java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/vogal-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 11:31:47,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 11:31:47,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 11:31:47,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 11:31:47,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 11:31:47,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 11:31:47,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 11:31:47,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 11:31:47,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 11:31:47,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 11:31:47,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 11:31:47,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 11:31:47,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 11:31:47,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 11:31:47,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 11:31:47,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 11:31:47,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 11:31:47,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 11:31:47,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 11:31:47,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 11:31:47,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 11:31:47,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 11:31:47,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 11:31:47,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 11:31:47,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 11:31:47,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 11:31:47,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 11:31:47,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 11:31:47,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-05 11:31:47,897 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 11:31:47,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 11:31:47,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-05 11:31:47,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-05 11:31:47,899 INFO L138 SettingsManager]: * Use SBE=true [2019-09-05 11:31:47,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 11:31:47,900 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 11:31:47,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-05 11:31:47,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 11:31:47,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 11:31:47,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 11:31:47,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 11:31:47,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 11:31:47,901 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 11:31:47,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 11:31:47,901 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-05 11:31:47,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 11:31:47,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 11:31:47,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 11:31:47,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-05 11:31:47,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-05 11:31:47,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 11:31:47,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 11:31:47,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 11:31:47,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-05 11:31:47,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-05 11:31:47,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 11:31:47,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 11:31:47,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-05 11:31:47,931 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 11:31:47,942 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 11:31:47,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 11:31:47,947 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 11:31:47,948 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 11:31:47,949 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/vogal-2.i [2019-09-05 11:31:48,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f2e48046/2afb20b09a1544b7b1e4413ee565dff3/FLAG70b4d8478 [2019-09-05 11:31:48,455 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 11:31:48,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-2.i [2019-09-05 11:31:48,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f2e48046/2afb20b09a1544b7b1e4413ee565dff3/FLAG70b4d8478 [2019-09-05 11:31:48,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f2e48046/2afb20b09a1544b7b1e4413ee565dff3 [2019-09-05 11:31:48,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 11:31:48,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 11:31:48,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 11:31:48,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 11:31:48,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 11:31:48,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 11:31:48" (1/1) ... [2019-09-05 11:31:48,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e607a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:31:48, skipping insertion in model container [2019-09-05 11:31:48,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 11:31:48" (1/1) ... [2019-09-05 11:31:48,873 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 11:31:48,888 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 11:31:49,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 11:31:49,059 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 11:31:49,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 11:31:49,214 INFO L192 MainTranslator]: Completed translation [2019-09-05 11:31:49,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:31:49 WrapperNode [2019-09-05 11:31:49,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 11:31:49,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 11:31:49,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 11:31:49,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 11:31:49,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:31:49" (1/1) ... [2019-09-05 11:31:49,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:31:49" (1/1) ... [2019-09-05 11:31:49,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:31:49" (1/1) ... [2019-09-05 11:31:49,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:31:49" (1/1) ... [2019-09-05 11:31:49,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:31:49" (1/1) ... [2019-09-05 11:31:49,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:31:49" (1/1) ... [2019-09-05 11:31:49,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:31:49" (1/1) ... [2019-09-05 11:31:49,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 11:31:49,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 11:31:49,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 11:31:49,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 11:31:49,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:31:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 11:31:49,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 11:31:49,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 11:31:49,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 11:31:49,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 11:31:49,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 11:31:49,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 11:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-05 11:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 11:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-05 11:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-05 11:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-05 11:31:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-05 11:31:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-05 11:31:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 11:31:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 11:31:49,665 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 11:31:49,665 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-05 11:31:49,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 11:31:49 BoogieIcfgContainer [2019-09-05 11:31:49,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 11:31:49,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 11:31:49,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 11:31:49,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 11:31:49,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 11:31:48" (1/3) ... [2019-09-05 11:31:49,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728ea5eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 11:31:49, skipping insertion in model container [2019-09-05 11:31:49,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:31:49" (2/3) ... [2019-09-05 11:31:49,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728ea5eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 11:31:49, skipping insertion in model container [2019-09-05 11:31:49,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 11:31:49" (3/3) ... [2019-09-05 11:31:49,675 INFO L109 eAbstractionObserver]: Analyzing ICFG vogal-2.i [2019-09-05 11:31:49,682 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 11:31:49,690 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 11:31:49,707 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 11:31:49,739 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-05 11:31:49,740 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 11:31:49,740 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-05 11:31:49,740 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 11:31:49,740 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 11:31:49,740 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 11:31:49,740 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 11:31:49,741 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 11:31:49,741 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 11:31:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-09-05 11:31:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-05 11:31:49,774 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:31:49,775 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:31:49,779 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:31:49,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:31:49,783 INFO L82 PathProgramCache]: Analyzing trace with hash 907546272, now seen corresponding path program 1 times [2019-09-05 11:31:49,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:31:49,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:31:49,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:49,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:49,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:31:49,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:31:49,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 11:31:49,939 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 11:31:49,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 11:31:49,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 11:31:49,954 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-09-05 11:31:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:31:49,982 INFO L93 Difference]: Finished difference Result 64 states and 91 transitions. [2019-09-05 11:31:49,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 11:31:49,984 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-05 11:31:49,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:31:49,993 INFO L225 Difference]: With dead ends: 64 [2019-09-05 11:31:49,993 INFO L226 Difference]: Without dead ends: 29 [2019-09-05 11:31:49,997 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 11:31:50,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-05 11:31:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-09-05 11:31:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-05 11:31:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2019-09-05 11:31:50,051 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 17 [2019-09-05 11:31:50,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:31:50,053 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2019-09-05 11:31:50,054 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 11:31:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2019-09-05 11:31:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-05 11:31:50,057 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:31:50,057 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:31:50,059 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:31:50,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:31:50,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1455815888, now seen corresponding path program 1 times [2019-09-05 11:31:50,061 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:31:50,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:31:50,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:50,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:50,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:31:50,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:31:50,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-05 11:31:50,250 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-05 11:31:50,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-05 11:31:50,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-05 11:31:50,253 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 3 states. [2019-09-05 11:31:50,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:31:50,372 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2019-09-05 11:31:50,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-05 11:31:50,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-09-05 11:31:50,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:31:50,378 INFO L225 Difference]: With dead ends: 65 [2019-09-05 11:31:50,378 INFO L226 Difference]: Without dead ends: 44 [2019-09-05 11:31:50,382 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-05 11:31:50,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-05 11:31:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2019-09-05 11:31:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-05 11:31:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-09-05 11:31:50,395 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 19 [2019-09-05 11:31:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:31:50,396 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-09-05 11:31:50,396 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-05 11:31:50,396 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-09-05 11:31:50,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-05 11:31:50,399 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:31:50,400 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:31:50,400 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:31:50,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:31:50,401 INFO L82 PathProgramCache]: Analyzing trace with hash -941161554, now seen corresponding path program 1 times [2019-09-05 11:31:50,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:31:50,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:31:50,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:50,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:50,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:31:50,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:31:50,563 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:31:50,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:50,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-05 11:31:50,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:31:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-05 11:31:50,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-05 11:31:50,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2019-09-05 11:31:50,706 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-05 11:31:50,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-05 11:31:50,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-05 11:31:50,707 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 8 states. [2019-09-05 11:31:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:31:50,997 INFO L93 Difference]: Finished difference Result 137 states and 188 transitions. [2019-09-05 11:31:50,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-05 11:31:50,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-09-05 11:31:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:31:51,000 INFO L225 Difference]: With dead ends: 137 [2019-09-05 11:31:51,000 INFO L226 Difference]: Without dead ends: 111 [2019-09-05 11:31:51,001 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-09-05 11:31:51,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-09-05 11:31:51,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 44. [2019-09-05 11:31:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-05 11:31:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2019-09-05 11:31:51,013 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 21 [2019-09-05 11:31:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:31:51,013 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2019-09-05 11:31:51,013 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-05 11:31:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2019-09-05 11:31:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-05 11:31:51,015 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:31:51,015 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:31:51,017 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:31:51,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:31:51,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2022961947, now seen corresponding path program 1 times [2019-09-05 11:31:51,018 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:31:51,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:31:51,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:51,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:51,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-05 11:31:51,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:31:51,211 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:31:51,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:51,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-05 11:31:51,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:31:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-05 11:31:51,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-05 11:31:51,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-09-05 11:31:51,306 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-05 11:31:51,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-05 11:31:51,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-05 11:31:51,308 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 7 states. [2019-09-05 11:31:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:31:51,497 INFO L93 Difference]: Finished difference Result 207 states and 284 transitions. [2019-09-05 11:31:51,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-05 11:31:51,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-09-05 11:31:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:31:51,500 INFO L225 Difference]: With dead ends: 207 [2019-09-05 11:31:51,500 INFO L226 Difference]: Without dead ends: 174 [2019-09-05 11:31:51,501 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-05 11:31:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-09-05 11:31:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 50. [2019-09-05 11:31:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-09-05 11:31:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2019-09-05 11:31:51,514 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 29 [2019-09-05 11:31:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:31:51,514 INFO L475 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2019-09-05 11:31:51,514 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-05 11:31:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2019-09-05 11:31:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-05 11:31:51,516 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:31:51,516 INFO L399 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, 1, 1, 1, 1, 1] [2019-09-05 11:31:51,516 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:31:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:31:51,516 INFO L82 PathProgramCache]: Analyzing trace with hash -38007360, now seen corresponding path program 1 times [2019-09-05 11:31:51,517 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:31:51,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:31:51,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:51,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:51,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-05 11:31:51,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:31:51,652 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-05 11:31:51,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:31:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:51,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-05 11:31:51,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:31:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-05 11:31:51,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:31:51,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-09-05 11:31:51,761 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-05 11:31:51,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-05 11:31:51,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-05 11:31:51,762 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand 8 states. [2019-09-05 11:31:52,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:31:52,187 INFO L93 Difference]: Finished difference Result 306 states and 453 transitions. [2019-09-05 11:31:52,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-05 11:31:52,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2019-09-05 11:31:52,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:31:52,191 INFO L225 Difference]: With dead ends: 306 [2019-09-05 11:31:52,191 INFO L226 Difference]: Without dead ends: 269 [2019-09-05 11:31:52,192 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-09-05 11:31:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-09-05 11:31:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 68. [2019-09-05 11:31:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-09-05 11:31:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2019-09-05 11:31:52,224 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 32 [2019-09-05 11:31:52,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:31:52,224 INFO L475 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2019-09-05 11:31:52,224 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-05 11:31:52,225 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2019-09-05 11:31:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-05 11:31:52,228 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:31:52,228 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:31:52,228 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:31:52,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:31:52,229 INFO L82 PathProgramCache]: Analyzing trace with hash -165054150, now seen corresponding path program 2 times [2019-09-05 11:31:52,229 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:31:52,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:31:52,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:52,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:52,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-05 11:31:52,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:31:52,410 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:31:52,431 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-05 11:31:52,474 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-05 11:31:52,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 11:31:52,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-05 11:31:52,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:31:52,517 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-05 11:31:52,521 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:31:52,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2019-09-05 11:31:52,522 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-05 11:31:52,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-05 11:31:52,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-05 11:31:52,523 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand 10 states. [2019-09-05 11:31:53,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:31:53,238 INFO L93 Difference]: Finished difference Result 445 states and 624 transitions. [2019-09-05 11:31:53,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-05 11:31:53,238 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-09-05 11:31:53,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:31:53,247 INFO L225 Difference]: With dead ends: 445 [2019-09-05 11:31:53,248 INFO L226 Difference]: Without dead ends: 392 [2019-09-05 11:31:53,249 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2019-09-05 11:31:53,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2019-09-05 11:31:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 82. [2019-09-05 11:31:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-09-05 11:31:53,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2019-09-05 11:31:53,264 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 37 [2019-09-05 11:31:53,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:31:53,264 INFO L475 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2019-09-05 11:31:53,265 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-05 11:31:53,265 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2019-09-05 11:31:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-05 11:31:53,266 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:31:53,266 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:31:53,266 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:31:53,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:31:53,267 INFO L82 PathProgramCache]: Analyzing trace with hash -978671484, now seen corresponding path program 3 times [2019-09-05 11:31:53,267 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:31:53,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:31:53,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:53,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 11:31:53,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-05 11:31:53,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:31:53,396 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-05 11:31:53,409 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:31:53,439 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-05 11:31:53,440 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 11:31:53,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-05 11:31:53,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:31:53,601 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-09-05 11:31:53,602 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:31:53,611 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-05 11:31:53,612 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:31:53,612 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-09-05 11:31:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-09-05 11:31:53,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:31:53,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2019-09-05 11:31:53,635 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-05 11:31:53,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-05 11:31:53,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-09-05 11:31:53,636 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand 15 states. [2019-09-05 11:31:54,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:31:54,228 INFO L93 Difference]: Finished difference Result 467 states and 621 transitions. [2019-09-05 11:31:54,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-05 11:31:54,229 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2019-09-05 11:31:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:31:54,231 INFO L225 Difference]: With dead ends: 467 [2019-09-05 11:31:54,232 INFO L226 Difference]: Without dead ends: 397 [2019-09-05 11:31:54,233 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2019-09-05 11:31:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2019-09-05 11:31:54,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 82. [2019-09-05 11:31:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-09-05 11:31:54,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2019-09-05 11:31:54,247 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 42 [2019-09-05 11:31:54,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:31:54,248 INFO L475 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2019-09-05 11:31:54,248 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-05 11:31:54,248 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2019-09-05 11:31:54,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-05 11:31:54,249 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:31:54,249 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:31:54,250 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:31:54,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:31:54,250 INFO L82 PathProgramCache]: Analyzing trace with hash -124017128, now seen corresponding path program 1 times [2019-09-05 11:31:54,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:31:54,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:31:54,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:54,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 11:31:54,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-05 11:31:54,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:31:54,375 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:31:54,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:54,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-05 11:31:54,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:31:54,538 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-09-05 11:31:54,538 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:31:54,540 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-05 11:31:54,540 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:31:54,541 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-09-05 11:31:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-09-05 11:31:54,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:31:54,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-09-05 11:31:54,565 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-05 11:31:54,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-05 11:31:54,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-09-05 11:31:54,567 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand 16 states. [2019-09-05 11:31:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:31:55,333 INFO L93 Difference]: Finished difference Result 514 states and 685 transitions. [2019-09-05 11:31:55,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-05 11:31:55,334 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2019-09-05 11:31:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:31:55,336 INFO L225 Difference]: With dead ends: 514 [2019-09-05 11:31:55,337 INFO L226 Difference]: Without dead ends: 451 [2019-09-05 11:31:55,338 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2019-09-05 11:31:55,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2019-09-05 11:31:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 86. [2019-09-05 11:31:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-09-05 11:31:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2019-09-05 11:31:55,352 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 45 [2019-09-05 11:31:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:31:55,352 INFO L475 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2019-09-05 11:31:55,352 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-05 11:31:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2019-09-05 11:31:55,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-09-05 11:31:55,354 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:31:55,354 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:31:55,354 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:31:55,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:31:55,354 INFO L82 PathProgramCache]: Analyzing trace with hash 767730701, now seen corresponding path program 1 times [2019-09-05 11:31:55,355 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:31:55,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:31:55,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:55,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:55,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-05 11:31:55,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:31:55,471 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:31:55,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:55,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-05 11:31:55,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:31:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-05 11:31:55,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:31:55,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2019-09-05 11:31:55,601 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-05 11:31:55,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-05 11:31:55,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-09-05 11:31:55,602 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand 14 states. [2019-09-05 11:31:57,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:31:57,444 INFO L93 Difference]: Finished difference Result 751 states and 1048 transitions. [2019-09-05 11:31:57,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-05 11:31:57,444 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2019-09-05 11:31:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:31:57,448 INFO L225 Difference]: With dead ends: 751 [2019-09-05 11:31:57,448 INFO L226 Difference]: Without dead ends: 686 [2019-09-05 11:31:57,450 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=216, Invalid=1854, Unknown=0, NotChecked=0, Total=2070 [2019-09-05 11:31:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2019-09-05 11:31:57,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 100. [2019-09-05 11:31:57,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-09-05 11:31:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2019-09-05 11:31:57,465 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 48 [2019-09-05 11:31:57,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:31:57,466 INFO L475 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2019-09-05 11:31:57,466 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-05 11:31:57,466 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2019-09-05 11:31:57,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-05 11:31:57,467 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:31:57,468 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:31:57,468 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:31:57,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:31:57,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1548703795, now seen corresponding path program 2 times [2019-09-05 11:31:57,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:31:57,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:31:57,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:57,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:31:57,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:31:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:31:57,612 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-05 11:31:57,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:31:57,613 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-05 11:31:57,634 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:31:57,675 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-05 11:31:57,675 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 11:31:57,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-05 11:31:57,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:31:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 74 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-05 11:31:57,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:31:57,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2019-09-05 11:31:57,783 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-05 11:31:57,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-05 11:31:57,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-09-05 11:31:57,783 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand 16 states. [2019-09-05 11:32:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:32:00,550 INFO L93 Difference]: Finished difference Result 958 states and 1330 transitions. [2019-09-05 11:32:00,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-09-05 11:32:00,550 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2019-09-05 11:32:00,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:32:00,557 INFO L225 Difference]: With dead ends: 958 [2019-09-05 11:32:00,557 INFO L226 Difference]: Without dead ends: 881 [2019-09-05 11:32:00,560 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=297, Invalid=3363, Unknown=0, NotChecked=0, Total=3660 [2019-09-05 11:32:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-09-05 11:32:00,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 114. [2019-09-05 11:32:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-09-05 11:32:00,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 142 transitions. [2019-09-05 11:32:00,579 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 142 transitions. Word has length 53 [2019-09-05 11:32:00,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:32:00,580 INFO L475 AbstractCegarLoop]: Abstraction has 114 states and 142 transitions. [2019-09-05 11:32:00,580 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-05 11:32:00,580 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 142 transitions. [2019-09-05 11:32:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-05 11:32:00,581 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:32:00,581 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:32:00,581 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:32:00,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:32:00,582 INFO L82 PathProgramCache]: Analyzing trace with hash 417827089, now seen corresponding path program 3 times [2019-09-05 11:32:00,582 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:32:00,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:32:00,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:00,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 11:32:00,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:32:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-09-05 11:32:00,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:32:00,766 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:32:00,792 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-05 11:32:00,829 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-05 11:32:00,829 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 11:32:00,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-05 11:32:00,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:32:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2019-09-05 11:32:01,002 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:32:01,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2019-09-05 11:32:01,003 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-05 11:32:01,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-05 11:32:01,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-09-05 11:32:01,004 INFO L87 Difference]: Start difference. First operand 114 states and 142 transitions. Second operand 19 states. [2019-09-05 11:32:02,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:32:02,792 INFO L93 Difference]: Finished difference Result 1437 states and 1917 transitions. [2019-09-05 11:32:02,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-05 11:32:02,792 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2019-09-05 11:32:02,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:32:02,799 INFO L225 Difference]: With dead ends: 1437 [2019-09-05 11:32:02,799 INFO L226 Difference]: Without dead ends: 1348 [2019-09-05 11:32:02,801 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2019-09-05 11:32:02,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2019-09-05 11:32:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 154. [2019-09-05 11:32:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-09-05 11:32:02,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 194 transitions. [2019-09-05 11:32:02,830 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 194 transitions. Word has length 58 [2019-09-05 11:32:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:32:02,830 INFO L475 AbstractCegarLoop]: Abstraction has 154 states and 194 transitions. [2019-09-05 11:32:02,830 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-05 11:32:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 194 transitions. [2019-09-05 11:32:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-05 11:32:02,831 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:32:02,832 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:32:02,832 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:32:02,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:32:02,832 INFO L82 PathProgramCache]: Analyzing trace with hash -583840968, now seen corresponding path program 4 times [2019-09-05 11:32:02,832 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:32:02,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:32:02,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:02,833 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 11:32:02,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:32:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-09-05 11:32:02,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:32:02,937 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-05 11:32:02,959 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:32:02,999 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-05 11:32:02,999 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 11:32:03,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-05 11:32:03,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:32:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 2 proven. 115 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-05 11:32:03,104 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:32:03,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 15 [2019-09-05 11:32:03,105 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-05 11:32:03,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-05 11:32:03,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2019-09-05 11:32:03,105 INFO L87 Difference]: Start difference. First operand 154 states and 194 transitions. Second operand 15 states. [2019-09-05 11:32:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:32:05,302 INFO L93 Difference]: Finished difference Result 846 states and 1161 transitions. [2019-09-05 11:32:05,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-05 11:32:05,302 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2019-09-05 11:32:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:32:05,306 INFO L225 Difference]: With dead ends: 846 [2019-09-05 11:32:05,306 INFO L226 Difference]: Without dead ends: 759 [2019-09-05 11:32:05,308 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=2337, Unknown=0, NotChecked=0, Total=2550 [2019-09-05 11:32:05,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-09-05 11:32:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 172. [2019-09-05 11:32:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-09-05 11:32:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 218 transitions. [2019-09-05 11:32:05,336 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 218 transitions. Word has length 62 [2019-09-05 11:32:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:32:05,337 INFO L475 AbstractCegarLoop]: Abstraction has 172 states and 218 transitions. [2019-09-05 11:32:05,337 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-05 11:32:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 218 transitions. [2019-09-05 11:32:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-05 11:32:05,339 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:32:05,339 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:32:05,339 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:32:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:32:05,339 INFO L82 PathProgramCache]: Analyzing trace with hash -308273692, now seen corresponding path program 5 times [2019-09-05 11:32:05,340 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:32:05,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:32:05,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:05,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 11:32:05,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:32:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-09-05 11:32:05,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:32:05,473 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-05 11:32:05,499 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:32:08,063 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-09-05 11:32:08,063 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 11:32:08,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-05 11:32:08,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:32:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-09-05 11:32:08,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:32:08,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-09-05 11:32:08,116 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-05 11:32:08,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-05 11:32:08,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-09-05 11:32:08,117 INFO L87 Difference]: Start difference. First operand 172 states and 218 transitions. Second operand 10 states. [2019-09-05 11:32:08,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:32:08,326 INFO L93 Difference]: Finished difference Result 301 states and 395 transitions. [2019-09-05 11:32:08,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-05 11:32:08,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2019-09-05 11:32:08,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:32:08,329 INFO L225 Difference]: With dead ends: 301 [2019-09-05 11:32:08,330 INFO L226 Difference]: Without dead ends: 202 [2019-09-05 11:32:08,331 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-09-05 11:32:08,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-09-05 11:32:08,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 190. [2019-09-05 11:32:08,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-09-05 11:32:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 242 transitions. [2019-09-05 11:32:08,359 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 242 transitions. Word has length 65 [2019-09-05 11:32:08,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:32:08,360 INFO L475 AbstractCegarLoop]: Abstraction has 190 states and 242 transitions. [2019-09-05 11:32:08,360 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-05 11:32:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 242 transitions. [2019-09-05 11:32:08,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-05 11:32:08,361 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:32:08,361 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:32:08,361 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:32:08,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:32:08,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1433942968, now seen corresponding path program 6 times [2019-09-05 11:32:08,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:32:08,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:32:08,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:08,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 11:32:08,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:32:08,551 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-09-05 11:32:08,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:32:08,551 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:32:08,579 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-05 11:32:08,625 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-09-05 11:32:08,625 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 11:32:08,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-05 11:32:08,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:32:08,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:08,935 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-05 11:32:08,936 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-05 11:32:08,937 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-09-05 11:32:08,937 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:08,946 INFO L567 ElimStorePlain]: treesize reduction 5, result has 64.3 percent of original size [2019-09-05 11:32:08,947 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:08,947 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:3 [2019-09-05 11:32:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-09-05 11:32:08,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-05 11:32:08,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2019-09-05 11:32:08,976 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-05 11:32:08,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-05 11:32:08,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-09-05 11:32:08,976 INFO L87 Difference]: Start difference. First operand 190 states and 242 transitions. Second operand 17 states. [2019-09-05 11:32:10,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:32:10,271 INFO L93 Difference]: Finished difference Result 447 states and 595 transitions. [2019-09-05 11:32:10,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-05 11:32:10,272 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 68 [2019-09-05 11:32:10,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:32:10,273 INFO L225 Difference]: With dead ends: 447 [2019-09-05 11:32:10,274 INFO L226 Difference]: Without dead ends: 333 [2019-09-05 11:32:10,274 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=192, Invalid=998, Unknown=0, NotChecked=0, Total=1190 [2019-09-05 11:32:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2019-09-05 11:32:10,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 209. [2019-09-05 11:32:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2019-09-05 11:32:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 267 transitions. [2019-09-05 11:32:10,307 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 267 transitions. Word has length 68 [2019-09-05 11:32:10,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:32:10,307 INFO L475 AbstractCegarLoop]: Abstraction has 209 states and 267 transitions. [2019-09-05 11:32:10,307 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-05 11:32:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 267 transitions. [2019-09-05 11:32:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-05 11:32:10,309 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:32:10,309 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:32:10,309 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:32:10,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:32:10,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1283842895, now seen corresponding path program 1 times [2019-09-05 11:32:10,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:32:10,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:32:10,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:10,310 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 11:32:10,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:32:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 2 proven. 92 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-09-05 11:32:10,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:32:10,511 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:32:10,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:32:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:32:10,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 38 conjunts are in the unsatisfiable core [2019-09-05 11:32:10,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:32:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 2 proven. 190 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-09-05 11:32:10,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:32:10,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 21 [2019-09-05 11:32:10,778 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-05 11:32:10,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-05 11:32:10,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2019-09-05 11:32:10,779 INFO L87 Difference]: Start difference. First operand 209 states and 267 transitions. Second operand 21 states. [2019-09-05 11:32:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:32:16,616 INFO L93 Difference]: Finished difference Result 1446 states and 1953 transitions. [2019-09-05 11:32:16,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2019-09-05 11:32:16,616 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 96 [2019-09-05 11:32:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:32:16,622 INFO L225 Difference]: With dead ends: 1446 [2019-09-05 11:32:16,622 INFO L226 Difference]: Without dead ends: 1317 [2019-09-05 11:32:16,626 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=453, Invalid=9849, Unknown=0, NotChecked=0, Total=10302 [2019-09-05 11:32:16,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2019-09-05 11:32:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 215. [2019-09-05 11:32:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2019-09-05 11:32:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 271 transitions. [2019-09-05 11:32:16,693 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 271 transitions. Word has length 96 [2019-09-05 11:32:16,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:32:16,693 INFO L475 AbstractCegarLoop]: Abstraction has 215 states and 271 transitions. [2019-09-05 11:32:16,693 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-05 11:32:16,693 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 271 transitions. [2019-09-05 11:32:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-05 11:32:16,694 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:32:16,695 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:32:16,695 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:32:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:32:16,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1439630739, now seen corresponding path program 2 times [2019-09-05 11:32:16,695 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:32:16,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:32:16,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:16,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:32:16,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:32:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-09-05 11:32:16,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:32:16,888 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-05 11:32:16,915 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:32:16,990 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-05 11:32:16,991 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 11:32:16,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-05 11:32:16,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:32:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 217 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-09-05 11:32:17,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:32:17,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22] total 23 [2019-09-05 11:32:17,240 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-05 11:32:17,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-05 11:32:17,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2019-09-05 11:32:17,241 INFO L87 Difference]: Start difference. First operand 215 states and 271 transitions. Second operand 23 states. [2019-09-05 11:32:24,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:32:24,747 INFO L93 Difference]: Finished difference Result 1574 states and 2102 transitions. [2019-09-05 11:32:24,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2019-09-05 11:32:24,747 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 99 [2019-09-05 11:32:24,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:32:24,753 INFO L225 Difference]: With dead ends: 1574 [2019-09-05 11:32:24,753 INFO L226 Difference]: Without dead ends: 1507 [2019-09-05 11:32:24,758 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4963 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=553, Invalid=14453, Unknown=0, NotChecked=0, Total=15006 [2019-09-05 11:32:24,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2019-09-05 11:32:24,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 221. [2019-09-05 11:32:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-09-05 11:32:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 279 transitions. [2019-09-05 11:32:24,805 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 279 transitions. Word has length 99 [2019-09-05 11:32:24,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:32:24,805 INFO L475 AbstractCegarLoop]: Abstraction has 221 states and 279 transitions. [2019-09-05 11:32:24,805 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-05 11:32:24,806 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 279 transitions. [2019-09-05 11:32:24,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-05 11:32:24,807 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:32:24,807 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:32:24,807 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:32:24,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:32:24,807 INFO L82 PathProgramCache]: Analyzing trace with hash -215472497, now seen corresponding path program 3 times [2019-09-05 11:32:24,807 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:32:24,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:32:24,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:24,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 11:32:24,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:32:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:32:25,257 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 37 [2019-09-05 11:32:25,722 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 50 [2019-09-05 11:32:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 75 proven. 57 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-09-05 11:32:25,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:32:25,888 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:32:25,900 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-05 11:32:26,423 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-09-05 11:32:26,423 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 11:32:26,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 72 conjunts are in the unsatisfiable core [2019-09-05 11:32:26,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:32:26,437 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-09-05 11:32:26,438 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,447 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-05 11:32:26,448 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,448 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2019-09-05 11:32:26,475 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:26,484 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:26,512 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-09-05 11:32:26,513 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,516 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-05 11:32:26,516 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,541 INFO L567 ElimStorePlain]: treesize reduction 10, result has 79.2 percent of original size [2019-09-05 11:32:26,542 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,542 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:107, output treesize:27 [2019-09-05 11:32:26,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:26,582 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-05 11:32:26,582 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,587 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:26,588 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-09-05 11:32:26,589 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,616 INFO L567 ElimStorePlain]: treesize reduction 10, result has 79.2 percent of original size [2019-09-05 11:32:26,616 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,617 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:107, output treesize:27 [2019-09-05 11:32:26,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:26,660 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-05 11:32:26,661 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,665 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:26,666 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-09-05 11:32:26,667 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,696 INFO L567 ElimStorePlain]: treesize reduction 10, result has 79.2 percent of original size [2019-09-05 11:32:26,696 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,696 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:107, output treesize:27 [2019-09-05 11:32:26,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:26,741 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:26,753 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-09-05 11:32:26,754 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,758 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-05 11:32:26,758 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,783 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-09-05 11:32:26,784 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,784 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-09-05 11:32:26,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:26,830 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:26,837 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-09-05 11:32:26,838 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,841 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-05 11:32:26,842 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,866 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-09-05 11:32:26,866 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,867 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-09-05 11:32:26,909 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:26,916 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:26,926 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-09-05 11:32:26,928 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,932 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-05 11:32:26,932 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,953 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-09-05 11:32:26,954 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:26,954 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-09-05 11:32:26,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:27,001 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:27,008 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-09-05 11:32:27,009 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,012 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-05 11:32:27,012 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,035 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-09-05 11:32:27,035 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,035 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-09-05 11:32:27,080 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:27,081 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-09-05 11:32:27,082 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,089 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-05 11:32:27,090 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,090 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:24 [2019-09-05 11:32:27,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:27,137 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:27,144 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2019-09-05 11:32:27,145 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,149 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:27,153 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 48 [2019-09-05 11:32:27,153 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,181 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-05 11:32:27,184 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,184 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:91, output treesize:24 [2019-09-05 11:32:27,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:27,191 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:27,200 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 48 [2019-09-05 11:32:27,201 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,205 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:27,211 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2019-09-05 11:32:27,212 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,249 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-05 11:32:27,253 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,253 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:91, output treesize:24 [2019-09-05 11:32:27,259 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:27,260 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-09-05 11:32:27,261 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,270 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-05 11:32:27,271 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,271 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-09-05 11:32:27,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:27,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:27,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:27,985 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-05 11:32:27,985 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,990 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-05 11:32:27,990 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:27,995 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:27,997 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-05 11:32:28,015 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-05 11:32:28,016 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 58 [2019-09-05 11:32:28,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:28,017 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:28,022 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-05 11:32:28,023 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-09-05 11:32:28,060 INFO L567 ElimStorePlain]: treesize reduction 10, result has 76.7 percent of original size [2019-09-05 11:32:28,061 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:32:28,061 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:363, output treesize:29 [2019-09-05 11:32:28,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:32:28,535 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2019-09-05 11:32:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 19 proven. 191 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-09-05 11:32:28,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:32:28,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 27] total 38 [2019-09-05 11:32:28,806 INFO L454 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-09-05 11:32:28,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-09-05 11:32:28,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1281, Unknown=0, NotChecked=0, Total=1406 [2019-09-05 11:32:28,808 INFO L87 Difference]: Start difference. First operand 221 states and 279 transitions. Second operand 38 states. [2019-09-05 11:32:30,618 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2019-09-05 11:32:31,067 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-05 11:32:32,163 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-05 11:32:32,770 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-05 11:32:33,184 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-05 11:32:35,606 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-05 11:32:35,800 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2019-09-05 11:32:36,063 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 58 [2019-09-05 11:32:36,286 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 52 [2019-09-05 11:32:36,498 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 52 [2019-09-05 11:32:36,719 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2019-09-05 11:32:37,492 WARN L188 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-05 11:32:37,868 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 55 [2019-09-05 11:32:38,285 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-05 11:32:38,778 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2019-09-05 11:32:39,790 WARN L188 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-05 11:32:40,037 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2019-09-05 11:32:40,490 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 62 [2019-09-05 11:32:40,976 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2019-09-05 11:32:41,219 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 58 [2019-09-05 11:32:42,286 WARN L188 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-05 11:32:42,716 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-05 11:32:43,078 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-05 11:32:45,523 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-05 11:32:46,413 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-05 11:32:46,780 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-05 11:32:47,133 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-05 11:32:48,055 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-05 11:32:51,542 WARN L188 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-05 11:32:51,893 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-05 11:32:52,288 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-05 11:32:52,823 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-05 11:32:53,240 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-05 11:32:53,864 WARN L188 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-05 11:32:54,169 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-05 11:32:54,508 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-05 11:32:57,629 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2019-09-05 11:32:57,800 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 38 [2019-09-05 11:32:58,045 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 55 [2019-09-05 11:32:58,231 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 48 [2019-09-05 11:32:58,436 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2019-09-05 11:32:58,645 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 45 [2019-09-05 11:32:59,439 WARN L188 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-05 11:33:00,374 WARN L188 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-05 11:33:00,920 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-05 11:33:01,373 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2019-09-05 11:33:01,594 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2019-09-05 11:33:02,054 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-05 11:33:02,307 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 50 [2019-09-05 11:33:03,204 WARN L188 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-05 11:33:03,612 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 59 [2019-09-05 11:33:04,061 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-09-05 11:33:04,309 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2019-09-05 11:33:06,153 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-05 11:33:06,753 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-05 11:33:07,404 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-05 11:33:08,762 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-05 11:33:09,630 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-05 11:33:11,873 WARN L188 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-05 11:33:12,265 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-05 11:33:12,816 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-05 11:33:13,527 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-05 11:33:15,352 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-05 11:33:18,820 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-05 11:33:19,388 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-05 11:33:22,094 WARN L188 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-05 11:33:23,400 WARN L188 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-05 11:33:23,885 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-05 11:33:24,458 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-05 11:33:25,313 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-05 11:33:33,826 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-05 11:33:40,260 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-05 11:33:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:33:40,269 INFO L93 Difference]: Finished difference Result 1667 states and 2193 transitions. [2019-09-05 11:33:40,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2019-09-05 11:33:40,270 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 102 [2019-09-05 11:33:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:33:40,276 INFO L225 Difference]: With dead ends: 1667 [2019-09-05 11:33:40,276 INFO L226 Difference]: Without dead ends: 1628 [2019-09-05 11:33:40,287 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27189 ImplicationChecksByTransitivity, 56.5s TimeCoverageRelationStatistics Valid=5235, Invalid=64723, Unknown=2, NotChecked=0, Total=69960 [2019-09-05 11:33:40,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2019-09-05 11:33:40,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 277. [2019-09-05 11:33:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-09-05 11:33:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 353 transitions. [2019-09-05 11:33:40,356 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 353 transitions. Word has length 102 [2019-09-05 11:33:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:33:40,356 INFO L475 AbstractCegarLoop]: Abstraction has 277 states and 353 transitions. [2019-09-05 11:33:40,356 INFO L476 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-09-05 11:33:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 353 transitions. [2019-09-05 11:33:40,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-05 11:33:40,358 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:33:40,358 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:33:40,358 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:33:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:33:40,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1369482703, now seen corresponding path program 1 times [2019-09-05 11:33:40,359 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:33:40,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:33:40,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:33:40,360 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 11:33:40,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:33:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:33:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-09-05 11:33:40,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:33:40,932 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-05 11:33:40,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:33:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:33:41,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 71 conjunts are in the unsatisfiable core [2019-09-05 11:33:41,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:33:41,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:33:41,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:33:41,858 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:33:43,009 WARN L188 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-05 11:34:05,777 WARN L188 SmtUtils]: Spent 22.60 s on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2019-09-05 11:34:06,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:34:06,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:34:06,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:34:06,836 INFO L392 ElimStorePlain]: Different costs {10=[v_prenex_14, |#memory_int|], 18=[v_prenex_10]} [2019-09-05 11:34:06,889 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-05 11:34:06,890 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 106 [2019-09-05 11:34:06,894 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-05 11:34:06,967 INFO L567 ElimStorePlain]: treesize reduction 136, result has 40.6 percent of original size [2019-09-05 11:34:07,020 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-05 11:34:07,021 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 112 [2019-09-05 11:34:07,022 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-05 11:34:07,060 INFO L567 ElimStorePlain]: treesize reduction 52, result has 35.8 percent of original size [2019-09-05 11:34:07,061 INFO L464 ElimStorePlain]: Eliminatee v_prenex_10 vanished before elimination [2019-09-05 11:34:07,067 INFO L496 ElimStorePlain]: Start of recursive call 1: 15 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-05 11:34:07,067 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 18 variables, input treesize:241, output treesize:3 [2019-09-05 11:34:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 76 proven. 231 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (17)] Exception during sending of exit command (exit): Stream closed [2019-09-05 11:34:07,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:34:07,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 30] total 50 [2019-09-05 11:34:07,186 INFO L454 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-09-05 11:34:07,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-09-05 11:34:07,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2303, Unknown=0, NotChecked=0, Total=2450 [2019-09-05 11:34:07,187 INFO L87 Difference]: Start difference. First operand 277 states and 353 transitions. Second operand 50 states. [2019-09-05 11:34:12,188 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-09-05 11:34:12,771 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-09-05 11:34:14,284 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-05 11:34:16,844 WARN L188 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2019-09-05 11:34:17,136 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-05 11:34:17,383 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-05 11:34:18,509 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-05 11:34:19,594 WARN L188 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-05 11:34:21,810 WARN L188 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-05 11:34:22,741 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-05 11:34:24,112 WARN L188 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-05 11:34:25,683 WARN L188 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:34:26,617 WARN L188 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:34:27,071 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:34:27,706 WARN L188 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:34:28,238 WARN L188 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:34:30,050 WARN L188 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:34:31,015 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:34:31,334 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:34:31,888 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:34:32,160 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:34:32,436 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:34:34,913 WARN L188 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:34:37,374 WARN L188 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:34:37,591 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:34:40,396 WARN L188 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:34:42,873 WARN L188 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:34:47,962 WARN L188 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:34:49,004 WARN L188 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:34:49,771 WARN L188 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:34:50,327 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:34:50,537 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:34:52,276 WARN L188 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:34:52,690 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:34:53,254 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-05 11:34:54,607 WARN L188 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-05 11:34:55,300 WARN L188 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-05 11:34:57,274 WARN L188 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-05 11:34:59,043 WARN L188 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-05 11:34:59,412 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-05 11:35:01,053 WARN L188 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-05 11:35:11,491 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2019-09-05 11:35:12,489 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:13,297 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:35:14,764 WARN L188 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:15,232 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:15,621 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:22,551 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:35:22,897 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:23,455 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:35:25,853 WARN L188 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:28,878 WARN L188 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:29,386 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:30,315 WARN L188 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:35:39,563 WARN L188 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:40,543 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:41,266 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:42,469 WARN L188 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:35:51,729 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:53,575 WARN L188 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:35:55,535 WARN L188 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:35:57,210 WARN L188 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:36:07,762 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:36:10,219 WARN L188 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:36:12,028 WARN L188 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:36:14,641 WARN L188 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:36:21,719 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-05 11:36:28,664 WARN L188 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2019-09-05 11:36:34,871 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-05 11:36:40,987 WARN L188 SmtUtils]: Spent 6.06 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2019-09-05 11:36:47,114 WARN L188 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:36:53,278 WARN L188 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:36:59,485 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-05 11:37:03,656 WARN L188 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-09-05 11:37:09,861 WARN L188 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2019-09-05 11:37:14,027 WARN L188 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:37:20,267 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-05 11:37:26,431 WARN L188 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:37:32,639 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-05 11:37:40,814 WARN L188 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:37:47,022 WARN L188 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-05 11:37:51,185 WARN L188 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:37:59,360 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-09-05 11:38:08,559 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:38:09,928 WARN L188 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-05 11:38:14,016 WARN L188 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:38:14,504 WARN L188 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:38:16,749 WARN L188 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2019-09-05 11:38:19,598 WARN L188 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-05 11:38:19,795 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-05 11:38:20,383 WARN L188 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-05 11:38:20,691 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-05 11:38:23,192 WARN L188 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-05 11:38:25,459 WARN L188 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-05 11:38:27,951 WARN L188 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:38:28,484 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:38:28,786 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:38:31,423 WARN L188 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-05 11:38:31,777 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:38:32,176 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:38:32,508 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:38:33,603 WARN L188 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-05 11:38:34,783 WARN L188 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-05 11:38:37,074 WARN L188 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:38:39,392 WARN L188 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:38:40,038 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-05 11:38:42,549 WARN L188 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:38:47,164 WARN L188 SmtUtils]: Spent 4.35 s on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:38:47,578 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:38:48,274 WARN L188 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-05 11:38:56,621 WARN L188 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-05 11:38:59,694 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:39:00,433 WARN L188 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:00,633 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:00,902 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:03,702 WARN L188 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:05,212 WARN L188 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:07,382 WARN L188 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:07,678 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:39:08,914 WARN L188 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:39:09,166 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:09,600 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:09,814 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:12,168 WARN L188 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:12,378 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:16,108 WARN L188 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-05 11:39:16,450 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:39:16,677 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:17,515 WARN L188 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:19,874 WARN L188 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:20,978 WARN L188 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:39:22,534 WARN L188 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:39:22,837 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:23,237 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:23,528 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:23,736 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:25,211 WARN L188 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:39:25,659 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:29,855 WARN L188 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:30,358 WARN L188 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:31,962 WARN L188 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:39:32,156 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:33,477 WARN L188 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:39:33,683 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:36,224 WARN L188 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:39:37,016 WARN L188 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:44,338 WARN L188 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-05 11:39:44,951 WARN L188 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:39:45,173 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:39:45,463 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:39:45,666 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:39:45,862 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:39:47,061 WARN L188 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:39:47,337 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:39:47,507 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:39:47,887 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-05 11:39:48,681 WARN L188 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:39:48,902 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:39:49,083 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:39:50,920 WARN L188 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:39:51,134 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:39:53,645 WARN L188 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:39:53,867 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:00,221 WARN L188 SmtUtils]: Spent 5.36 s on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-05 11:40:00,530 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:40:00,717 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:02,965 WARN L188 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:03,254 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:04,371 WARN L188 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:07,511 WARN L188 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:40:09,744 WARN L188 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-05 11:40:10,006 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:11,050 WARN L188 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:40:11,234 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:40:11,538 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:40:13,528 WARN L188 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:17,226 WARN L188 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-05 11:40:17,409 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:17,609 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:40:18,038 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:40:19,697 WARN L188 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:23,387 WARN L188 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-05 11:40:23,601 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:24,639 WARN L188 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:40:29,029 WARN L188 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:29,504 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-05 11:40:33,898 WARN L188 SmtUtils]: Spent 4.32 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:34,138 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:40:35,258 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-05 11:40:35,541 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:35,824 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:36,166 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:36,448 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:36,734 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:37,012 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:37,296 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:37,561 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-05 11:40:37,817 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-05 11:40:38,136 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-05 11:40:38,411 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:38,700 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:38,976 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:39,326 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:39,612 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:39,905 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:40,195 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:40,821 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-05 11:40:41,162 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-05 11:40:41,446 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-05 11:40:41,755 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:42,059 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:42,348 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:42,690 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:42,979 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-05 11:40:43,525 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-05 11:40:43,844 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-05 11:40:44,132 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:44,430 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:44,714 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:44,999 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:45,285 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:45,838 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-05 11:40:46,155 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-05 11:40:46,429 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:46,717 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:46,996 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:47,282 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:47,751 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-05 11:40:48,082 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-05 11:40:48,354 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:48,626 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-05 11:40:48,912 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:49,405 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-05 11:40:49,710 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-05 11:40:49,975 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:40:50,254 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-05 11:41:14,149 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-05 11:41:24,025 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-05 11:41:33,437 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-09-05 11:41:50,931 WARN L188 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2019-09-05 11:41:57,140 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-05 11:42:05,261 WARN L188 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2019-09-05 11:42:13,919 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:42:22,080 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:42:28,292 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-05 11:42:36,464 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-09-05 11:42:42,678 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2019-09-05 11:42:50,847 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:42:57,059 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-05 11:43:05,230 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:43:11,438 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-05 11:43:19,601 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:43:25,814 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-05 11:43:33,977 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-09-05 11:43:42,137 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-05 11:43:59,124 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2019-09-05 11:44:13,752 WARN L188 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-05 11:44:14,942 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-05 11:44:25,620 WARN L188 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:44:28,842 WARN L188 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:44:29,310 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:44:29,722 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-05 11:44:30,103 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-05 11:44:32,075 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-05 11:44:32,622 WARN L188 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:44:34,933 WARN L188 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:44:35,570 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-05 11:44:36,081 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:44:37,013 WARN L188 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:44:37,417 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-05 11:44:37,921 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-05 11:44:41,853 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2019-09-05 11:44:53,165 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-05 11:44:55,578 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2019-09-05 11:45:00,535 WARN L188 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-05 11:45:01,147 WARN L188 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:45:03,601 WARN L188 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:03,804 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:45:04,882 WARN L188 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:45:05,386 WARN L188 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:45:05,669 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:05,874 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:45:06,706 WARN L188 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-05 11:45:08,992 WARN L188 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:45:09,211 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:11,850 WARN L188 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:45:12,553 WARN L188 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:13,871 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:45:16,208 WARN L188 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:16,411 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:45:16,831 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:17,032 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:18,230 WARN L188 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:45:19,919 WARN L188 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-05 11:45:20,134 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:45:20,665 WARN L188 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:22,204 WARN L188 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:45:23,074 WARN L188 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:24,317 WARN L188 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-05 11:45:25,514 WARN L188 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-05 11:45:25,768 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:28,053 WARN L188 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:29,947 WARN L188 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-05 11:45:30,327 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:33,060 WARN L188 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:34,635 WARN L188 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-05 11:45:35,997 WARN L188 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-05 11:45:36,358 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-05 11:45:42,208 WARN L188 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2019-09-05 11:45:42,802 WARN L188 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:45:47,100 WARN L188 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-05 11:45:47,296 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-05 11:45:47,582 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51