/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:47:04,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:47:04,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:47:04,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:47:04,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:47:04,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:47:04,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:47:04,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:47:04,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:47:04,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:47:04,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:47:04,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:47:04,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:47:04,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:47:04,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:47:04,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:47:04,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:47:04,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:47:04,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:47:04,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:47:04,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:47:04,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:47:04,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:47:04,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:47:04,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 10:47:04,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:47:04,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:47:04,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:47:04,451 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 [2020-07-20 10:47:04,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:47:04,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:47:04,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:47:04,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:47:04,467 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:47:04,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:47:04,467 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:47:04,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:47:04,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:47:04,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:47:04,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:47:04,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:47:04,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:47:04,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:47:04,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:47:04,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:47:04,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:47:04,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:47:04,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:47:04,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:47:04,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:47:04,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:47:04,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:47:04,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:47:04,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:47:04,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:47:04,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:04,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:47:04,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:47:04,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 10:47:04,744 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:47:04,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:47:04,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:47:04,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:47:04,769 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:47:04,770 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci03.c [2020-07-20 10:47:04,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40659e560/b91436bd40b04ac68078721581537c2d/FLAGf4d3b8ecf [2020-07-20 10:47:05,330 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:47:05,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci03.c [2020-07-20 10:47:05,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40659e560/b91436bd40b04ac68078721581537c2d/FLAGf4d3b8ecf [2020-07-20 10:47:05,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40659e560/b91436bd40b04ac68078721581537c2d [2020-07-20 10:47:05,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:47:05,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:47:05,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:47:05,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:47:05,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:47:05,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:47:05" (1/1) ... [2020-07-20 10:47:05,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca3bae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:05, skipping insertion in model container [2020-07-20 10:47:05,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:47:05" (1/1) ... [2020-07-20 10:47:05,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:47:05,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:47:05,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:47:05,959 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:47:05,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:47:05,984 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:47:05,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:05 WrapperNode [2020-07-20 10:47:05,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:47:05,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:47:05,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:47:05,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:47:05,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:05" (1/1) ... [2020-07-20 10:47:05,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:05" (1/1) ... [2020-07-20 10:47:06,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:05" (1/1) ... [2020-07-20 10:47:06,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:05" (1/1) ... [2020-07-20 10:47:06,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:05" (1/1) ... [2020-07-20 10:47:06,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:05" (1/1) ... [2020-07-20 10:47:06,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:05" (1/1) ... [2020-07-20 10:47:06,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:47:06,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:47:06,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:47:06,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:47:06,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:05" (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 [2020-07-20 10:47:06,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:47:06,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:47:06,162 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-07-20 10:47:06,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:47:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:47:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 10:47:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-07-20 10:47:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:47:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:47:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:47:06,351 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:47:06,351 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 10:47:06,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:47:06 BoogieIcfgContainer [2020-07-20 10:47:06,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:47:06,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:47:06,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:47:06,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:47:06,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:47:05" (1/3) ... [2020-07-20 10:47:06,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac3e3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:47:06, skipping insertion in model container [2020-07-20 10:47:06,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:05" (2/3) ... [2020-07-20 10:47:06,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac3e3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:47:06, skipping insertion in model container [2020-07-20 10:47:06,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:47:06" (3/3) ... [2020-07-20 10:47:06,365 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2020-07-20 10:47:06,377 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:47:06,385 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:47:06,414 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:47:06,470 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:47:06,471 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:47:06,471 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:47:06,471 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:47:06,471 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:47:06,472 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:47:06,472 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:47:06,472 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:47:06,511 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-20 10:47:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 10:47:06,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:47:06,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:47:06,523 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:47:06,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:47:06,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1900973920, now seen corresponding path program 1 times [2020-07-20 10:47:06,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:47:06,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257658476] [2020-07-20 10:47:06,538 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:47:06,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 10:47:06,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:47:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:47:06,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:47:06,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257658476] [2020-07-20 10:47:06,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:47:06,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 10:47:06,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219085805] [2020-07-20 10:47:06,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 10:47:06,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:47:06,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 10:47:06,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:47:06,719 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-20 10:47:06,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:47:06,851 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-07-20 10:47:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 10:47:06,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-20 10:47:06,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:47:06,865 INFO L225 Difference]: With dead ends: 36 [2020-07-20 10:47:06,865 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 10:47:06,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:47:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 10:47:06,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-20 10:47:06,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 10:47:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-07-20 10:47:06,920 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2020-07-20 10:47:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:47:06,921 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-07-20 10:47:06,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 10:47:06,921 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-07-20 10:47:06,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 10:47:06,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:47:06,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:47:07,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:07,140 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:47:07,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:47:07,141 INFO L82 PathProgramCache]: Analyzing trace with hash -509871596, now seen corresponding path program 1 times [2020-07-20 10:47:07,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:47:07,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704087863] [2020-07-20 10:47:07,142 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:47:07,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 10:47:07,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:47:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:47:07,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:47:07,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704087863] [2020-07-20 10:47:07,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:47:07,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 10:47:07,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696402403] [2020-07-20 10:47:07,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 10:47:07,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:47:07,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 10:47:07,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:47:07,214 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 5 states. [2020-07-20 10:47:07,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:47:07,285 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2020-07-20 10:47:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 10:47:07,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-20 10:47:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:47:07,287 INFO L225 Difference]: With dead ends: 28 [2020-07-20 10:47:07,288 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 10:47:07,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:47:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 10:47:07,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-20 10:47:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 10:47:07,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-07-20 10:47:07,297 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-07-20 10:47:07,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:47:07,297 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-07-20 10:47:07,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 10:47:07,298 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-07-20 10:47:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 10:47:07,299 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:47:07,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:47:07,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:07,508 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:47:07,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:47:07,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1203666899, now seen corresponding path program 1 times [2020-07-20 10:47:07,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:47:07,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638896719] [2020-07-20 10:47:07,511 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:47:07,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 10:47:07,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:47:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 10:47:07,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:47:07,768 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:07,772 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 10:47:07,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638896719] [2020-07-20 10:47:07,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:47:07,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2020-07-20 10:47:07,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967667866] [2020-07-20 10:47:07,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 10:47:07,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:47:07,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 10:47:07,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-07-20 10:47:07,825 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 10 states. [2020-07-20 10:47:07,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:47:07,990 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2020-07-20 10:47:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 10:47:07,991 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-07-20 10:47:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:47:07,994 INFO L225 Difference]: With dead ends: 40 [2020-07-20 10:47:07,994 INFO L226 Difference]: Without dead ends: 34 [2020-07-20 10:47:07,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-07-20 10:47:07,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-20 10:47:08,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-20 10:47:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 10:47:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2020-07-20 10:47:08,020 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 27 [2020-07-20 10:47:08,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:47:08,021 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2020-07-20 10:47:08,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 10:47:08,021 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2020-07-20 10:47:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 10:47:08,027 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:47:08,028 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:47:08,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:08,242 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:47:08,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:47:08,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1554048393, now seen corresponding path program 1 times [2020-07-20 10:47:08,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:47:08,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949897550] [2020-07-20 10:47:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:47:08,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 10:47:08,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:47:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-07-20 10:47:08,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:47:08,594 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:08,595 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:08,642 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 10:47:08,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949897550] [2020-07-20 10:47:08,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:47:08,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2020-07-20 10:47:08,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84042729] [2020-07-20 10:47:08,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 10:47:08,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:47:08,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 10:47:08,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-07-20 10:47:08,685 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 12 states. [2020-07-20 10:47:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:47:08,892 INFO L93 Difference]: Finished difference Result 58 states and 115 transitions. [2020-07-20 10:47:08,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 10:47:08,894 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-07-20 10:47:08,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:47:08,900 INFO L225 Difference]: With dead ends: 58 [2020-07-20 10:47:08,901 INFO L226 Difference]: Without dead ends: 52 [2020-07-20 10:47:08,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 94 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-07-20 10:47:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-20 10:47:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 37. [2020-07-20 10:47:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 10:47:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2020-07-20 10:47:08,922 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 55 [2020-07-20 10:47:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:47:08,923 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2020-07-20 10:47:08,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 10:47:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2020-07-20 10:47:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 10:47:08,931 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:47:08,931 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:47:09,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:09,148 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:47:09,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:47:09,149 INFO L82 PathProgramCache]: Analyzing trace with hash 433565041, now seen corresponding path program 2 times [2020-07-20 10:47:09,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:47:09,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111073449] [2020-07-20 10:47:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:47:09,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 10:47:09,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:47:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 69 proven. 379 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2020-07-20 10:47:09,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:47:10,123 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:10,330 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:10,433 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:10,434 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:10,478 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:10,479 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 69 proven. 401 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2020-07-20 10:47:10,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111073449] [2020-07-20 10:47:10,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:47:10,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 16 [2020-07-20 10:47:10,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950117884] [2020-07-20 10:47:10,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 10:47:10,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:47:10,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 10:47:10,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-07-20 10:47:10,542 INFO L87 Difference]: Start difference. First operand 37 states and 59 transitions. Second operand 16 states. [2020-07-20 10:47:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:47:10,929 INFO L93 Difference]: Finished difference Result 73 states and 184 transitions. [2020-07-20 10:47:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 10:47:10,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-07-20 10:47:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:47:10,935 INFO L225 Difference]: With dead ends: 73 [2020-07-20 10:47:10,935 INFO L226 Difference]: Without dead ends: 67 [2020-07-20 10:47:10,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 291 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2020-07-20 10:47:10,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-20 10:47:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 47. [2020-07-20 10:47:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 10:47:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 91 transitions. [2020-07-20 10:47:10,956 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 91 transitions. Word has length 157 [2020-07-20 10:47:10,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:47:10,957 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 91 transitions. [2020-07-20 10:47:10,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 10:47:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 91 transitions. [2020-07-20 10:47:10,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-07-20 10:47:10,961 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:47:10,962 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 29, 17, 17, 17, 17, 17, 17, 17, 12, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:47:11,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:11,178 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:47:11,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:47:11,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1759711241, now seen corresponding path program 2 times [2020-07-20 10:47:11,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:47:11,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744470303] [2020-07-20 10:47:11,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:47:11,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 10:47:11,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:47:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 132 proven. 828 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2020-07-20 10:47:11,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:47:12,510 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:12,764 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:12,941 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:13,041 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:13,087 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:13,088 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 132 proven. 868 refuted. 0 times theorem prover too weak. 2330 trivial. 0 not checked. [2020-07-20 10:47:13,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744470303] [2020-07-20 10:47:13,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:47:13,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 18 [2020-07-20 10:47:13,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993599479] [2020-07-20 10:47:13,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 10:47:13,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:47:13,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 10:47:13,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-07-20 10:47:13,197 INFO L87 Difference]: Start difference. First operand 47 states and 91 transitions. Second operand 18 states. [2020-07-20 10:47:13,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:47:13,635 INFO L93 Difference]: Finished difference Result 88 states and 271 transitions. [2020-07-20 10:47:13,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 10:47:13,636 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 247 [2020-07-20 10:47:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:47:13,643 INFO L225 Difference]: With dead ends: 88 [2020-07-20 10:47:13,643 INFO L226 Difference]: Without dead ends: 82 [2020-07-20 10:47:13,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 466 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-07-20 10:47:13,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-20 10:47:13,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 52. [2020-07-20 10:47:13,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-20 10:47:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 110 transitions. [2020-07-20 10:47:13,685 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 110 transitions. Word has length 247 [2020-07-20 10:47:13,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:47:13,689 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 110 transitions. [2020-07-20 10:47:13,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 10:47:13,689 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 110 transitions. [2020-07-20 10:47:13,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1172 [2020-07-20 10:47:13,744 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:47:13,745 INFO L422 BasicCegarLoop]: trace histogram [179, 179, 90, 89, 89, 89, 89, 89, 89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:47:13,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:13,959 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:47:13,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:47:13,960 INFO L82 PathProgramCache]: Analyzing trace with hash 396575871, now seen corresponding path program 3 times [2020-07-20 10:47:13,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:47:13,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017527759] [2020-07-20 10:47:13,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:47:14,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2615 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 10:47:14,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:47:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 83304 backedges. 991 proven. 6102 refuted. 0 times theorem prover too weak. 76211 trivial. 0 not checked. [2020-07-20 10:47:15,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:47:18,753 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:19,782 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:20,516 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:20,916 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:20,917 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:21,101 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:21,102 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:21,185 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:21,185 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:21,228 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:21,229 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 83304 backedges. 991 proven. 6172 refuted. 0 times theorem prover too weak. 76141 trivial. 0 not checked. [2020-07-20 10:47:21,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017527759] [2020-07-20 10:47:21,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:47:21,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 22 [2020-07-20 10:47:21,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667856954] [2020-07-20 10:47:21,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 10:47:21,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:47:21,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 10:47:21,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2020-07-20 10:47:21,813 INFO L87 Difference]: Start difference. First operand 52 states and 110 transitions. Second operand 22 states. [2020-07-20 10:47:22,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:47:22,314 INFO L93 Difference]: Finished difference Result 103 states and 376 transitions. [2020-07-20 10:47:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 10:47:22,315 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1171 [2020-07-20 10:47:22,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:47:22,323 INFO L225 Difference]: With dead ends: 103 [2020-07-20 10:47:22,323 INFO L226 Difference]: Without dead ends: 97 [2020-07-20 10:47:22,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2351 GetRequests, 2307 SyntacticMatches, 15 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2020-07-20 10:47:22,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-20 10:47:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 62. [2020-07-20 10:47:22,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 10:47:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 154 transitions. [2020-07-20 10:47:22,346 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 154 transitions. Word has length 1171 [2020-07-20 10:47:22,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:47:22,348 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 154 transitions. [2020-07-20 10:47:22,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 10:47:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 154 transitions. [2020-07-20 10:47:22,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1498 [2020-07-20 10:47:22,365 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:47:22,365 INFO L422 BasicCegarLoop]: trace histogram [219, 219, 175, 109, 109, 109, 109, 109, 109, 109, 66, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:47:22,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:22,571 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:47:22,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:47:22,573 INFO L82 PathProgramCache]: Analyzing trace with hash 675253303, now seen corresponding path program 3 times [2020-07-20 10:47:22,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:47:22,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204976027] [2020-07-20 10:47:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:47:23,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 3327 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 10:47:23,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:47:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 134253 backedges. 25396 proven. 418 refuted. 0 times theorem prover too weak. 108439 trivial. 0 not checked. [2020-07-20 10:47:23,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:47:30,407 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:30,408 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:30,517 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:30,518 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:30,574 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:30,575 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:30,961 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:31,040 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:31,088 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 134253 backedges. 1686 proven. 11289 refuted. 0 times theorem prover too weak. 121278 trivial. 0 not checked. [2020-07-20 10:47:31,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204976027] [2020-07-20 10:47:31,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:47:31,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 21 [2020-07-20 10:47:31,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016973355] [2020-07-20 10:47:31,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 10:47:31,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:47:31,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 10:47:31,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-07-20 10:47:31,907 INFO L87 Difference]: Start difference. First operand 62 states and 154 transitions. Second operand 21 states. [2020-07-20 10:47:32,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:47:32,384 INFO L93 Difference]: Finished difference Result 135 states and 390 transitions. [2020-07-20 10:47:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 10:47:32,384 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 1497 [2020-07-20 10:47:32,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:47:32,387 INFO L225 Difference]: With dead ends: 135 [2020-07-20 10:47:32,387 INFO L226 Difference]: Without dead ends: 80 [2020-07-20 10:47:32,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3009 GetRequests, 2957 SyntacticMatches, 17 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 10:47:32,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-20 10:47:32,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-07-20 10:47:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-20 10:47:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 123 transitions. [2020-07-20 10:47:32,407 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 123 transitions. Word has length 1497 [2020-07-20 10:47:32,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:47:32,408 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 123 transitions. [2020-07-20 10:47:32,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 10:47:32,408 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 123 transitions. [2020-07-20 10:47:32,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2020-07-20 10:47:32,418 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:47:32,418 INFO L422 BasicCegarLoop]: trace histogram [131, 131, 106, 65, 65, 65, 65, 65, 65, 65, 41, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:47:32,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:32,633 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:47:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:47:32,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1726118483, now seen corresponding path program 4 times [2020-07-20 10:47:32,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:47:32,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286436] [2020-07-20 10:47:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:47:32,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 2001 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 10:47:32,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:47:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 47945 backedges. 23292 proven. 1601 refuted. 0 times theorem prover too weak. 23052 trivial. 0 not checked. [2020-07-20 10:47:33,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:47:38,187 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:38,443 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:38,600 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:38,601 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:38,690 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:38,691 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:38,746 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:38,748 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:39,674 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:39,926 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:39,927 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:40,083 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:40,182 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:40,233 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 47945 backedges. 1677 proven. 7547 refuted. 0 times theorem prover too weak. 38721 trivial. 0 not checked. [2020-07-20 10:47:40,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286436] [2020-07-20 10:47:40,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:47:40,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27] total 29 [2020-07-20 10:47:40,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315332063] [2020-07-20 10:47:40,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 10:47:40,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:47:40,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 10:47:40,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2020-07-20 10:47:40,629 INFO L87 Difference]: Start difference. First operand 80 states and 123 transitions. Second operand 29 states. [2020-07-20 10:47:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:47:41,720 INFO L93 Difference]: Finished difference Result 189 states and 388 transitions. [2020-07-20 10:47:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-20 10:47:41,721 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 900 [2020-07-20 10:47:41,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:47:41,724 INFO L225 Difference]: With dead ends: 189 [2020-07-20 10:47:41,724 INFO L226 Difference]: Without dead ends: 118 [2020-07-20 10:47:41,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1825 GetRequests, 1747 SyntacticMatches, 25 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=747, Invalid=2223, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 10:47:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-20 10:47:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 104. [2020-07-20 10:47:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-20 10:47:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 150 transitions. [2020-07-20 10:47:41,741 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 150 transitions. Word has length 900 [2020-07-20 10:47:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:47:41,742 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 150 transitions. [2020-07-20 10:47:41,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 10:47:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 150 transitions. [2020-07-20 10:47:41,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1200 [2020-07-20 10:47:41,754 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:47:41,755 INFO L422 BasicCegarLoop]: trace histogram [175, 175, 141, 87, 87, 87, 87, 87, 87, 87, 54, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:47:41,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:41,969 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:47:41,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:47:41,970 INFO L82 PathProgramCache]: Analyzing trace with hash 38151605, now seen corresponding path program 5 times [2020-07-20 10:47:41,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:47:41,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578005257] [2020-07-20 10:47:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:47:42,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2665 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-20 10:47:42,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:47:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 85734 backedges. 45147 proven. 4045 refuted. 0 times theorem prover too weak. 36542 trivial. 0 not checked. [2020-07-20 10:47:43,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:47:48,754 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:49,208 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:49,532 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:49,729 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:49,730 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:49,840 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:49,841 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:49,904 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:51,406 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:51,849 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:52,120 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:52,121 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:52,296 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:52,393 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:52,447 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:47:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 85734 backedges. 2722 proven. 11412 refuted. 0 times theorem prover too weak. 71600 trivial. 0 not checked. [2020-07-20 10:47:53,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578005257] [2020-07-20 10:47:53,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:47:53,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 31] total 33 [2020-07-20 10:47:53,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991992283] [2020-07-20 10:47:53,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-20 10:47:53,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:47:53,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-20 10:47:53,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 10:47:53,105 INFO L87 Difference]: Start difference. First operand 104 states and 150 transitions. Second operand 33 states. [2020-07-20 10:47:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:47:54,750 INFO L93 Difference]: Finished difference Result 226 states and 393 transitions. [2020-07-20 10:47:54,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-20 10:47:54,751 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1199 [2020-07-20 10:47:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:47:54,754 INFO L225 Difference]: With dead ends: 226 [2020-07-20 10:47:54,754 INFO L226 Difference]: Without dead ends: 131 [2020-07-20 10:47:54,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2428 GetRequests, 2337 SyntacticMatches, 29 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=987, Invalid=3045, Unknown=0, NotChecked=0, Total=4032 [2020-07-20 10:47:54,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-20 10:47:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2020-07-20 10:47:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-07-20 10:47:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 165 transitions. [2020-07-20 10:47:54,770 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 165 transitions. Word has length 1199 [2020-07-20 10:47:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:47:54,771 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 165 transitions. [2020-07-20 10:47:54,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-20 10:47:54,771 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 165 transitions. [2020-07-20 10:47:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2020-07-20 10:47:54,780 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:47:54,780 INFO L422 BasicCegarLoop]: trace histogram [135, 135, 109, 67, 67, 67, 67, 67, 67, 67, 42, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:47:54,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:54,994 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:47:54,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:47:54,995 INFO L82 PathProgramCache]: Analyzing trace with hash -622714639, now seen corresponding path program 6 times [2020-07-20 10:47:54,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:47:54,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61711161] [2020-07-20 10:47:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:47:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:47:55,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-20 10:47:55,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:47:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 3785 proven. 7472 refuted. 0 times theorem prover too weak. 39653 trivial. 0 not checked. [2020-07-20 10:47:56,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:48:00,005 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:00,006 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:00,745 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:00,746 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:01,207 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:01,487 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:01,660 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:01,764 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:01,824 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:01,825 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:04,411 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:04,413 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:05,157 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:05,158 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:05,617 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:05,891 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:06,069 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:06,069 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:06,177 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:06,239 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:48:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 3785 proven. 7619 refuted. 0 times theorem prover too weak. 39506 trivial. 0 not checked. [2020-07-20 10:48:06,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61711161] [2020-07-20 10:48:06,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:48:06,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 35] total 37 [2020-07-20 10:48:06,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613351375] [2020-07-20 10:48:06,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-20 10:48:06,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:48:06,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-20 10:48:06,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1117, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 10:48:06,714 INFO L87 Difference]: Start difference. First operand 116 states and 165 transitions. Second operand 37 states. [2020-07-20 10:48:08,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:48:08,439 INFO L93 Difference]: Finished difference Result 259 states and 447 transitions. [2020-07-20 10:48:08,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-20 10:48:08,440 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 927 [2020-07-20 10:48:08,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:48:08,447 INFO L225 Difference]: With dead ends: 259 [2020-07-20 10:48:08,447 INFO L226 Difference]: Without dead ends: 152 [2020-07-20 10:48:08,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1889 GetRequests, 1785 SyntacticMatches, 33 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1259, Invalid=3997, Unknown=0, NotChecked=0, Total=5256 [2020-07-20 10:48:08,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-07-20 10:48:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2020-07-20 10:48:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-07-20 10:48:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 187 transitions. [2020-07-20 10:48:08,472 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 187 transitions. Word has length 927 [2020-07-20 10:48:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:48:08,473 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 187 transitions. [2020-07-20 10:48:08,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-20 10:48:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 187 transitions. [2020-07-20 10:48:08,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2020-07-20 10:48:08,479 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:48:08,480 INFO L422 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:48:08,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:48:08,691 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:48:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:48:08,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1020040988, now seen corresponding path program 7 times [2020-07-20 10:48:08,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:48:08,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385159175] [2020-07-20 10:48:08,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:48:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:48:09,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 220 conjunts are in the unsatisfiable core [2020-07-20 10:48:09,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:48:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-07-20 10:48:10,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:48:11,788 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:48:11,983 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:48:12,196 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:48:12,399 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:48:13,813 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 10:48:14,259 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 10:48:14,716 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 10:48:15,159 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 10:48:16,083 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:48:16,797 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:48:16,980 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:48:17,184 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:48:17,412 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:48:18,479 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 302 [2020-07-20 10:48:19,476 WARN L193 SmtUtils]: Spent 991.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2020-07-20 10:48:20,497 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 304 [2020-07-20 10:48:21,518 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 304 [2020-07-20 10:48:22,460 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:48:22,563 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:48:23,258 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:48:23,461 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:48:23,686 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:48:23,908 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:48:24,844 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:48:24,947 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:48:25,388 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 10:48:25,818 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 10:48:26,273 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 10:48:26,758 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 10:48:29,409 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification that was a NOOP. DAG size: 491 [2020-07-20 10:48:31,979 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification that was a NOOP. DAG size: 491 [2020-07-20 10:48:34,567 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification that was a NOOP. DAG size: 493 [2020-07-20 10:48:37,378 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification that was a NOOP. DAG size: 493 [2020-07-20 10:48:38,594 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:48:38,720 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:48:38,855 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:48:38,985 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:48:39,813 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:48:40,031 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:48:40,267 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:48:40,499 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:48:41,435 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:48:41,563 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:48:41,693 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:48:41,824 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:48:42,362 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 10:48:42,913 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 10:48:43,471 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 10:48:43,999 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 10:48:44,572 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-07-20 10:48:45,122 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-07-20 10:48:45,660 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-07-20 10:48:46,151 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-07-20 10:48:46,676 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-07-20 10:48:47,197 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-07-20 10:48:47,707 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2020-07-20 10:48:48,205 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-07-20 10:48:48,762 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-07-20 10:48:49,250 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-07-20 10:48:49,735 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-07-20 10:48:50,199 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-07-20 10:48:50,661 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-07-20 10:48:51,125 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-07-20 10:48:51,566 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-07-20 10:48:52,010 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-07-20 10:48:52,454 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-07-20 10:48:52,898 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-07-20 10:48:53,319 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-07-20 10:48:53,730 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-20 10:48:54,161 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-20 10:48:54,566 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-20 10:48:54,952 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 10:48:55,329 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 10:48:55,699 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-07-20 10:48:56,055 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-07-20 10:48:56,410 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-07-20 10:48:56,777 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-07-20 10:48:57,124 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-07-20 10:48:57,449 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-07-20 10:48:57,790 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-07-20 10:48:58,107 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-07-20 10:48:58,380 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-07-20 10:48:58,656 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-07-20 10:48:58,972 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-07-20 10:48:59,245 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-07-20 10:48:59,501 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-07-20 10:48:59,786 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-07-20 10:49:00,061 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-07-20 10:49:00,327 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-07-20 10:49:00,596 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-07-20 10:49:00,846 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-07-20 10:49:01,092 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-07-20 10:49:01,322 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-07-20 10:49:01,545 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:49:01,757 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-07-20 10:49:01,974 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-20 10:49:02,184 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-07-20 10:49:02,388 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-20 10:49:02,583 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-07-20 10:49:02,776 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-20 10:49:02,958 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-07-20 10:49:03,131 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-07-20 10:49:03,300 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-07-20 10:49:03,453 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-07-20 10:49:03,602 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-07-20 10:49:03,741 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-07-20 10:49:03,858 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-07-20 10:49:04,072 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-07-20 10:49:04,200 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:04,318 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-07-20 10:49:04,422 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-07-20 10:49:04,613 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-07-20 10:49:06,952 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:07,122 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:07,300 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:07,472 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:07,633 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-07-20 10:49:07,791 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-20 10:49:07,951 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-07-20 10:49:08,107 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-07-20 10:49:08,257 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-07-20 10:49:08,380 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-07-20 10:49:08,494 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-07-20 10:49:08,610 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-07-20 10:49:08,722 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:08,828 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-07-20 10:49:14,542 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:14,711 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:14,887 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:15,062 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:16,381 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:49:16,709 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:49:17,040 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:49:17,381 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:49:21,726 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:21,895 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:22,076 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:22,255 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:24,182 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:26,493 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:49:26,694 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:27,428 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:27,603 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:27,784 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:27,966 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:28,853 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:28,955 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:29,299 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:49:29,592 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:49:29,928 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:49:30,219 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:49:31,219 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:31,854 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:32,028 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:32,218 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:32,405 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:33,141 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 10:49:33,818 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 10:49:34,519 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 10:49:35,211 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 10:49:36,221 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:36,331 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:37,011 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:37,191 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:37,382 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:37,575 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:38,585 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:38,691 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:39,047 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:49:39,400 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:49:39,767 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:49:40,135 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:49:41,592 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 302 [2020-07-20 10:49:42,959 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 302 [2020-07-20 10:49:44,503 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 304 [2020-07-20 10:49:46,071 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 304 [2020-07-20 10:49:47,248 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:49:47,353 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:49:47,467 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:47,583 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:48,332 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:48,526 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:49:48,740 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:48,940 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:49:49,839 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:49:49,952 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:49:50,070 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:50,189 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:49:50,568 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:49:50,938 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:49:51,328 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:49:51,719 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:49:52,140 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-07-20 10:49:52,553 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-07-20 10:49:52,997 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-07-20 10:49:53,361 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-07-20 10:49:53,729 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-07-20 10:49:54,063 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-07-20 10:49:54,397 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-07-20 10:49:54,684 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-07-20 10:49:54,964 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-07-20 10:49:55,280 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-07-20 10:49:55,583 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-07-20 10:49:55,875 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-07-20 10:49:56,151 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-07-20 10:49:56,430 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-07-20 10:49:56,697 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:49:56,956 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-20 10:49:57,205 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-07-20 10:49:57,429 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-07-20 10:49:57,654 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-20 10:49:57,871 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-07-20 10:49:58,075 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-07-20 10:49:58,280 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-07-20 10:49:58,471 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-07-20 10:49:58,659 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-07-20 10:49:58,842 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-07-20 10:49:59,020 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-07-20 10:49:59,192 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-07-20 10:49:59,352 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-07-20 10:49:59,505 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-07-20 10:49:59,654 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-07-20 10:49:59,794 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-07-20 10:49:59,925 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-07-20 10:50:00,046 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-07-20 10:50:00,164 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-07-20 10:50:00,270 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-07-20 10:50:00,377 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-20 10:50:01,918 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:02,038 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:02,172 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:02,303 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:02,436 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-07-20 10:50:02,560 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-07-20 10:50:02,672 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-07-20 10:50:02,778 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-07-20 10:50:05,914 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:06,762 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:06,932 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:07,112 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:07,327 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:09,508 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:09,623 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:09,746 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:09,878 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:12,469 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:12,587 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:12,714 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:12,840 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:13,638 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:13,851 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:14,074 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:14,293 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:15,301 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:15,420 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:15,547 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:15,679 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:16,086 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:50:16,487 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:50:16,904 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:50:17,316 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:50:18,334 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:18,455 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:18,582 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:18,707 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:19,508 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:19,731 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:19,950 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:20,136 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:20,798 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 10:50:21,539 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 10:50:22,339 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 10:50:23,197 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 10:50:24,295 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:24,419 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:24,546 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:24,674 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:25,523 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:25,741 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:25,972 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:26,200 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:26,439 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-07-20 10:50:26,662 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-20 10:50:26,878 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-07-20 10:50:27,081 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-07-20 10:50:27,279 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-07-20 10:50:27,467 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-07-20 10:50:27,641 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-07-20 10:50:27,808 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-07-20 10:50:27,970 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-07-20 10:50:28,127 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-07-20 10:50:28,267 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-07-20 10:50:28,404 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-07-20 10:50:28,532 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-07-20 10:50:28,654 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-07-20 10:50:28,773 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-07-20 10:50:28,885 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-07-20 10:50:31,822 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:31,950 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:32,085 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:32,223 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:35,171 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:35,299 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:35,437 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:35,573 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:36,246 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:36,420 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:36,605 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:36,799 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:37,818 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:37,938 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:38,071 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:38,201 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:38,532 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:50:38,950 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 10:50:39,377 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:50:39,811 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 10:50:40,960 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:41,088 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:41,233 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:41,370 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:41,510 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-07-20 10:50:41,640 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-07-20 10:50:41,766 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-07-20 10:50:41,882 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-07-20 10:50:41,991 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-20 10:50:42,093 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-07-20 10:50:45,306 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:45,435 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 10:50:45,577 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:45,717 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:46,615 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:46,847 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 10:50:47,093 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:47,333 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 10:50:50,035 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:50,144 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 10:50:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-07-20 10:50:52,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385159175] [2020-07-20 10:50:52,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:50:52,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2020-07-20 10:50:52,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038495335] [2020-07-20 10:50:52,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-20 10:50:52,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:50:52,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-20 10:50:52,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2020-07-20 10:50:52,100 INFO L87 Difference]: Start difference. First operand 130 states and 187 transitions. Second operand 36 states. [2020-07-20 10:50:53,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:50:53,104 INFO L93 Difference]: Finished difference Result 131 states and 188 transitions. [2020-07-20 10:50:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-20 10:50:53,110 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 750 [2020-07-20 10:50:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:50:53,111 INFO L225 Difference]: With dead ends: 131 [2020-07-20 10:50:53,111 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 10:50:53,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1301 SyntacticMatches, 164 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3509 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=271, Invalid=1061, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 10:50:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 10:50:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 10:50:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 10:50:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 10:50:53,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 750 [2020-07-20 10:50:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:50:53,114 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 10:50:53,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-20 10:50:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 10:50:53,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 10:50:53,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:50:53,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 10:50:55,254 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 8 [2020-07-20 10:50:55,423 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 1 [2020-07-20 10:50:58,499 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 130 DAG size of output: 50 [2020-07-20 10:50:58,506 INFO L268 CegarLoopResult]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2020-07-20 10:50:58,507 INFO L271 CegarLoopResult]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2020-07-20 10:50:58,507 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= |fibonacci_#in~n| fibonacci_~n) (<= 2 |fibonacci_#in~n|) (<= fibonacci_~n |fibonacci_#in~n|)) [2020-07-20 10:50:58,507 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-07-20 10:50:58,508 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (<= 5 |fibonacci_#in~n|))) (and (<= 1 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| fibonacci_~n) (let ((.cse1 (<= 8 |fibonacci_#in~n|))) (or (and (<= |fibonacci_#in~n| 5) .cse0) (and (<= 3 |fibonacci_#in~n|) (<= |fibonacci_#in~n| 3)) (and .cse1 (<= 21 |fibonacci_#t~ret0|)) (and (<= 2 |fibonacci_#in~n|) (<= |fibonacci_#in~n| 2)) (and (<= 8 |fibonacci_#t~ret0|) (<= fibonacci_~n 7) (<= 7 |fibonacci_#in~n|)) (and (< |fibonacci_#in~n| 9) .cse1 (<= 13 |fibonacci_#t~ret0|)) (and (<= 2 |fibonacci_#t~ret0|) (<= 4 |fibonacci_#in~n|) (<= |fibonacci_#in~n| 4)) (and (<= 5 |fibonacci_#t~ret0|) (<= 6 |fibonacci_#in~n|) (<= |fibonacci_#in~n| 6)))) (or (not .cse0) (<= 3 |fibonacci_#t~ret0|)) (<= fibonacci_~n |fibonacci_#in~n|))) [2020-07-20 10:50:58,508 INFO L268 CegarLoopResult]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2020-07-20 10:50:58,508 INFO L268 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-07-20 10:50:58,508 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-07-20 10:50:58,508 INFO L268 CegarLoopResult]: For program point L15(lines 15 21) no Hoare annotation was computed. [2020-07-20 10:50:58,509 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 10:50:58,509 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 10:50:58,509 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 10:50:58,509 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 10:50:58,509 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 10:50:58,509 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 10:50:58,510 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-07-20 10:50:58,510 INFO L268 CegarLoopResult]: For program point L31(lines 31 35) no Hoare annotation was computed. [2020-07-20 10:50:58,510 INFO L271 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-07-20 10:50:58,510 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true [2020-07-20 10:50:58,510 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-07-20 10:50:58,510 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-07-20 10:50:58,510 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 36) no Hoare annotation was computed. [2020-07-20 10:50:58,510 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 36) no Hoare annotation was computed. [2020-07-20 10:50:58,510 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 10:50:58,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:50:58 BoogieIcfgContainer [2020-07-20 10:50:58,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:50:58,520 INFO L168 Benchmark]: Toolchain (without parser) took 232805.86 ms. Allocated memory was 138.9 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 102.6 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 693.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:50:58,520 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 10:50:58,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.15 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 92.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:50:58,521 INFO L168 Benchmark]: Boogie Preprocessor took 24.62 ms. Allocated memory is still 138.9 MB. Free memory was 92.8 MB in the beginning and 91.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 10:50:58,521 INFO L168 Benchmark]: RCFGBuilder took 345.43 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 91.4 MB in the beginning and 170.8 MB in the end (delta: -79.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 10:50:58,522 INFO L168 Benchmark]: TraceAbstraction took 232161.05 ms. Allocated memory was 202.9 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 170.2 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 696.9 MB. Max. memory is 7.1 GB. [2020-07-20 10:50:58,523 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.15 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 92.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.62 ms. Allocated memory is still 138.9 MB. Free memory was 92.8 MB in the beginning and 91.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 345.43 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 91.4 MB in the beginning and 170.8 MB in the end (delta: -79.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232161.05 ms. Allocated memory was 202.9 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 170.2 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 696.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 226.8s, OverallIterations: 12, TraceHistogramMax: 219, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 1733 SDslu, 1745 SDs, 0 SdLazy, 2552 SolverSat, 3055 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14022 GetRequests, 13350 SyntacticMatches, 311 SemanticMatches, 361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7049 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 155 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 254 PreInvPairs, 375 NumberOfFragments, 103 HoareAnnotationTreeSize, 254 FomulaSimplifications, 7919 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2891 FormulaSimplificationTreeSizeReductionInter, 3.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 212.9s InterpolantComputationTime, 6959 NumberOfCodeBlocks, 6959 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 13867 ConstructedInterpolants, 0 QuantifiedInterpolants, 18863731 SizeOfPredicates, 96 NumberOfNonLiveVariables, 15499 ConjunctsInSsa, 394 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 803801/879954 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...