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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:43:31,283 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-15 01:43:31,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:43:31,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:43:31,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:43:31,372 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 [2019-10-15 01:43:31,408 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:43:31,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:43:31,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:43:31,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:43:31,410 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:43:31,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:43:31,410 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:43:31,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:43:31,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:43:31,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:43:31,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:43:31,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:43:31,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:43:31,412 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:43:31,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:43:31,412 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:43:31,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:43:31,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:43:31,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:43:31,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:43:31,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:43:31,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:43:31,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:43:31,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:43:31,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:43:31,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:43:31,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:43:31,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:43:31,417 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 [2019-10-15 01:43:31,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:43:31,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:43:31,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:43:31,719 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:43:31,720 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:43:31,721 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label22.c [2019-10-15 01:43:31,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ed212f0/1ecf4d8d8d274c739eab1ed2d6a8d7b4/FLAG459ebee5a [2019-10-15 01:43:32,485 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:43:32,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label22.c [2019-10-15 01:43:32,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ed212f0/1ecf4d8d8d274c739eab1ed2d6a8d7b4/FLAG459ebee5a [2019-10-15 01:43:32,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ed212f0/1ecf4d8d8d274c739eab1ed2d6a8d7b4 [2019-10-15 01:43:32,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:43:32,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:43:32,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:43:32,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:43:32,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:43:32,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:32" (1/1) ... [2019-10-15 01:43:32,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1056708f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:32, skipping insertion in model container [2019-10-15 01:43:32,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:32" (1/1) ... [2019-10-15 01:43:32,686 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:43:32,773 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:43:33,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:43:33,585 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:43:33,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:43:33,845 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:43:33,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:33 WrapperNode [2019-10-15 01:43:33,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:43:33,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:43:33,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:43:33,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:43:33,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:33" (1/1) ... [2019-10-15 01:43:33,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:33" (1/1) ... [2019-10-15 01:43:33,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:33" (1/1) ... [2019-10-15 01:43:33,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:33" (1/1) ... [2019-10-15 01:43:34,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:33" (1/1) ... [2019-10-15 01:43:34,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:33" (1/1) ... [2019-10-15 01:43:34,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:33" (1/1) ... [2019-10-15 01:43:34,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:43:34,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:43:34,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:43:34,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:43:34,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:33" (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 [2019-10-15 01:43:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:43:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:43:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:43:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:43:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:43:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:43:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:43:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:43:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:43:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:43:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:43:37,076 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:43:37,076 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:43:37,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:43:37 BoogieIcfgContainer [2019-10-15 01:43:37,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:43:37,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:43:37,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:43:37,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:43:37,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:43:32" (1/3) ... [2019-10-15 01:43:37,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5584ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:43:37, skipping insertion in model container [2019-10-15 01:43:37,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:33" (2/3) ... [2019-10-15 01:43:37,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5584ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:43:37, skipping insertion in model container [2019-10-15 01:43:37,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:43:37" (3/3) ... [2019-10-15 01:43:37,087 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label22.c [2019-10-15 01:43:37,098 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:43:37,108 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:43:37,120 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:43:37,149 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:43:37,149 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:43:37,150 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:43:37,150 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:43:37,150 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:43:37,150 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:43:37,150 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:43:37,150 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:43:37,173 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-15 01:43:37,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:43:37,188 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:37,189 INFO L380 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] [2019-10-15 01:43:37,191 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:37,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:37,198 INFO L82 PathProgramCache]: Analyzing trace with hash 136469798, now seen corresponding path program 1 times [2019-10-15 01:43:37,208 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:37,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266707522] [2019-10-15 01:43:37,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:37,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:37,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:37,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266707522] [2019-10-15 01:43:37,925 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:37,926 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:43:37,926 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632381113] [2019-10-15 01:43:37,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:43:37,934 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:37,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:43:37,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:37,951 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-10-15 01:43:39,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:39,020 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-10-15 01:43:39,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:43:39,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 01:43:39,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:39,038 INFO L225 Difference]: With dead ends: 462 [2019-10-15 01:43:39,038 INFO L226 Difference]: Without dead ends: 301 [2019-10-15 01:43:39,043 INFO L600 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 [2019-10-15 01:43:39,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-15 01:43:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-10-15 01:43:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-15 01:43:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 564 transitions. [2019-10-15 01:43:39,116 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 564 transitions. Word has length 149 [2019-10-15 01:43:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:39,118 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 564 transitions. [2019-10-15 01:43:39,118 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:43:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 564 transitions. [2019-10-15 01:43:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:43:39,123 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:39,124 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:43:39,124 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:39,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash 558839741, now seen corresponding path program 1 times [2019-10-15 01:43:39,125 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:39,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135838699] [2019-10-15 01:43:39,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:39,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:39,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:39,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135838699] [2019-10-15 01:43:39,336 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:39,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:43:39,337 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88912025] [2019-10-15 01:43:39,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:43:39,340 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:39,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:43:39,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:43:39,340 INFO L87 Difference]: Start difference. First operand 301 states and 564 transitions. Second operand 6 states. [2019-10-15 01:43:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:40,765 INFO L93 Difference]: Finished difference Result 929 states and 1794 transitions. [2019-10-15 01:43:40,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:43:40,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2019-10-15 01:43:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:40,773 INFO L225 Difference]: With dead ends: 929 [2019-10-15 01:43:40,773 INFO L226 Difference]: Without dead ends: 633 [2019-10-15 01:43:40,777 INFO L600 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 [2019-10-15 01:43:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-15 01:43:40,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 603. [2019-10-15 01:43:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:43:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1113 transitions. [2019-10-15 01:43:40,853 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1113 transitions. Word has length 158 [2019-10-15 01:43:40,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:40,853 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 1113 transitions. [2019-10-15 01:43:40,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:43:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1113 transitions. [2019-10-15 01:43:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:43:40,859 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:40,859 INFO L380 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] [2019-10-15 01:43:40,859 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:40,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1532432110, now seen corresponding path program 1 times [2019-10-15 01:43:40,860 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:40,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813541285] [2019-10-15 01:43:40,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:40,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:40,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:41,094 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813541285] [2019-10-15 01:43:41,095 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:41,095 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:43:41,095 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72783222] [2019-10-15 01:43:41,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:43:41,097 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:41,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:43:41,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:41,102 INFO L87 Difference]: Start difference. First operand 603 states and 1113 transitions. Second operand 3 states. [2019-10-15 01:43:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:42,140 INFO L93 Difference]: Finished difference Result 1793 states and 3375 transitions. [2019-10-15 01:43:42,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:43:42,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:43:42,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:42,150 INFO L225 Difference]: With dead ends: 1793 [2019-10-15 01:43:42,150 INFO L226 Difference]: Without dead ends: 1195 [2019-10-15 01:43:42,153 INFO L600 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 [2019-10-15 01:43:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2019-10-15 01:43:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2019-10-15 01:43:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2019-10-15 01:43:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2084 transitions. [2019-10-15 01:43:42,216 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2084 transitions. Word has length 161 [2019-10-15 01:43:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:42,217 INFO L462 AbstractCegarLoop]: Abstraction has 1195 states and 2084 transitions. [2019-10-15 01:43:42,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:43:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2084 transitions. [2019-10-15 01:43:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 01:43:42,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:42,226 INFO L380 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, 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] [2019-10-15 01:43:42,226 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:42,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:42,227 INFO L82 PathProgramCache]: Analyzing trace with hash -627084125, now seen corresponding path program 1 times [2019-10-15 01:43:42,227 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:42,228 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641816560] [2019-10-15 01:43:42,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:42,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:42,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:42,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641816560] [2019-10-15 01:43:42,530 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:42,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:43:42,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700827777] [2019-10-15 01:43:42,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:43:42,531 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:42,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:43:42,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:42,532 INFO L87 Difference]: Start difference. First operand 1195 states and 2084 transitions. Second operand 3 states. [2019-10-15 01:43:43,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:43,406 INFO L93 Difference]: Finished difference Result 3571 states and 6400 transitions. [2019-10-15 01:43:43,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:43:43,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-10-15 01:43:43,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:43,430 INFO L225 Difference]: With dead ends: 3571 [2019-10-15 01:43:43,431 INFO L226 Difference]: Without dead ends: 2381 [2019-10-15 01:43:43,435 INFO L600 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 [2019-10-15 01:43:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2019-10-15 01:43:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2381. [2019-10-15 01:43:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2019-10-15 01:43:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 4191 transitions. [2019-10-15 01:43:43,518 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 4191 transitions. Word has length 181 [2019-10-15 01:43:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:43,518 INFO L462 AbstractCegarLoop]: Abstraction has 2381 states and 4191 transitions. [2019-10-15 01:43:43,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:43:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 4191 transitions. [2019-10-15 01:43:43,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-15 01:43:43,530 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:43,531 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:43:43,531 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:43,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:43,532 INFO L82 PathProgramCache]: Analyzing trace with hash 188197188, now seen corresponding path program 1 times [2019-10-15 01:43:43,532 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:43,533 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305254814] [2019-10-15 01:43:43,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:43,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:43,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 82 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:43:43,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305254814] [2019-10-15 01:43:43,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553698035] [2019-10-15 01:43:43,759 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 [2019-10-15 01:43:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:43,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:43:44,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:43:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 01:43:44,170 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:43:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 82 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:43:44,298 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:43:44,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-15 01:43:44,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288387417] [2019-10-15 01:43:44,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:43:44,300 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:44,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:43:44,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:43:44,301 INFO L87 Difference]: Start difference. First operand 2381 states and 4191 transitions. Second operand 5 states. [2019-10-15 01:43:45,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:45,603 INFO L93 Difference]: Finished difference Result 6967 states and 13483 transitions. [2019-10-15 01:43:45,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:43:45,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2019-10-15 01:43:45,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:45,640 INFO L225 Difference]: With dead ends: 6967 [2019-10-15 01:43:45,641 INFO L226 Difference]: Without dead ends: 4591 [2019-10-15 01:43:45,650 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 469 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:43:45,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4591 states. [2019-10-15 01:43:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 4527. [2019-10-15 01:43:45,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4527 states. [2019-10-15 01:43:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4527 states to 4527 states and 7991 transitions. [2019-10-15 01:43:45,814 INFO L78 Accepts]: Start accepts. Automaton has 4527 states and 7991 transitions. Word has length 237 [2019-10-15 01:43:45,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:45,815 INFO L462 AbstractCegarLoop]: Abstraction has 4527 states and 7991 transitions. [2019-10-15 01:43:45,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:43:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4527 states and 7991 transitions. [2019-10-15 01:43:45,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-15 01:43:45,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:45,837 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:43:46,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:43:46,042 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:46,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1363875243, now seen corresponding path program 1 times [2019-10-15 01:43:46,043 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:46,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62337532] [2019-10-15 01:43:46,044 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:46,044 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:46,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:46,413 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62337532] [2019-10-15 01:43:46,413 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280787246] [2019-10-15 01:43:46,414 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 [2019-10-15 01:43:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:46,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:43:46,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:43:46,703 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 01:43:46,704 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:43:46,947 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2019-10-15 01:43:47,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,017 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,032 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,032 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,052 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 83 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:43:47,157 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:43:47,157 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-15 01:43:47,158 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051739997] [2019-10-15 01:43:47,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:43:47,159 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:47,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:43:47,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:43:47,159 INFO L87 Difference]: Start difference. First operand 4527 states and 7991 transitions. Second operand 5 states. [2019-10-15 01:43:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:48,483 INFO L93 Difference]: Finished difference Result 11335 states and 20858 transitions. [2019-10-15 01:43:48,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:43:48,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2019-10-15 01:43:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:48,534 INFO L225 Difference]: With dead ends: 11335 [2019-10-15 01:43:48,534 INFO L226 Difference]: Without dead ends: 6813 [2019-10-15 01:43:48,554 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:43:48,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6813 states. [2019-10-15 01:43:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6813 to 6761. [2019-10-15 01:43:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6761 states. [2019-10-15 01:43:48,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 11040 transitions. [2019-10-15 01:43:48,772 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 11040 transitions. Word has length 238 [2019-10-15 01:43:48,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:48,773 INFO L462 AbstractCegarLoop]: Abstraction has 6761 states and 11040 transitions. [2019-10-15 01:43:48,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:43:48,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 11040 transitions. [2019-10-15 01:43:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-15 01:43:48,801 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:48,802 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:43:49,011 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:43:49,012 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:49,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:49,013 INFO L82 PathProgramCache]: Analyzing trace with hash 715321556, now seen corresponding path program 1 times [2019-10-15 01:43:49,013 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:49,014 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879416810] [2019-10-15 01:43:49,014 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:49,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:49,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:49,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879416810] [2019-10-15 01:43:49,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435562103] [2019-10-15 01:43:49,286 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 [2019-10-15 01:43:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:49,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 01:43:49,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:43:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:49,700 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:43:49,934 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2019-10-15 01:43:49,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:49,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:49,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:49,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:49,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:49,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:49,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:49,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:49,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:43:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:50,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1273426370] [2019-10-15 01:43:50,226 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-15 01:43:50,226 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:43:50,232 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:43:50,241 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:43:50,242 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:43:50,612 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-15 01:43:51,149 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 210 for LOIs [2019-10-15 01:43:51,421 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-15 01:43:51,741 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-15 01:43:51,971 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2019-10-15 01:43:52,076 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-15 01:43:53,750 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 302 [2019-10-15 01:43:54,077 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 223 [2019-10-15 01:43:54,866 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 223 [2019-10-15 01:43:56,156 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 227 [2019-10-15 01:43:56,828 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 259 [2019-10-15 01:43:57,338 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:43:57,444 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:43:57,644 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 371 [2019-10-15 01:43:57,791 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2019-10-15 01:43:57,898 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2019-10-15 01:43:58,083 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 372 [2019-10-15 01:43:58,812 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 261 [2019-10-15 01:43:59,265 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 259 [2019-10-15 01:43:59,645 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2019-10-15 01:43:59,788 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2019-10-15 01:43:59,917 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 227 [2019-10-15 01:44:00,216 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 261 [2019-10-15 01:44:00,454 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 259 [2019-10-15 01:44:00,958 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 371 [2019-10-15 01:44:01,061 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:01,221 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 370 [2019-10-15 01:44:01,394 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2019-10-15 01:44:01,555 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 371 [2019-10-15 01:44:01,673 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2019-10-15 01:44:02,101 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 261 [2019-10-15 01:44:02,557 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 257 [2019-10-15 01:44:03,030 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 227 [2019-10-15 01:44:04,054 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 370 [2019-10-15 01:44:04,169 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:04,340 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 370 [2019-10-15 01:44:04,569 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 246