019-11-07 01:35:30,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:35:30,942 INFO L225 Difference]: With dead ends: 935 [2019-11-07 01:35:30,942 INFO L226 Difference]: Without dead ends: 623 [2019-11-07 01:35:30,944 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:35:30,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-07 01:35:30,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-07 01:35:30,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-07 01:35:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1060 transitions. [2019-11-07 01:35:30,984 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1060 transitions. Word has length 97 [2019-11-07 01:35:30,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:35:30,986 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 1060 transitions. [2019-11-07 01:35:30,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:35:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1060 transitions. [2019-11-07 01:35:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-07 01:35:30,996 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:35:30,996 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-11-07 01:35:31,200 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:35:31,201 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:35:31,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:35:31,201 INFO L82 PathProgramCache]: Analyzing trace with hash -661428364, now seen corresponding path program 1 times [2019-11-07 01:35:31,202 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:35:31,202 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162457802] [2019-11-07 01:35:31,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:35:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:35:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:35:31,294 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162457802] [2019-11-07 01:35:31,295 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418548478] [2019-11-07 01:35:31,295 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 [2019-11-07 01:35:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:35:31,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:35:31,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:35:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:35:31,472 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:35:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:35:31,585 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [99759185] [2019-11-07 01:35:31,626 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-11-07 01:35:31,627 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:35:31,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:35:31,647 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:35:31,648 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:35:31,902 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 96 for LOIs [2019-11-07 01:35:32,902 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2019-11-07 01:35:33,253 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 186 [2019-11-07 01:35:33,491 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 135 for LOIs [2019-11-07 01:35:33,805 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 137 [2019-11-07 01:35:33,917 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-11-07 01:35:34,172 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-11-07 01:35:34,344 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-11-07 01:35:34,653 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 143 [2019-11-07 01:35:34,810 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-11-07 01:35:35,087 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 143 [2019-11-07 01:35:35,226 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-11-07 01:35:35,461 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2019-11-07 01:35:35,598 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-11-07 01:35:36,035 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2019-11-07 01:35:36,144 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-11-07 01:35:36,409 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2019-11-07 01:35:36,513 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-11-07 01:35:36,736 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2019-11-07 01:35:36,851 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-11-07 01:35:37,293 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2019-11-07 01:35:37,573 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2019-11-07 01:35:37,731 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-11-07 01:35:38,044 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2019-11-07 01:35:38,339 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-11-07 01:35:38,615 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-07 01:35:38,765 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-07 01:35:38,934 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-11-07 01:35:39,226 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2019-11-07 01:35:39,665 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2019-11-07 01:35:39,883 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 142 [2019-11-07 01:35:39,999 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-11-07 01:35:40,342 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 141 [2019-11-07 01:35:40,787 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 141 [2019-11-07 01:35:41,209 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 141 [2019-11-07 01:35:42,255 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 141 [2019-11-07 01:35:43,064 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 141 [2019-11-07 01:35:43,521 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 141 [2019-11-07 01:35:44,160 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 140 [2019-11-07 01:35:47,546 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 139 [2019-11-07 01:35:48,068 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 139 [2019-11-07 01:35:49,742 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 35 [2019-11-07 01:35:56,967 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 387048 conjuctions. This might take some time...